Surface Mount Transient Voltage Suppressors (TVS)

ROHS

4.0SMF Series

3.3 To 48V 400W

Revision March 1,2022

www.unsemi.com.tw

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

Specifications are subject to change without notice.

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

4/5

Soldering Parameters

Dimensions

Dimensions

Min

Max

Max

Min

Inches

Millimeters

A

B

C

D

E

F

G

0.031

0.100

0.055

0.140

0.037

0.010

-

0.044

0.112

0.071

0.152

0.053

-

0.008

0.77

2.51

1.38

3.51

0.93

0.26

-

1.09

2.81

1.85

3.82

1.33

-

0.20

SOD-123

Cathode Band

Time

Time to peak temperature

( T25℃ to peak)

Preheat

Ts(min)

Ts(max)

TL

TL

TP

Ramp-up

Ramp-down

Critical Zone

TL toTP

TP

Ts

25

Lead–free assembly

150°C

200°C

60 -180 Seconds

3°C/Second max

3°C/Second max

217°C

60 -150 Seconds

260 +0/-5°C

20-40 Seconds

6°C/Second Max

8 minutes Max

280°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