Surface Mount Transient Voltage Suppressors (TVS)
The SMAJ series is designed specifically to protect sensitive electronic
equipment from voltage transients induced by lightning and other transient
5.0 To 440 V
For surface mounted applications in order to optimize board space
Uni and Bidirectional unit
Glass passivated junction
Excellent clamping capability
400W Peak power capability at 10
1000µs waveform Repetition rate
Fast response time: typically less than 1.0ps from 0 Volts to V
less than 5μA above 12V
High Temperature soldering: 260°C/40 seconds at terminals
Typical maximum temperature coefficient
Plastic package has Underwriters Laboratory Flammability 94V-0
Matte tin lead–free Plated
Halogen free and RoHS compliant
Typical failure mode is short from over-specified voltage or current
Whisker test is conducted based on JEDEC JESD201A per its table
4a and 4c
IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact)
ESD protection of data lines in accordance with IEC 61000-4-2
EFT protection of data lines in accordance with IEC 61000-4-4
TVS devices are ideal for the protection of I/O interfaces, V
bus and other vulnerable circuits used in Telecom, Computer,
Industrial and Consumer electronic applications.
=25℃ unless otherwise noted)
See Next Table
-55 to +150
Peak Pulse Power Dissipation with a 10/1000µs waveform (Fig.1)(Note
1), (Note 2)
Peak Pulse Current with a 10/1000µs waveform.(Note1,Fig.3)
Power Dissipation on Infinite Heat Sink at T
Peak Forward Surge Current, 8.3ms Single Half Sine Wave (Note 3)
Maximum Instantaneous Forward Voltage at 25A for Unidirectional Only
Operating junction and Storage Temperature Range.
1. Non-repetitive current pulse, per Fig. 3 and derated above T
= 25°C per Fig. 2.
2. Mounted on 5.0mm x 5.0mm (0.03mm thick) Copper Pads to each terminal.
3. 8.3ms single half sine-wave, or equivalent square wave, Duty cycle = 4 pulses per minutes maximum.
< 3.5V for V
< 200V and V
< 6.5V for V
UN Semiconductor Co., Ltd.
October 18, 2013
@ UN Semiconductor Co., Ltd. 2013
Specifications are subject to change without notice.
Please refer to www.unsemi.com.tw for current information.
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