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SMAJ

Transient Voltage Suppressor

The SMAJ is a transient voltage suppressor from Littelfuse. View the full SMAJ datasheet below including key specifications.

Manufacturer

Littelfuse

Category

Transient Voltage Suppressor

Package

DO-214AC/SMA

Key Specifications

ParameterValue
Clamping Voltage38.9V
Operating Temperature-65℃~+150℃ °C
Peak Pulse Current (Ipp)10.3A
Peak Pulse Power Dissipation (Ppp)400W@10/1000us
PolarityUnidirectional
Reverse Leakage Current (Ir)1uA
Reverse Stand-Off Voltage (Vrwm)24V
typeTVS
Voltage - Breakdown29.5V

Overview

Part: SMAJ5.0 thru SMAJ188CA, Vishay

Type: Surface Mount TRANSZORB ® Transient Voltage Suppressor

Description: A low profile, surface mount transient voltage suppressor series with 400 W peak pulse power capability (300 W above 78 V) for 10/1000 μs waveform, available in unidirectional and bidirectional configurations, with stand-off voltages from 5.0 V to 188 V.

Operating Conditions:

  • Stand-off voltage (VWM): 5.0 V to 188 V
  • Operating junction and storage temperature: -55 to +150 °C
  • Peak pulse power capability: 400 W (300 W above 78 V) with a 10/1000 μs waveform

Absolute Maximum Ratings:

  • Peak pulse power dissipation (PPM): 400 W (10/1000 μs waveform)
  • Peak forward surge current (IFSM): 40 A (8.3 ms single half sine-wave, uni-directional only)
  • Max junction and storage temperature: +150 °C

Key Specs:

  • Stand-off voltage (VWM): 5.0 V to 188 V
  • Peak pulse power dissipation (PPM): 400 W (10/1000 μs waveform, TA = 25 °C)
  • Peak forward surge current (IFSM): 40 A (8.3 ms single half sine-wave, uni-directional only, TA = 25 °C)
  • Breakdown voltage (VBR) for SMAJ5.0A: 6.40 V (min) to 7.07 V (max) at IT = 10 mA
  • Maximum reverse leakage (ID) for SMAJ5.0A: 800 μA at VWM = 5.0 V
  • Maximum peak pulse surge current (IPPM) for SMAJ5.0A: 43.5 A
  • Maximum clamping voltage (VC) for SMAJ5.0A: 9.2 V at IPPM
  • Typical thermal resistance, junction to ambient (RθJA): 120 °C/W

Features:

  • Low profile package
  • Ideal for automated placement
  • Glass passivated chip junction
  • Available in Unidirectional and Bidirectional
  • Excellent clamping capability
  • Very fast response time
  • Low incremental surge resistance
  • Meets MSL level 1, per J-STD-020C, LF max peak of 260 °C
  • Solder Dip 260 °C, 40 seconds
  • Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC

Applications:

  • Sensitive electronics protection against voltage transients induced by inductive load switching and lighting on ICs, MOSFET, signal lines of sensor units for consumer, computer, industrial, automotive and telecommunication.

Package:

  • DO-214AC (SMA)

Features

  • Low profile package
  • Ideal for automated placement
  • Glass passivated chip junction
  • Available in Unidirectional and Bidirectional
  • 400 W peak pulse power capability with a 10/1000 μs waveform, repetitive rate (duty cycle): 0.01 % (300 W above 78 V)
  • Excellent clamping capability
  • Very fast response time
  • Low incremental surge resistance
  • Meets MSL level 1, per J-STD-020C, LF max peak of 260 °C
  • Solder Dip 260 °C, 40 seconds
  • Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC

Applications

Use in sensitive electronics protection against voltage transients induced by inductive load switching and lighting on ICs, MOSFET, signal lines of sensor units for consumer, computer, industrial, automotive and telecommunication.

Typical Application

Use in sensitive electronics protection against voltage transients induced by inductive load switching and lighting on ICs, MOSFET, signal lines of sensor units for consumer, computer, industrial, automotive and telecommunication.

Package Information

Case:

DO-214AC (SMA)

Epoxy meets UL 94V-0 flammability rating

Terminals: Matte tin plated leads, solderable per J-STD-002B and JESD22-B102D

E3 suffix for commercial grade, HE3 suffix for high reliability grade (AEC Q101 qualified)

Polarity:

Color band denotes cathode end

MAXIMUM RATINGS (T A = 25 °C unless otherwise noted)MAXIMUM RATINGS (T A = 25 °C unless otherwise noted)MAXIMUM RATINGS (T A = 25 °C unless otherwise noted)MAXIMUM RATINGS (T A = 25 °C unless otherwise noted)
PARAMETERSYMBOLVALUEUNIT
Peak pulse power dissipation with a 10/1000 μs waveform (1,2) (see Fig. 1)P PPM400W
Peak pulse current with a waveform (1)I PPMsee next tableA
Peak forward surge current 8.3 ms single half sine-wave uni-directional only (2)I FSM40A
Operating junction and storage temperature rangeT J , T STG- 55 to + 150°C

(1) Non-repetitive current pulse, per Fig. 3 and derated above T A = 25 °C per Fig. 2. Rating is 300 W above 78 V

(2) Mounted on 0.2 x 0.2" (5.0 x 5.0 mm) copper pads to each terminal

DO-214AC (SMA)

DO-214AC (SMA)

MAJORRATINGSAND CHARACTERISTICSMAJORRATINGSAND CHARACTERISTICS
V WM5.0 V to 188 V
P PPM400 W, 300W
I FSM40 A
T j max.150 °C

Related Variants

The following components are covered by the same datasheet.

Part NumberManufacturerPackage
SMAJ12A-E3/61Vishay SemiconductorsDO-214AC, SMA
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