Microchip LC170A

DESCRIPTION

This hermetically sealed Transient Voltage Suppressor (TVS) product family includes a rectifier diode element in series and opposite direction to achieve low capacitance performance below 100 pF (see Figure 2). The low level of TVS capacitance may be used for protecting higher frequency applications in inductive switching environments or electrical systems involving secondary lightning effects per IEC61000-4-5 as well as RTCA/DO-160D or ARINC 429 for airborne avionics. With virtually instantaneous response, they also protect from ESD and EFT per IEC61000-4-2 and IEC61000-4-4.

FEATURES

• Unidirectional low-capacitance TVS series for flexible
thru-hole mounting (for bidirectional see Figure 4)
• Suppresses transients up to 1500 watts @ 10/1000 µs
(see Figure 1)*
• Clamps transient in less than 100 pico seconds
• Working voltage (VWM) range 6.5 V to 170 V
• Hermetic sealed DO-13 metal package
• Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, JANTXV, and JANS are also
available by adding MQ, MX, MV, MSP prefixes
respectively to part numbers, e.g. MXLC6.5A, etc.
• Surface mount equivalent packages also available as
SMCJLCE6.5 - SMCJLCE170A or SMCGLCE6.5 -
SMCGLCE170A in separate data sheet (consult factory
for other surface mount options)
• Plastic axial-leaded equivalents available in the LCE6.5
- LCE170A series in separate data sheet
• RoHS Compliant devices available by adding “e3” suffix

APPLICATIONS / BENEFITS

• Protection from switching transients and induced RF
• Low capacitance for data line protection up to 1 MHz
• Protection for aircraft fast data rate lines up to Level 5
Waveform 4 and Level 2 Waveform 5A in RTCA/DO-
160D (also see MicroNote 130) & ARINC 429 with bit
rates of 100 kb/s (per ARINC 429, Part 1, par 2.4.1.1)
• ESD & EFT protection per IEC 61000-4-2 and -4-4
• Secondary lightning protection per IEC61000-4-5 with
42 Ohms source impedance:
Class 1: LC6.5 to LC170A
Class 2: LC6.5 to LC150A
Class 3: LC6.5 to LC70A
Class 4: LC6.5 to LC36A
• Secondary lightning protection per IEC61000-4-5 with
12 Ohms source impedance:
Class 1 : LC6.5 to LC90A
Class 2: LC6.5 to LC45 A
Class 3: LC6.5 to LC22A
Class 4: LC6.5 to LC11A
• Secondary lightning protection per IEC61000-4-5 with
2 Ohms source impedance:
Class 2: LC6.5 to LC20A
Class 3: LC6.5 to LC10A
• Inherently radiation hard per Microsemi MicroNote 050