The Kynix Components

The TMC2208 stepper motor drivers are a common choice for reducing stepper motor noise in 3D printers and laser cutters. They are particularly useful because they are an almost direct replacement for the already widely used A4988 stepper motor driver,  They have the same footprint and pinout, so they can be used to replace the A4988 driver without any major changes.CatalogI A4988 Stepper Driver Basics1.1 Specifications of A4988 Stepper Driver IC1.2 A4988 Stepper Driver PinoutsII TMC2208 Stepper Driver Basics2.1 Specifications of TMC2208 Stepper Driver IC2.2 TMC2208 Stepper Driver PinoutIII A4988 and TMC2208 Drive Module Replacement ProgramIV FAQI A4988 Stepper Driver BasicsThe A4988 driver is provided by Allegro (Worcester, Massachusetts, USA). Allegro mainly develops integrated circuit solutions for motor control, regulation and magnetic field sensing applications.1.1 Specifications of A4988 Stepper Driver ICMaximum subdivision 16Maximum output current 2A (requires a strong heat sink)The IC working voltage is 3.3 compatible with 5V, and the load driving voltage  is 5~35VSmall size (QFN28 (5x5) package)Low priceThe motor has large vibrations and obvious high-frequency noise1.2 A4988 Stepper Driver PinoutsPin NameDescriptionVDD & GNDConnected to 5V and GND of ControllerVMOT & GNDUsed to power the motor1A, 1B, 2A, 2BConnected to the 4 coils of motorDIRECTIONMotor Direction Control pinSTEPSteps Control PinMS1, MS2, MS3Microstep Selection PinsSLEEPPins For Controlling Power StatesRESET-ENABLE-II TMC2208 Stepper Driver BasicsThe TMC22xx series of stepper motor drivers are provided by TRINAMIC (Hamburg, Germany), which is mainly committed to the design and development of motion control products (stepping and DC brushless systems). The main products include chips, modules, and systems.The TMC22XX series drivers released by TRINAMIC are mainly used in FDM 3D printers TMC2208, TMC2224, and MC2100.2.1 Specifications of TMC2208 Stepper Driver ICHigh subdivision (full step 256 subdivision work)Low vibrationThe maximum output current is 1.2A (requires a strong heat sink)IC working voltage 5V, load driving voltage 5~36VSmall size (QFN28 (5x5) package)The price is slightly higher (retail at 10-15 yuan)It can eliminate most of the motor noise and vibration under low-speed operation and is mainly used in office areas, residential areas and other environments that require high noise standards.2.2 TMC2208 Stepper Driver PinoutPinFunction.Power SupplyGNDGroundVMMotor Supply Voltage (5.5-35V)VIOLogic Supply Voltage (3.3-5V).Motor OutputsM1AMotor Coil 1M1BMotor Coil 1M2AMotor Coil 2M2BMotor Coil 2.Control InputsSTEPStep-Signal InputDIRDirection-Signal InputENEnable Motor Outputs (GND=on, VIO=off).ConfigurationMS1Step-Configuration, pdMS2Step-Configuration, pdPDN_UARTUART and Auto Power Down Control (GND=on, VIO=off)DIAGDiagnostics Output (VIO=error)INDEXIndex Output (one pulse per each four fullsteps)VREFAnalog Reference VoltageIII A4988 and TMC2208 Drive Module Replacement Program A4988 & TMC2208 ModuleThe TMC2208 driver board program announced on the official website of TMC2208 can be fully compatible with the existing A4988 driver module. The MS1 and MS2 pins must be pulled up, and the TMC2208 driver can have 256 subdivision effects. (Note: The original A4988 drive work subdivision  must be 8 subdivision or 16 subdivision, that is, the MS1 and MS2 pins must be pulled up)TMC2208 driver 256 subdivision realization characteristics:There is no 16 subdivision calculation for the pulses 4988 and 2208 output by the main control MCU. The difference is that the driving current of 4988 to the stepper motor is a 16 subdivided waveform, the current waveform subdivided too low, and the theoretical sine wave is too far apart. Therefore, the motor-driven by 4988 exhibits excessive vibration and noise.Although the 2208 drive obtains the subdivided pulses of MCU16, the drive current waveform output to the motor through algorithm processing is subdivided by 256. The biggest advantage of this is that it reduces the burden on the main control MUC, but the power consumption and heat generation of the driver IC itself is increased.A4988 drives 16 subdivision current waveformsTMC2208 drives 256 subdivision current waveformsIV FAQWhat stepper motor driver is a common choice for reducing stepper motor noise in 3D printers and laser cutters?TMC2208 What are the TMC22XX series drivers mainly used in?FDM 3D printers What program can be fully compatible with the existing A4988 driver module?TMC2208 driver board program How many subdivision effects does the TMC2208 driver have?256 subdivision effects

CatalogFeaturesApplicationDescriptionsElectrical Ratings Electrical characteristicsElectrical characteristics (curves)Test circuitsPackage informationOrdering informationRevision historyTIP127 Datasheet TIP127 FAQ FeaturesLow collector-emitter saturation voltageComplementary NPN - PNP transistors ApplicationGeneral purpose linear and switchingu DescriptionsThe devices are manufactured in planar technology with "base island" layout andmonolithic Darlington configuration. The resulting transistors show exceptional highgain performance coupled with very |ow saturation voltage. Electrical RatingsTable 1. Absolute maximum ratingsSymbolParameterValueUnit NPNTIP120TIP121TIP122PNPTIP125 TIP127VCBOCollector-base voltage (IE = 0 A)6080100VVCEOCollector-emitter voltage (IB = 0 A)6080100VVEBOCollector-base voltage (IC = 0 A)5VICCollector current5AICMCollector peak current8AIBBase current0.12A Total power dissipation at TC ≤ 25°C65 PTOTTotal power dissipation at TA ≤ 25°C2WTstgStorage temperature range-65 to 150°CTJMaximum operating junction temperature150°CNote: For PNP types voltage and current values are negative.  Table 2. Thermal dataSymbolParameterValueUnitRthJCThermal resistance, junction-to-case1.92°C/WRthJAThermal resistance, junction-to-ambient62.5°C/W Electrical characteristicsTC = 25°C unless otherwise specified Table 3. Electrical characteristicsSymbolParameterTest conditionsMin.Typ.Max.Unit ICEO  Collector cut-off currentIB = 0 A, VCE = 30 V for TIP120/125 -0.5  mAIB = 0 A, VCE = 40 V for TIP121 -0.5IB = 0 A, VCE = 50 V for TIP122/127 -0.5 ICBO  Collector cut-off currentIB = 0 A, VCE = 60 V for TIP120/125 -0.2  mAIB = 0 A, VCE = 80 V for TIP121 -0.2IB = 0 A, VCE = 100 V for TIP122/127 -0.2IEBOEmitter cut-off currentIC = 0 A, VEB = 5 V -2mA VCEO(sus)  Collector-emitter sustaining voltageIB = 0 A, IC = 30 mA for TIP120/12560-   VIB = 0 A, IC = 30 mA for TIP12180- IB = 0 A, IC = 30 mA for TIP122/127100-  VCE(sat) Collector-emitter saturation voltageIC = 3 A, IB = 12 mA -2 VIC = 5 A IB = 20 mA -4VBE(on)Base-emitter on voltageIC = 3 A, VCE = 3 V -2.5V hFE DC current gainIC = 0.5 A, VCE = 3 V1000-  IC = 3 A, VCE = 3 V1000-  1. Pulsed: Pulse duration ≤ 300 μs, duty cycle ≤ 2%.Note: For PNP types voltage and current values are negative. Electrical characteristics (curves) Test circuits Figure 17. Resistive load switching for NPN type Note: (1) Fast electronic switch. Note: (2) Non-inductive resistor.  Figure 18. Resistive load switching for PNP typeNote: (1) Fast electronic switch. Note: (2) Non-inductive resistor. Package informationIn order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark.  TO-220 type H package information   Table 4. TO-220 type H package mechanical dataDim.mmMin.Typ.Max.A4.404.454.50A11.22 1.32A22.492.592.69A31.171.271.37b0.78 0.87b21.25 1.34b41.20 1.29b6  1.50b7  1.45c0.49 0.56D15.4015.5015.60D19.059.159.25E10.0810.1810.28e2.442.542.64e14.985.085.18H16.256.356.45L13.2013.4013.60L13.503.703.90L216.3016.4016.50L328.7028.9029.10∅P3.753.803.85Q2.702.802.90Slug flatness 0.030.10  Ordering informationTable 5. Order codesOrder codesMarkingPolarityPackagePackingTIP120TIP120 NPN   TO-220   TubeTIP121TIP121TIP122TIP122TIP125TIP125 PNPTIP127TIP127 Revision historyTable 6. Document revision historyDateVersionChanges21-Jun-20043Document migration, no content change.25-Nov-20084Inserted new Section 2.1: Electrical characteristics (curves).   11-May-2021   5The part number TIP126 have been removed and the document has been updated accordingly.Updated title and added STPOWER LOGO in cover page. Updated Section 4 Package information.Minor text changes. TIP127 DatasheetYou can download the datasheet of TIP127 from the link given below.TIP127-Datasheet TIP127 FAQWhat is a Darlington power transistor? In electronics, a multi-transistor configuration called the Darlington configuration (commonly called a Darlington pair) is a circuit consisting of two bipolar transistors with the emitter of one transistor connected to the base of the other. What are Darlington transistors used for?Darlington transistors are mainly used in switching and amplification applications for delivering a very high DC current gain. Some of the key applications are high and low side switches, sensor amplifiers and audio amplifiers. Is a Darlington transistor a Mosfet?I read that MOSFETS can handle more current safely at lower temps and with fewer areas of weakness. I understand that MOSFETs are essentially a pair of darlington transistors with resistors and diodes built into a package. 

I IntroductionThis blog mainly discusses the difference between LM324 and LM324A, and whether they can replace each other in the circuit. The difference between LM324 and other models like LM741, LM358, LM324N, etc. are also discussed in this blog.Figure 1. LM324CatalogI IntroductionII LM324AD and LM3242.1 Difference2.2 Parameters2.3 Can the Two Replace Each Other?III Difference Between LM324 and LM741, LM358IV Difference Between LM324 and LM318V Difference Between LM324 and LM324NVI Difference Between LM324 and LM324JFAQOrdering & QuantityII LM324AD and LM324LM324 is a four-operational amplifier, which is a large category. It includes two independent, high-gain, internal frequency-compensated operational amplifiers. LM324 is suitable for a single power supply with a wide range of power supply voltages and is also suitable for dual power supply operating mode. Under the recommended operating conditions, the power supply current is independent of the power supply voltage. According to the suffix of LM324, A seed model (specification) is included.The following will introduce to you the difference between lm324A and lm324, and whether they can be used interchangeably in the circuit.2.1 DifferenceThe accuracy index of LM324A is slightly higher than that of LM324. Take  TI's products as an example:Offset Voltage　　The input offset voltage of the LM324A is 2mV (typical) to 3mV (maximum);　　The input offset voltage of the LM324 is 3mV (typical) to 7mV (maximum).Offset Current　　The input offset current of the LM324A is 2nA (typical) to 30nA (maximum);　　The input offset current of the LM324 is 2nA (typical) to 50nA (maximum).Input Bias Current　　The input bias current of LM324A is -15nA (typical) ~ -100nA (maximum);　　The input bias current of LM324 is -20nA (typical)~-250nA (maximum).　　Figure 2. Parameters2.2 ParametersIn fact, whether it is the N series or the A series of the LM324, they belong to the sub-series of the LM324. Only individual parameters such as input offset voltage and input offset current are slightly different, and the other parameters are the same.　ParameterLM324ALM324ArchitectureBipolarBipolarCMRR (Typ) (dB)8080FeaturesStandard AmpsStandard AmpsGBW (Typ) (MHz)1.21.2Input bias current (Max) (pA)100000250000Iq per channel (Typ) (mA)0.1750.175Number of channels (#)44Offset drift (Typ) (uV/C)7-Operating temperature range (C)0 to 700 to 70Output current (Typ) (mA)4040Rail-to-railIn to V-In to V-RatingCatalogCatalogSlew rate (Typ) (V/us)0.50.5Total supply voltage (Max) (+5V=5, +/-5V=10)3232Total supply voltage (Min) (+5V=5, +/-5V=10)33Vn at 1 kHz (Typ) (nV/rtHz)3535Vos (offset voltage @ 25 C) (Max) (mV)372.3 Can the Two Replace Each Other?When discussing whether the two chips can be replaced with each other, we generally refer to the following situations:Same Function, Same PackageThe two are interchangeable. For example, as far as the commonly used chips LM741, LM324, LM339  are concerned, there are many manufacturers whose chip specifications are more or less the same, the package is the same, and the pin function is also the same.Same Function, Different PackageBoth can be replaced. However, the size and shape are different, so it can not be installed directly in the original position, such as dual in-line package and four-sided flat package.Different Function, Same PackageThe two cannot be interchanged. Because, the packaging is the product's external specifications. For example, the 74ls373 latch and 74ls374 flip-flop cannot be simply interchanged.Because the LM324 and LM324AD  have the same function, but different packages, they can be replaced. However, this is only limited to the simulation circuit. If it is the actual circuit, due to the different packaging, you originally expected that the soldering position may not reach the size, so you need to replace the circuit.　　　Figure 3. LM324AIII Difference Between LM324 and LM741, LM358These three types of op amps are all general purpose op amps, and their performance indicators are not very high. The specific differences are mainly reflected in the following aspects:Number of Channels　　LM741: single op amp;　　LM358: dual op amp;　　LM324: quad op amp.Working Voltage Range　　LM741: 7V~36V;　　LM358: 3V~32V;　　LM324: 3V~32V.Unity Gain Bandwidth　　LM741: 1MHz　　LM358: 700kHz　　LM324: 1MHzPrecision　　The input offset voltage of these three types of op amps are:　　LM741: 6mV (maximum);　　LM358: 7mV;　　LM324: 7mV.Input ImpedanceThe LM741  and LM358  are lower, and the input bias current is in the μA level, while the LM324 is 90nA, which is dozens of times higher than the previous two.　Figure 4. LM741IV Difference Between LM324 and LM318The LM324 is a general-purpose op amp (quad op amps). Its slew rate is 0.4V/us and the gain-bandwidth product is 1.3MHz, which is suitable for general use.LM318 is a high-speed operational amplifier (single op amp), its slew rate is 50V/us, and the gain-bandwidth product is 15MHz. Therefore, LM318  is suitable for amplifying signals with higher frequencies.　Figure 5. LM318V Difference Between LM324 and LM324NLM324 has the same function as LM324N,  The difference between the two is that the LM324 does not specify the package form, and the LM324N  package is a plastic dual in-line package.　　　Figure 6. LM324NP.S.N suffix refers to the packaging:N is DIPM is SOICMT is TSSOPJ is ceramic DIPVI Difference Between LM324 and LM324JLM324J is a DIP package of LM324 produced by NS, which is itself LM324. Another package form of LM324 produced by NS is LM324M, and the package is SO8. Since different manufacturers have different suffix standards, you need to see the datasheet given by the certain manufacturer.FAQWhat is lm324?LM324 is a Quad op-amp IC integrated with four op-amps powered by a common power supply. The differential input voltage range can be equal to that of power supply voltage. Generally, op-amps can perform mathematical operations.Which is the difference between lm324 and lm339?The LM324 has a complementary output while the LM339 is open collector. In the complementary output, current can flow in either direction as required (either source or sink) while the open collector output can only sink current.What is op amp use for?Operational amplifiers are linear devices that have all the properties required for nearly ideal DC amplification and are therefore used extensively in signal conditioning, filtering or to perform mathematical operations such as add, subtract, integration and differentiation.How does an op amp work?What is lm324 used for?LM324 IC ApplicationsThe applications of IC LM324 include the following. By using this IC, the conventional op-amp applications can be implemented very simply. This IC can be used as oscillators, rectifiers, amplifiers, comparators etc.What is LM324 suitable for? Single power supply with a wide range of power supply voltagesWhat is independent of the power supply voltage under the recommended operating conditions?Power supply currentWhat is the gain-bandwidth product of the LM324?1.3MHzWhat is the package of LM324M produced by NS?SO8Why do you need to see the datasheet given by the certain manufacturer?Different manufacturers have different suffix standards

CatalogFeaturesApplicationsInternal Schematic DiagramAbsolute Maximum RatingsThermal DataElectrical CharacteristicsTO-92 Mechanical DataTO-92 Ammopack Shipment (Suffix"-AP") Mechanical DataPN2222A DatasheetPN2222A FAQ  Features■ Silicon epitaxial planar NPN transistor■ TO-92 package suitable for through-hole PCB assembly■ The PNP complementary type is PN2907A Applications ■ Well suitable for TV and home appliance equipment■ Small load switch transistor with high gain and low saturation voltage Internal Schematic Diagram Absolute Maximum RatingsSymbolParameterValueUnitVCBOCollector-Emitter Voltage (IE = 0)75VVCEOCollector-Emitter Voltage (IB = 0)40VVEBOEmitter-Base Voltage (IC = 0)6VICCollector Current0.6AICM Collector Peak Current (tp < 5 ms)0.8APtotTotal Dissipation at Tamb = 25 ℃500mWTstgStorage Temperature-65 to 150℃TjMax. Operating Junction Temperature150℃ Thermal DataRthj-amb ·Thermal Resistance Junction-AmbientMax250℃/WRthj- case ·Thermal Resistance Junction-CaseMax83.3℃/W Electrical Characteristics Tcase = 25℃ unless otherwise specifiedSymbolParameterTest ConditionsMin.Typ.Max.UnitICEXCollector Cut-offCurrent (VBE = -3 V)VCE = 60 V  10nAIBEXBase Cut-off Current (VBE = -3 V)VCE = 60 V  20nAICBO Collector Cut-off Current (IE = 0) VCB = 75 V  10nAVCB = 75 V Tj = 150 oC  10μAIEBOEmitter Cut-off Current (IC = 0)VEB = 3 V  15nAV(BR)CEO*Collector-EmitterBreakdown Voltage(IB = 0)IC = 10 mA40  VV(BR)CBOCollector-BaseBreakdown Voltage(IE = 0)IC = 10 μA75  VV(BR)EBOEmitter-BaseBreakdown Voltage(IC = 0)IE = 10 μA6  VVCE(sat)*Collector-Emitter Saturation VoltageIC  = 150 mA IB = 15 mA  0.3VIC  = 500 mA IB = 50 mA  1VVBE(sat)*Collector-BaseSaturation VoltageIC  = 150 mA IB = 15 mA0.6 1.2VIC  = 500 mA IB = 50 mA  2VhFE*DC Current GainIC  = 0.1 mA   VCE = 10 V35   IC  = 1 mA    VCE = 10 V50   IC  = 10 mA   VCE = 10 V75   IC = 150 mA  VCE = 10 V100 300 IC = 150 mA  VCE = 1 V50   IC = 500 mA  VCE = 10 V40   fTTransition FrequencyIC = 20 mA  VCE = 20V  f = 100MHz 270 MHzCCBOCollector-Base CapacitanceIE = 0 VCB  = 10 V  f = 1 MHz 48pFCEBOEmitter-Base CapacitanceIC = 0 VEB = 0.5 V  f = 1MHz 2025pFNFNoise FigureIC = 0.1 mA  VCE = 10 V  f = 1 KHzDf = 200 Hz  RG = 1 KΩ 4 dBhie*Input ImpedanceVCE  =  10 V   IC  = 1 mA   f = 1 KHz2 8KΩVCE = 10 V  IC = 10 mA  f = 1 KHz0.25 1.25KΩhre*Reverse Voltage RatioVCE  =  10 V   IC  = 1 mA   f = 1 KHz   VCE = 10 V   IC = 10 mA   f = 1 KHz  8410-410-4hfe*Small Signal Current GainVCE  =  10 V   IC  = 1 mA   f = 1 KHz50 300 VCE = 10 V   IC = 10 mA   f = 1 KHz75 375 hoe*Output AdmittanceVCE  =  10 V   IC  = 1 mA   f = 1 KHz5 35μSVCE = 10 V   IC = 10 mA   f = 1 KHz25 200μStdDelay TimeIC  = 150 mA   IB = 15 mA VCC = 30 V 510nstrRise Time 1225nstsStorage TimeIC  = 150 mA   IB1 = - IB2 = 15 mA   VCC = 30 V 185225nstfFall Time 2460ns*Pulsed: Pulse duration = 300μs, duty cycle ≤ 2 % TO-92 Mechanical DataDIM. mminchMIN.TYP.MAX.MIN.TYP.MAX.A4.32 4.950.170 0.195b0.36 0.510.014 0.020D4.45 4.950.175 0.194E3.30 3.940.130 0.155e2.41 2.670.095 0.105e11.14 1.400.045 0.055L12.70 15.490.500 0.609R2.16 2.410.085 0.094S11.14 1.520.045 0.059W0.41 0.560.016 0.022V4 degree 6 degree4 degree 6 degree  TO-92 Ammopack Shipment (Suffix"-AP") Mechanical DataDIM. mminchMIN.TYP.MAX.MIN.TYP.MAX.A1  4.80  0.189T  3.80  0.150T1  1.60  0.063T2  2.30  0.091d  0.48  0.019P012.5012.7012.900.4920.5000.508P25.656.357.050.2220.2500.278F1,F22.442.542.940.0960.1000.116delta H-2.00 2.00-0.079 0.079W17.5018.0019.000.6890.7090.748W05.706.006.300.2240.2360.248W18.509.009.250.3350.3540.364W2  0.50  0.020H18.50 20.500.728 0.807H015.5016.0016.500.6100.6300.650H1  25.00  0.984D03.804.004.200.1500.1570.165t  0.90  0.035L  11.00  0.433I13.00  0.118  delta P-1.00 1.00-0.039 0.039  PN2222A DatasheetYou can download the datasheet of PN2222A from the link given below:PN2222A Datasheet PN2222A FAQWhat is NPN transistor and its working?NPN transistors are a type of bipolar transistor with three layers that are used for signal amplification. It is a device that is controlled by the current. A negative-positive-negative transistor is denoted by the abbreviation NPN. In an NPN transistor, the flow of electrons is what causes it to conduct. Why is NPN transistor used?NPN transistors are used in amplifying circuit applications. NPN transistors are used in the Darlington pair circuits for amplifying weak signals. NPN transistors are used in applications we need sinking current. NPN transistors are used in some classic amplifier circuits, the same as 'push-pull' amplifier circuits. What does a NPN transistor made of?A bipolar junction transistor is made up of three pieces of silicon. Depending on what is added to the silicon, it will be either N-type or P-type. An NPN transistor has a piece of P-type silicon (the base) sandwiched between two pieces of N-type (the collector and emitter). Is NPN faster than PNP?A npn transistor has electrons as majority charge carriers whereas the pnp transistor has holes as majority charge carrier. The mobility of electrons is better than mobility of holes. So a npn transistor is faster in operation than a pnp transistor. Why NPN transistor is preferred over PNP?The majority charge carriers in an NPN transistor are electrons and the majority carriers in a PNP transistor are holes. The electrons have better mobility than holes. Therefore, NPN transistors are preferred over PNP transistors. 

This post contains details about IRF740 and  IRF640 pinout, equivalent, uses, features and other important information about how and where to use this MOSFET device. CatalogMOSFET Explained / DescriptionCAD ModelPinout : IRFf640 vs IRF740Replacement and EquivalentFeatures / Technical Specifications : IRF640 vs IRF740Applications : IRF640 vs IRF740Where We Can Use it & How to Use: IRF640 vs IRF740How to Safely Long Run in a Circuit: IRF640 vs IRF740Circuits: IRF640 vs IRF740Product Attributes : IRF740 vs IRF 640 Product DatasheetFAQ  MOSFET Explained / DescriptionIRF740 is a high voltage N channel MOSFET, the transistor is basically designed for high voltage and high speed switching applications. The max load voltage this transistor can drive is up to 400V with a maximum load current of 10A. The maximum current in pulse mode is 40A and the on-resistance or (RDS) is 0.55 ohms.The max drain to source voltage of 400V makes it ideal to drive a variety of high voltage loads in electronic circuits. IRF640 is an N Channel MOSFET designed for high speed switching purposes. This high speed switching capability can be very useful in applications where switching speed is crucial, for example in a UPS circuit or in any other application where a user wants to change the load input power from one source to another.The transistor is capable of driving a load of up to 18A and the voltage can be upto 200V with the minimum saturation voltage of only 2V to 4v at its gate. The pulsed drain current is 72A means this MOSFET can drive a load of upto 72A in short intervals or when the load is not continuously connected and only connected for a 300us (Microseconds) time period with the duty cycle of 1.5%.How To Test a MOSFET Transistor Using a Multimeter CAD Model  Symbol   Footprint  2D Model Pinout : IRFf640 vs IRF740 no difference in  pinout  Replacement and Equivalent IRF740  :   2SK1400A, BUK457-400B, BUZ61A, IRF740S, MTP10N40E, RFP7N35, RFP7NA40 IRF640 :  YTA640, IRF641, IRF642, IRFB4620, IRFB5620, 2SK740, STP19NB20, YTA640, BUK455-200A, BUK456-200A, BUK456-200B, BUZ30A, MTP20N20E, RFP15N15, 2SK891, 18N25, 18N40, 22N20  Features / Technical Specifications : IRF640 vs IRF740IRF640IRF740Package Type: TO-220Package Type: TO-220 And Other PackagesTransistor Type: N ChannelTransistor Type: N ChannelMax Voltage Applied From Drain to Source: 400VMax Voltage Applied From Drain to Source: 200VMax Gate to Source Voltage Should Be: ±20VMax Gate to Source Voltage Should Be: ±20VMax Continues Drain Current is : 10AMax Continues Drain Current is : 18AMax Pulsed Drain Current is: 40AMax Pulsed Drain Current is: 72AMax Power Dissipation is: 125WMax Power Dissipation is: 125WMinimum Voltage Required to Conduct: 2V to 4VMinimum Voltage Required to Conduct: 2V to 4VMax Storage & Operating temperature Should Be: -55 to +150 CentigradeMax Storage & Operating temperature Should Be: -55 to +150 Centigrade Applications : IRF640 vs IRF740IRF740IRF640Applications that requires fast switchingBattery Chargers and BMSHigh voltage applicationsSolar Power Supply ApplicationsMotor DriversApplications That Requires Fast SwitchingDC Motor drivers and controllers applicationsMotor DriversUPSupsBattery charger circuits Lighting and ballast circuits  Where We Can Use it & How to Use: IRF640 vs IRF740IRF640 can be used in circuits where switching speed important for example in battery backup systems, uninterruptable power supplies, etc. and it will also perform well in general-purpose switching applications. Other than that it can also be used in building blocks of audio amplifiers.  IRF740 can be used in circuits in which you want to drive a voltage load of upto 400V with 10A load current. Also, the high speed switching capability makes it suitable in applications where the user requires switching from one source to another in nanoseconds.The 400V load capability makes it suitable to use in a variety of high voltage applications such as uninterrupted power supplies, LED and other light ballasts, etc.Moreover, this transistor can also be used in audio amplifier circuit stages and also as a separate audio amplifier. How to Safely Long Run in a Circuit: IRF640 vs IRF740 IRF640For long term performance, we always suggest using all components at least 20% below its maximum ratings and the same goes with IRF640. The max drain current is 18A therefore do not drive a load of more than 14.4A. The maximum load voltage is 200V and to stay under the safe side do not drive load of more than 160V. The maximum pulsed drain current is 72A so the max pulsed load should not exceed 57.6A. Use a proper heat sink with the transistor and always store or operate the device at temperature above -55 degree centigrade and below +150 degree centigrade. IRF740For long life performance of a component it’s important to not use a component on its maximum ratings and always use it at least 20% below from its max ratings, therefore same goes with IRF740 MOSFET.  The maximum continuous drain current is 10A therefore do not drive a load of more than 8A. The max drain to source voltage is 400V thus do not drive load of more than 320V. Where ever in operation use a suitable heatsink with the transistor and always store and operate this transistor in temperature above -55 degree Celsius and below +150 Celsius. Circuits: IRF640 vs IRF740 power mosfet IRF740 as a switch circuit ( switch 300 volts DC and 5amp) Product Attributes : IRF740 vs IRF 640TYPEDESCRIPTION IRF740DESCRIPTION IFR640CategoryDiscrete Semiconductor ProductsDiscrete Semiconductor Products Transistors - FETs, MOSFETs - SingleTransistors - FETs, MOSFETs - SingleMfrSTMicroelectronicsSTMicroelectronicsSeriesPowerMESH™ IIMESH OVERLAY™PackageTubeTubePart StatusObsoleteObsoleteFET TypeN-ChannelN-ChannelTechnologyMOSFET (Metal Oxide)MOSFET (Metal Oxide)Drain to Source Voltage (Vdss)400 V200 VCurrent - Continuous Drain (Id) @ 25°C10A (Tc)18A (Tc)Drive Voltage (Max Rds On, Min Rds On)10V10VRds On (Max) @ Id, Vgs550mOhm @ 5.3A, 10V180mOhm @ 9A, 10VVgs(th) (Max) @ Id4V @ 250µA4V @ 250µAGate Charge (Qg) (Max) @ Vgs43 nC @ 10 V72 nC @ 10 VVgs (Max)±20V±20VInput Capacitance (Ciss) (Max) @ Vds1400 pF @ 25 V1560 pF @ 25 VFET Feature--Power Dissipation (Max)125W (Tc)125W (Tc)Operating Temperature-65°C ~ 150°C (TJ)150°C (TJ)Mounting TypeThrough HoleThrough HoleSupplier Device PackageTO-220TO-220Package / CaseTO-220-3TO-220-3Base Product NumberIRF740IRF640  Product Datasheet IRF740 DatasheetIRF640 Datasheet  FAQWhat is IRF740?The IRF740 is an N-Channel Power MOSFET which can switch loads upto 400V. The Mosfet could switch loads that consume upto 10A, it can turned on by provide a gate threshold voltage of 10V across the Gate and Source pin. ... Hence this mosfet cannot be used in applications where high switching efficiency is required. What is IRF640?IRF640 is an N Channel MOSFET designed for high speed switching purposes. This high speed switching capability can be very useful in application where switching speed is crucial, for example in a UPS circuit or in any other application where use wants to change the load input power from one source to another. What are MOSFET transistors used for?The purpose of a MOSFET transistor is essentially to control voltage/current flow between the source and the drain.2 What are power MOSFETs used for?Power MOSFETs (Metal-Oxide Semiconductor Field Effect Transistors) are three-terminal silicon devices that function by applying a signal to the gate that controls current conduction between source and drain. What is an N-channel Mosfet?N-Channel MOSFET is a type of metal oxide semiconductor field-effect transistor that is categorized under the field-effect transistors (FET). ... This type of transistor is also known as an insulated-gate field-effect transistor (IGFET). Sometimes it is also known as a metal-insulator field-effect transistor (MIFET). What is the maximum load voltage of the IRF740 transistor? 400V What type of MOSFET is IRF640? N Channel MOSFET What type of applications does IRF640 perform well in? General-purpose switching applications What can IRF640 be used as a separate audio amplifier? Audio amplifier circuit stages What percentage of IRF640 components are below its maximum ratings? 20%

Product OverviewThe SX1276 transceivers feature the LoRa® long-range modem that provides ultra-long-range spread spectrum communication and high interference immunity while minimizing current consumption. Using Semtech’s patented LoRa modulation technique, SX1276 can achieve a sensitivity of over -148 dBm using a low-cost crystal and bill of materials. The high sensitivity combined with the integrated +20 dBm power amplifier yields industry-leading link budget, making it optimal for any application requiring range or robustness. LoRa also provides significant advantages in both blocking and selectivity over conventional modulation techniques, solving the traditional design compromise between range, interference immunity, and energy consumption. These devices also support high-performance (G)FSK modes for systems including WMBus, IEEE802.15.4g. The SX1276 delivers exceptional phase noise, selectivity, receiver linearity, and IIP3 for significantly-lower current consumption than competing devices. Video: LoRa SX1278/76 Arduino Interfacing Tutorial | Sending Sensor Data Wirelessly with LoRa CatalogProduct OverviewSX1276 FeaturesSX1276 PinoutSX1276 ApplicationsSX1276 Block DiagramSX1276 Circuit DiagramSX1276 SpecificationSX1276 vs SX1272SX1276 ManufacturerSX1276 DatasheetUsing WarningsSX1276 FAQ SX1276 Features168 dB maximum link budget+20 dBm - 100 mW constant RF output versus V supply+14 dBm high-efficiency PAProgrammable bit rate up to 300 kbpsHigh sensitivity: down to -146.5 dBmBullet-proof front-end: IIP3 = -12 dBm100 dB blocking immunityLow RX current of 10 mA, 200 nA register retentionFully-integrated synthesizer with a resolution of 61 HzFSK, GFSK,  MSK,  GMSK, LoRa, and OOK modulationsBuilt-in bit synchronizer for clock recoverySync word recognitionPreamble detection115 dB+ Dynamic Range RSSIAutomatic RF Sense with ultra-fast AFCPacket engine up to 64 bytes with CRCBuilt-in temperature sensor and low-battery indicator SX1276 PinoutThe following diagram shows the pin arrangement of the QFN package, top view. SX1276 Pinout SX1276 ApplicationsAutomated Meter Reading.Home and Building Automation.Wireless Alarm and Security Systems.Industrial Monitoring and ControlLong range Irrigation Systems SX1276 Block DiagramThe following figure shows the block diagram of SX1276. SX1276 Block Diagram SX1276 Circuit DiagramThe following is the circuit diagram of SX1276. SX1276 Circuit Diagram SX1276 SpecificationTypes           SX1276Product Number      LoRa1276-C1Working Frequency      868/915 MHzTransmit Power         20 dBmEmission Current         120mAReceiving Sensitivity-123dBm~139dBm Receiving Current         10.8mATransmission Distance          5 kmAnti-interference Ability         Strong SX1276 vs SX1272SpecificationsSX1276SX1272Frequency bands of operation169 MHz, 433 MHz, 850 MHz to 1 GHz850 MHz to 1 GHzProgrammable Bandwidth7.8 KHz, 10.4 KHz, 15.6 KHz, 20.8 KHz, 31.2 KHz, 41.7 KHz, 62.5 KHz. 125 KHz, 250 KHz, 500 KHz125 KHz , 250 KHz, 500 KHzReceiver SensitivityBetter than SX1272, (down up to -148 dBm)Good (down up to -137dBm)Max. Link Budget168 dB157 dBIIP3-11 dBm-12.5 dBmRx current9.9 mA, 200nA register retention10 mA, 100nA register retentionModulation types supportedSame as SX1272GFSK, FSK, MSK, GMSK, LoRa邃｢ as well as OOK.Dynamic Range (RSSI)127 dB127 dBTemperature sensor and low battery indicationYESYESpacket engine size256 bytes256 bytesBlocking ImmunityExcellent89 dBBit SynchronizerYESYESPreamble detectionYESYES SX1276 ManufacturerSemtech Corporation is a leading supplier of high performance analog and mixed-signal semiconductors and advanced algorithms for high-end consumer, enterprise computing, communications, and industrial equipment. Products are designed to benefit the engineering community as well as the global community. The Company is dedicated to reducing the impact it, and its products, have on the environment. Internal green programs seek to reduce waste through material and manufacturing control, use of green technology and designing for resource reduction. SX1276 DatasheetYou can download this datasheet for SX1276 Datasheet from the link given below:SX1276 Datasheet Using WarningsNote: Please check their parameters and pin configuration before replacing them in your circuit. SX1276 FAQWhat is the modem of the Semtech sx1276 transceiver?The SX1276/77/78/79 transceivers feature the LoRaTM long range modem that provides ultra-long range spread spectrum communication and high interference immunity whilst minimising current consumption. What is a transceiver used for?The transceiver is an important part of a fiber optics network and is used to convert electrical signals to optical (light) signals and optical signals to electrical signals. It can be plugged into or embedded into another device within a data network that can send and receive a signal. What are the characteristics of transceiver?In radio communication, a transceiver is an electronic device which is a combination of a radio transmitter and a receiver, hence the name. It can both transmit and receive radio waves using an antenna, for communication purposes. What is the maximum sensitivity of the SX1276 transceivers?+20 dBm What does LoRa support for systems such as WMBus?High-performance (G)FSK modes