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SMF170A

Transient Voltage Suppressor (TVS) Diode

The SMF170A is a transient voltage suppressor (tvs) diode from Littelfuse. View the full SMF170A datasheet below including key specifications, electrical characteristics, absolute maximum ratings.

SMF170A shares its datasheet with SMF17CA, whose page lists every part number it covers.

Official SMF170A datasheet (PDF) — the source this page was extracted from.

Manufacturer

Littelfuse

Category

Diodes

Package

SOD-123FL

SMF170A Key Specifications

ParameterValue
Peak Pulse Power Dissipation (P PPM)200 Watts (10/1000μs waveform)
Reverse Stand-off Voltage (V RWM)3.3 V to 120 V (for SMF3.3A to SMF120A/CA)
Breakdown Voltage Min. (V BR)5.2 V to 133 V (for SMF3.3A to SMF120A/CA, at I T)
Test Current (I T)1 mA or 10 mA
Maximum Clamping Voltage (V C)8.0 V to 193 V (for SMF3.3A to SMF120A/CA, at I PP)
Peak Pulse Current (I PP)0.93 A to 25.0 A (for SMF3.3A to SMF120A/CA)
Reverse Leakage (I R)1 μA to 800 μA (at V RWM)

SMF170A Overview

Part: SMF Series — Semiware Semiconductor Inc.

Type: Transient Voltage Suppressor (TVS) Diode

Description: A low profile, surface mount transient voltage suppressor diode series with 200 W peak pulse power capability (10/1000μs waveform) and very fast response time, available in uni-polar and bi-polar configurations.

Operating Conditions:

  • Operating Junction Temperature: -55 to +150 °C

Absolute Maximum Ratings:

  • Max Peak Pulse Power Dissipation (10/1000μs): 200 Watts
  • Max Steady State Power Dissipation (TA=50°C): 1 Watt
  • Max Junction/Storage Temperature: -55 to +150 °C

Key Specs:

  • Peak Pulse Power Dissipation (P PPM): 200 Watts (10/1000μs waveform)
  • Reverse Stand-off Voltage (V RWM): 3.3 V to 120 V (for SMF3.3A to SMF120A/CA)
  • Breakdown Voltage Min. (V BR): 5.2 V to 133 V (for SMF3.3A to SMF120A/CA, at I T)
  • Test Current (I T): 1 mA or 10 mA
  • Maximum Clamping Voltage (V C): 8.0 V to 193 V (for SMF3.3A to SMF120A/CA, at I PP)
  • Peak Pulse Current (I PP): 0.93 A to 25.0 A (for SMF3.3A to SMF120A/CA)
  • Reverse Leakage (I R): 1 μA to 800 μA (at V RWM)
  • Response time: Very fast

Features:

  • Low profile package
  • Ideal for automated placement
  • 200 Watt peak pulse power capability with a 10/1000μs waveform
  • For surface mounted applications to optimize board space
  • Excellent clamping capability
  • Very fast response time
  • Low incremental surge resistance

Applications:

  • Power supply protection
  • Automotive application
  • Industrial application
  • Power management

Package:

  • SOD-123FL

SMF170A Features

  • Low profile package
  • Ideal for automated placement
  • 200 Watt peak pulse power capability with a 10/1000μs waveform
  • For surface mounted applicatons to optimize board space
  • Excellent clamping capability
  • Very fast response time
  • Low incremental surge resistance

SMF170A Applications

  • Power supply protection

  • Automotive application

  • Industrial application

  • Power management

SMF170A Electrical Characteristics

Part NumberPart NumberDevice Marking CodeDevice Marking CodeReverse Stand-off VoltageBreakdown Voltage Min.@I TBreakdown Voltage Max.@I TTest CurrentMaximum Clamping Voltage @I PPPeak Pulse CurrentReverse Leakage @V RWM
Uni-PolarBi-PolarUniBiV RWM (V)V BR (V)V BR (V)I T (mA)V C (V)I PP (A)I R (uA)
SMF3.3ASMF3.3CAHZGZ3.35.26.00108.025.0800
SMF5.0ASMF5.0CAAEFE5.06.47.00109.221.7800
SMF6.0ASMF6.0CAAGFG6.06.677.371010.319.4800
SMF6.5ASMF6.5CAAKFK6.57.227.981011.217.9500
SMF7.0ASMF7.0CAAMFM7.07.788.601012.016.7200
SMF7.5ASMF7.5CAAPFP7.58.339.21112.915.5100
SMF8.0ASMF8.0CAARFR8.08.899.83113.614.750
SMF8.5ASMF8.5CAATFT8.59.4410.4114.413.920
SMF9.0ASMF9.0CAAVFV9.010.011.1115.413.010
SMF10ASMF10CAAXFX10.011.112.3117.011.85
SMF11ASMF11CAAZFZ11.012.213.5118.211.01
SMF12ASMF12CABEGE12.013.314.7119.910.11
SMF13ASMF13CABGGG13.014.415.9121.59.31
SMF14ASMF14CABKGK14.015.617.2123.28.61
SMF15ASMF15CABMGM15.016.718.5124.48.21
SMF16ASMF16CABPGP16.017.819.7126.07.71
SMF17ASMF17CABRGR17.018.920.9127.67.21
SMF18ASMF18CABTGT18.020.022.1129.26.81
SMF20ASMF20CABVGV20.022.224.5132.46.21
SMF22ASMF22CABXGX22.024.426.9135.55.61
SMF24ASMF24CABZGZ24.026.729.5138.95.11
SMF26ASMF26CACEHE26.028.931.9142.14.81
SMF28ASMF28CACGHG28.031.134.4145.44.41
SMF30ASMF30CACKHK30.033.336.8148.44.11
SMF33ASMF33CACMHM33.036.740.6153.33.81
SMF36ASMF36CACPHP36.040.044.2158.13.41
SMF40ASMF40CACRHR40.044.449.1164.53.11
SMF43ASMF43CACTHT43.047.852.8169.42.91
SMF45ASMF45CACVHV45.050.055.3172.72.81
SMF48ASMF48CACXHX48.053.358.9177.42.61
SMF51ASMF51CACZHZ51.056.762.7182.42.41
SMF54ASMF54CADEIE54.060.066.3187.12.31
SMF58ASMF58CADGIG58.064.471.2193.62.11

SMF170A Absolute Maximum Ratings

ParameterSymbolValueUnit
Peak Pulse Power Dissipation on 10/1000us waveform (Note1)P PPM200Watts
Steady State Power Dissipation at T A =50°CP D1Watts

Notes :

1.Non-repetitive current pulse,T A =25°C.

2.8.3ms single half sine-wave, or equivalent square wave, Duty cycle = 4 pulses per minutes maximum

SMF170A Thermal Information

ParameterSymbolValueUnit
Operating Junction TemperatureT J-55 to +150°C
Storage Temperature RangeT STG-55 to +150°C
Junction to Ambient on printed circuitR θJA220°C/W

Bi-directionnal

SMF170A Package Information

Ref.MillimetersMillimetersInchesInches
Ref.Min.Max.Min.Max.
A0.951.450.0370.057
A10.000.100.0000.004
b0.701.200.0280.047
c0.050.300.0020.012
D1.502.000.0590.079
E2.503.100.0980.122
L0.350.900.0140.035
H E3.403.900.1340.154

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
SMF170CALittelfuseSOD-123FL
SMF17ALittelfuseSOD-123FL
SMF17CALittelfuseSOD-123FL

Other Diodes

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  • VMNN110CMS-TR – Stanley Electric, Infrared Emitting Diode
  • ESD5Z2.5T1G – onsemi, ESD Protection TVS Diode
  • PMEG4010CEJ – Nexperia, Schottky Barrier Rectifier
  • BAT54S – Diotec Semiconductor, Dual Schottky Barrier Diode (Series)

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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