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SMF26A

Unidirectional TVS Diode

The SMF26A is a unidirectional tvs diode from Littelfuse. View the full SMF26A datasheet below including key specifications, absolute maximum ratings.

SMF26A shares its datasheet with SMF20A, whose page lists every part number it covers.

Official SMF26A datasheet (PDF) — the source this page was extracted from.

Manufacturer

Littelfuse

Category

Diodes

Package

SOD-123FL

Lifecycle

Production (Last Updated: 5 months ago)

SMF26A Key Specifications

ParameterValue
Breakdown Voltage30.4 V
Clamping Voltage42.1 V
CompositionZener
Lead FreeLead Free
Lifecycle StatusProduction (Last Updated: 5 months ago)
Max Breakdown Voltage31.9 V
Max Operating Temperature150 °C
Max Power Dissipation1 W
Max Reverse Leakage Current1 µA
Max Surge Current4.8 A
Min Breakdown Voltage28.9 V
Min Operating Temperature-65 °C
MountSurface Mount
Number of Channels1
Number of Elements1
Number of Terminals2
Number of Unidirectional Channels1
PackagingCut Tape
Peak Pulse Current4.8 A
Peak Pulse Power 1 kW
Peak Reverse Current1 µA
PolarityUnidirectional
Power Line ProtectionNo
REACH SVHCNo
Reverse Standoff Voltage26 V
Reverse Voltage26 V
RoHSCompliant
Schedule B8541100080
TerminationSMD/SMT
Test Current1 mA

SMF26A Overview

Part: SMF20A Type: TVS Diode

Description: The SMF series is designed to protect sensitive electronic equipment from voltage transients, offering 200W peak pulse power capability at 10/1000μs waveform in a low-profile SOD-123FL package.

Operating Conditions:

  • Operating temperature: -65 to 150 °C

Absolute Maximum Ratings:

  • Peak Pulse Power Dissipation (8/20μs): 1000 W
  • Peak Pulse Power Dissipation (10/1000μs): 200 W
  • Power Dissipation On Infinite Heat Sink: 1 W
  • Max storage temperature: -65 to 175 °C

Key Specs:

  • Breakdown Voltage VBR (min): 22.20 V (at IT=1 mA)
  • Breakdown Voltage VBR (max): 24.50 V (at IT=1 mA)
  • Reverse Standoff Voltage VR: 20 V
  • Reverse Leakage Current IR: 1.0 μA (at VR=20V)
  • Peak Pulse Current Ipp: 6.2 A (10/1000μs)
  • Clamping Voltage VC: 32.4 V (at Ipp=6.2A, 10/1000μs)
  • Fast response time: typically less than 1.0ns from 0 Volts to VBR min

Features:

  • 200W peak pulse power capability at 10/1000μs waveform
  • Compatible with industrial standard package SOD-123FL
  • Low profile: maximum height of 1.1mm
  • Low inductance, excellent clamping capability
  • For surface mounted applications to optimize board space
  • High temperature to reflow soldering guaranteed: 260°C/430sec
  • 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
  • Glass passivated junction
  • Built-in strain relief
  • Plastic package is flammability rated V-0 per UL 94
  • Meet MSL level1, per J-STD-020, LF maximun peak of 260°C
  • Matte tin lead-free plated
  • Halogen-free and RoHS compliant
  • UL Recognized to UL 497B as an Isolated Loop Circuit Protector

Applications:

  • I/O interfaces
  • VCC bus
  • Cellular phones
  • Portable devices
  • Business machines
  • Power supplies
  • Other consumer applications

Package:

  • SOD-123FL (2.90-3.10 mm length, 3.40-3.90 mm width, 0.90-1.08 mm height for SMF110ASMF250A / SMF5.0CASMF85CA)

SMF26A Features

  • 200W peak pulsepower capability at 10/1000μs waveform, repetition rate (duty cycle): 0.01%
  • ·Compatible with industrial standard package SOD-123FL
  • Low profile: maximum height of 1.1mm.
  • Low inductance, excellent clamping capability
  • For surface mounted applications to optimize board space
  • High temperature to reflow soldering guaranteed: 260°C/430sec
  • 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

SMF26A Applications

SMF devices are ideal for the protection of I/O interfaces, V CC bus and other vulnerable circuit used in cellular phones, portable devices, business machines, power supplies and other consumer applications.

  • EFT protection of data lines in accordance with IEC 61000-4-4
  • Fast response time: typically less than 1 .0ns from 0 Volts to V BR min
  • Glass passivated junction
  • Built-in strain relief
  • Plastic package is flammability rated V-0 per UL 94
  • 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 Pb-free and the terminal finish material is tin(Sn) (IPC/ JEDEC J-STD609A.01)
  • UL Recognized to UL 497B as an Isolated Loop Circuit Protector.

SMF26A Absolute Maximum Ratings

ParameterParameterSymbolValueUnit
Peak Pulse Power Dissipation atT A =25°C (Note 1)8/20μsP PPM1000W
Peak Pulse Power Dissipation atT A =25°C (Note 1)10/1000μs (Note 2)P PPM200W
Power Dissipation On Infinite Heat Sink at TL=50°CPower Dissipation On Infinite Heat Sink at TL=50°CP D1W
Thermal Resistance Junction- to- AmbientThermal Resistance Junction- to- AmbientR Ɵ JA220°C/W
Thermal Resistance Junction- to- LeadThermal Resistance Junction- to- LeadR Ɵ JL100°C/W
OperatingTemperature RangeOperatingTemperature RangeT J-65 to 150°C
StorageTemperature RangeStorageTemperature RangeT STG-65 to 175°C

SMF26A Thermal Information

ParameterParameterSymbolValueUnit
Peak Pulse Power Dissipation atT A =25°C (Note 1)8/20μsP PPM1000W
Peak Pulse Power Dissipation atT A =25°C (Note 1)10/1000μs (Note 2)P PPM200W
Power Dissipation On Infinite Heat Sink at TL=50°CPower Dissipation On Infinite Heat Sink at TL=50°CP D1W
Thermal Resistance Junction- to- AmbientThermal Resistance Junction- to- AmbientR Ɵ JA220°C/W
Thermal Resistance Junction- to- LeadThermal Resistance Junction- to- LeadR Ɵ JL100°C/W
OperatingTemperature RangeOperatingTemperature RangeT J-65 to 150°C
StorageTemperature RangeStorageTemperature RangeT STG-65 to 175°C

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
SMF200ALittelfuseSOD-123FL
SMF20ALittelfuseSOD-123F
SMF20CALittelfuseSOD-123FL
SMF250ALittelfuseSOD-123FL
SMF5.0ALittelfuseSOD-123FL
SMF5.0CALittelfuseSOD-123FL

Other Diodes

  • CDSOT23-SM712 – Bourns Inc., Surface Mount TVS Diode
  • VMNN110CMS-TR – Stanley Electric, Infrared Emitting Diode
  • SS34HE – Vishay Intertechnology, Schottky Barrier Rectifier
  • BSD3A311V – Brightking, ESD Protection Diode
  • 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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