Transient Voltage Suppressor
SMAJ SERIES
Description
SMAJ Series transient voltage suppressors are excellent ervoltage
protective devices.
The Series is designed specifically to protect sensitive electronic
quipment from voltage transients induced by lightning and other
transient voltage events.
SMA (DO-214AC)
Features
Mechanical Characteristics
Excellent clamping capability
Low leakage current
High surge capability
Glass passivated chip
Epoxy resin package
Built-in strain relief
Will not fatigue
RoHS Compliant
Fast response time:
typically less than 1.0ps from 0 Volts to VBR min
Package: SMA plastic package.
Lead Finish: Matte Tin
Case Material: Epoxy Molding Compound.
UL Flammability Classification Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020
Applications
Telecom
Computer
Industrial electronic
Consumer electronic
Electrical Parameters
Parameter
+I
Definition
CJ
Junction Capacitance - typical capacitance measured
with 0V or VR bias
IPP
Peak Pulse Current - maximum rated peak impulse
current
VC
Clamping Voltage - Peak voltage measured across the
suppressor at a specified Ippm (peak impulse current)
VBR
Breakdown Voltage - Maximum voltage that flows
though the TVS at a specified test current (IT)
IR
Leakage Current - maximum peak off-state current
measured at VR
VR
Peak Off-state Voltage - maximum voltage that can be
applied while maintaining off state
www.pdwsemi.com
1 -7
VF
Ipp
Uni
Bi
IT
IR
VR
VBR
VC
+V
© 2022 PDW, Inc.
Specifications are subject to change without notice.
Revised: 2022/04/08
Transient Voltage Suppressor
SMAJ SERIES
Absolute Maximum Ratings (TA=25℃ unless otherwise noted)
Parameter
Symbol
Value
Units
Remarks
PPPM
400
W
(Note1)(Note2)
Steady State Power Dissipation
PD
3.3
W
(Note3)
Peak Forward Surge Current
IFSM
40
A
(Note4)
Maximum Instantaneous Forward Voltage at 20A
VFM
3.5/6.5
V
(Note5)
Typical Thermal Resistance Junction to Lead
RθJL
30
℃/W
Typical Thermal Resistance Junction to Ambient
RθJA
120
℃/W
TJ
-55 to 150
℃
TSTG
-55 to 150
℃
Peak Pulse Power Dissipation
Operating Temperature Range
Storage Temperature Range
Notes1: Non-repetitive current pulse , 10/1000us Waveform.
Notes2: Mounted on copper pad area of 5×5mm to each terminal.
Notes3: Infinite HeatSink at TL=50°C
Notes4: Measured on 8.3m s single half sine wave or equivalent square wave, duty cycle=4 per minute maximum.
Notes5: For UnidirectionalOnly, VFM
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