SMAJ Series
Transient Voltage Suppressors
Working Voltage: 5.0 to 440 V
Peak Pulse Power: 400 W
SMA/ DO-214AC
Features
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Glass passivated chip
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400 W peak pulse power capability with a
10/1000 ȝs waveform, repetitive rate (duty
cycle):0.01 %
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Low leakage
Uni and Bidirectional unit
Excellent clamping capability
Very fast response time
RoHS compliant
Mechanical Data
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Case: Molded plastic
Epoxy: UL 94V-0 rate flame retardant
Lead: Solderable per MIL-STD-750, method
2026
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Polarity: Color band denotes cathode end
except Bipolar
Mounting position: Any
Maximum Ratings(TA=25ɗ unless otherwise noted)
Value
400
UNIT
W
Parameter
Symbol
Peak power dissipation with a 10/1000ȝs waveform(1)
PPP
Peak pulse current wih a 10/1000ȝs waveform(1)
Power dissipation on infinite heatsink at TL = 75 °C
Peak forward surge current, 8.3 ms single half sine-
IPP
PD
See Next Table
1.0
A
W
IFSM
40
A
wave unidirectional only(2)
Maximum instantaneous forward voltage at 25 A for
unidirectional only(3)
VF
3.5/5.0
V
Operating junction and storage temperature range
TJ, TSTG
–55 to +150
°C
Note:
(1)Non-repetitive current pulse per Fig.5 and derated above TA= 25 °C per Fig.1
(2)Measured on 8.3 ms single half sine-wave or equivalent square wave, duty cycle = 4 pulses per minute maximum
(3)VF<3.5V for devices of VBR<200V and VF<5.0V for devices of VBR>201V
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Revision:20170301-P1