Datasheet

December 2007 Rev 2 1/10
10
SMM4F
High junction temperature Transil™
Features
■ Typical peak pulse power:
– 400 W (10/1000 µs)
– 2.4 kW (8/20 µs)
■ Stand off voltage range: from 5 V to 33 V
■ Unidirectional types
■ Low leakage current:
– 0.2 µA at 25 °C
– 1 µA at 85 °C
■ Operating T
j
max: 175 °C
■ JEDEC registered package outline
■ RoHS package
■ Halogen free molding compound
Complies with the following standards
■ IEC 61000-4-2 level 4:
– 15 kV (air discharge)
– 8 kV (contact discharge)
■ MIL STD 883G-Method 3015-7: class3
– 25 kV (human body model)
Description
The SMM4F Transil series has been designed to
protect sensitive equipment against electro-static
discharges according to IEC 61000-4-2, MIL STD
883 Method 3015, and electrical over stress such
as IEC 61000-4-4 and 5. They are generally for
surges below 400 W 10/1000 µs.
This planar technology makes it compatible with
high-end equipment and SMPS where low
leakage current and high junction temperature are
required to provide reliability and stability over
time. Their low clamping voltages provide a better
safety margin to protect sensitive circuits with
extended life time expectancy.
Packaged in STmite flat, this minimizes PCB
space consumption (footprint in accordance with
IPC 7531 standard).
TM: Transil is a trademark of STMicroelectronics
K
A
STmite flat
(DO222-AA)
www.st.com