Surface Mount Transient Voltage Suppressors

Revision March 1,2022

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For technical questions, contact: tech@unsemi.com.tw

ROHS

Specifications are subject to change without notice.

Please refer to www.unsemi.com.tw for current information.

3/5

SMCJS Series

15 To 43V 4600W

Load dump ratings are tested on PRIMA ISO7637-P5a

Soldering Parameters

试验脉冲

5a

0

UA

U

Us

Td

Tr

T

0.9Us

0.1Us

SYSTEM

TEST

LEVEL

Us(V)

Td （ ms ） Ri （Ω ）

NUMBER OF

PULSE

12V

Ⅳ

87

100

2

10 pulse

24V

Ⅳ

150

100

8

10 pulse

pd-Lead–free assembly

150°C

200°C

60 -180 Seconds

3°C/second max

5°C/second max

217°C

60 -150 Seconds

260 +0/-5°C

30 Seconds Max

6°C/second max

8 minutes Max

260°C

Reflow Condition

Pre Heat

-Temperature Min (Ts(min))

-Temperature Max (Ts(max))

- Time (min to max) (TS)

Average ramp up rate ( Liquidus

Temp TL) to peak

TS(max) to TL - Ramp-up Rate

Reflow

- Temperature (TL) (Liquidus)

- Time (min to max) (TS)

Peak Temperature (TP)

Do not exceed

Time 25°C to peak Temperature (TP)

Time within 5°C of actual peak

Temperature (TP)

Ramp-down Rate

Ramp up

TS(MAX)

TS(MIN)

Ramp down

Time

TP

TL

25

Critical Zone

TL to TP

TL

Time 25℃ to peak

Ts

Preheat

Tp