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SMBJ51CA

Transient Voltage Suppressor

The SMBJ51CA is a transient voltage suppressor from Littelfuse. View the full SMBJ51CA datasheet below including key specifications, absolute maximum ratings.

Official SMBJ51CA datasheet (PDF) — the source this page was extracted from.

Manufacturer

Littelfuse

Category

Diodes

Package

DO-214AA

Lifecycle

Production (Last Updated: 8 months ago)

SMBJ51CA Key Specifications

ParameterValue
Breakdown Voltage59.7 V
Case/PackageSMB
China RoHSNon-Compliant
Clamping Voltage82.4 V
CompositionZener
DirectionBidirectional
Element ConfigurationSingle
Height2.237 mm
Introduction Date1996-01-01
Lead FreeLead Free
Leakage Current1 µA
Length4.57 mm
Lifecycle StatusProduction (Last Updated: 8 months ago)
Max Breakdown Voltage62.7 V
Max Operating Temperature150 °C
Max Power Dissipation5 W
Max Reverse Leakage Current1 µA
Max Surge Current7.3 A
Min Breakdown Voltage56.7 V
Min Operating Temperature-65 °C
MountSurface Mount
Number of Bidirectional Channels1
Number of Channels1
Number of Elements1
Number of Pins2
Number of Terminals2
Operating Supply Voltage51 V
PackagingCut Tape
Peak Pulse Current7.3 A
Peak Pulse Power 600 W
Peak Reverse Current1 µA
PolarityBidirectional
Power Dissipation600 W
Power Line ProtectionNo
Power Rating600 W
REACH SVHCAffected
Reverse Breakdown Voltage56.7 V
Reverse Standoff Voltage51 V
Reverse Voltage51 V
RoHSCompliant
Schedule B8541100080, 8541100080|8541100080|8541100080|8541100080|8541100080
TerminationSMD/SMT
Test Current1 mA
Voltage Rating (DC)51 V
Width3.94 mm

SMBJ51CA Overview

Part: SMBJ51CA

Type: Bidirectional Transient Voltage Suppressor (TVS) Diode

Description: 600 W surface-mount bidirectional TVS diode with a 51 V reverse standoff voltage, 82.4 V maximum clamping voltage, and DO-214AA (SMB) package.

Operating Conditions:

  • Operating temperature: -65 to 150 °C
  • Reverse standoff voltage: 51.0 V

Absolute Maximum Ratings:

  • Peak pulse power dissipation (10/1000 μs): 600 W
  • Power dissipation on infinite heat sink (TL = 50 °C): 5.0 W
  • Max junction/storage temperature: 175 °C

Key Specs:

  • Reverse standoff voltage (VR): 51.0 V
  • Breakdown voltage minimum (VBR @ 1 mA): 56.70 V
  • Breakdown voltage maximum (VBR @ 1 mA): 62.70 V
  • Maximum clamping voltage (VC @ IPP = 7.3 A): 82.4 V
  • Maximum peak pulse current (IPP): 7.3 A
  • Maximum reverse leakage current (IR @ VR): 1 μA
  • Maximum temperature coefficient of VBR: 0.101 %/°C
  • Peak pulse power dissipation (10/1000 μs waveform): 600 W

Features:

  • Excellent clamping capability
  • Low incremental surge resistance
  • Fast response time: typically less than 1.0 ps from 0 V to VBR min
  • IEC-61000-4-2 ESD 30 kV (Air), 30 kV (Contact) protection
  • EFT protection of data lines in accordance with IEC 61000-4-4
  • Built-in strain relief
  • UL Recognized compound meeting flammability classification V-0
  • Halogen free and RoHS compliant

Applications:

  • Protection of I/O interfaces
  • VCC bus protection
  • Telecom, computer, industrial, and consumer electronic applications

Package:

  • DO-214AA (SMB J-Bend)

SMBJ51CA Features

  • Excellent clamping capability
  • Low incremental surge resistance
  • T ypical I R less than 1μA when V BR min>12V
  • For surface mounted applications to optimize board space
  • Low profile package
  • T ypical 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 30kV(Air), 30kV (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
  • Built-in strain relief
  • Fast response time: typically less than 1 .0ps from 0V to VBR min

SMBJ51CA Applications

TVS components are ideal for the protection of I/O Interfaces, V CC bus and other vulnerable circuits used in Telecom, Computer, Industrial and Consumer electronic applications.

  • 600W peak pulse power capability at 10/1000μs waveform, repetition rate (duty cycles):0.01%
  • High temperature to reflow soldering guaranteed: 260°C/30sec
  • V BR @ T J = V BR @25°C x (1+ α T x (T J - 25)) ( α T:Temperature Coefficient, typical value is 0.1%)
  • UL Recognized compound meeting flammability classification V-0
  • Meet MSL level1, per J-STD-020, LF maximun peak of 260°C
  • Matte tin lead-free plated
  • Halogen free and RoHS compliant
  • Pb-free E3 means 2nd level interconnect is Pbfree and the terminal finish material is tin(Sn) (IPC/ JEDEC J-STD-609A.01)
  • UL Recognized to ANSI/ UL 497B: Protectors for Data Communications and Fire-Alarm Circuits.

SMBJ51CA Absolute Maximum Ratings

ParameterSymbolValueUnit
Peak Pulse Power Dissipation(Fig.2) by 10/1000usTest Waveform(Fig.4) (Note 1),(Note 2)-Single Die PartsP PPM600W
Peak Pulse Power Dissipation(Fig.2) by 10/1000usTest Waveform(Fig.4) (Note 1), (Note 2)-Stacked Die Parts (Note 5)P PPM800W
Power Dissipation on Infinite Heat Sink at T L =50 O CP D5.0W
Peak Forward Surge Current, 8.3ms Single Half SineWave (Note 3)I FSM100A
Maximum Instantaneous Forward Voltage at 50A for Unidirectional Only (Note 4)V F3.5/5.0V
OperatingTemperature RangeT J-65 to 150°C
StorageTemperature RangeT STG-65 to 175°C
TypicalThermal Resistance Junction to LeadR Ɵ JL20°C/W
TypicalThermal Resistance Junction to AmbientR Ɵ JA100°C/W

SMBJ51CA Thermal Information

ParameterSymbolValueUnit
Peak Pulse Power Dissipation(Fig.2) by 10/1000usTest Waveform(Fig.4) (Note 1),(Note 2)-Single Die PartsP PPM600W
Peak Pulse Power Dissipation(Fig.2) by 10/1000usTest Waveform(Fig.4) (Note 1), (Note 2)-Stacked Die Parts (Note 5)P PPM800W
Power Dissipation on Infinite Heat Sink at T L =50 O CP D5.0W
Peak Forward Surge Current, 8.3ms Single Half SineWave (Note 3)I FSM100A
Maximum Instantaneous Forward Voltage at 50A for Unidirectional Only (Note 4)V F3.5/5.0V
OperatingTemperature RangeT J-65 to 150°C
StorageTemperature RangeT STG-65 to 175°C
TypicalThermal Resistance Junction to LeadR Ɵ JL20°C/W
TypicalThermal Resistance Junction to AmbientR Ɵ JA100°C/W

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
SMBJ51ABournsDO-214AA

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  • CH213K – WCH, Low Dropout Ideal Diode Chip
  • ESD5Z2.5T1G – onsemi, ESD Protection TVS Diode
  • PMEG4010CEJ – Nexperia, Schottky Barrier Rectifier
  • USBLC6-2SC6 – STMicroelectronics, ESD Protection Device

All Diodes datasheetsAll Littelfuse datasheets (70)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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