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SMBJ28CAHE3_B

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Vishay Intertech ESD And Surge Protection (TVS/ESD), DO-214AA(SMB). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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SMBJ28CAHE3_B

Vishay Intertech · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMB)

SMBJ28CAHE3_B from Vishay Intertech, in a DO-214AA(SMB). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
Package DO-214AA(SMB)
Category Circuit Protection
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Breakdown voltage (bidirectional, SMBJ28CA uses the SMBJ28A row) VBR 31.1 34.4 V Test current IT = 1.0 mA 2
Maximum reverse leakage at VWM ID 1 µA At VWM 2
Maximum peak pulse surge current IPPM 13.2 A Surge current waveform per fig. 3, derate per fig. 2 (note 2) 2
Maximum clamping voltage at IPPM VC 45.4 V At IPPM 2
Maximum temperature coefficient of VBR 0.098 %/°C 2
Peak pulse power dissipation PPPM 600 W 10/1000 µs waveform (fig. 1) 1
Power dissipation on infinite heatsink PD 5 W Infinite heatsink at TA = 50 °C 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1
Typical thermal resistance, junction to ambient RθJA 100 °C/W Mounted on minimum recommended pad layout 3
Typical thermal resistance, junction to lead RθJL 20 °C/W 3

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin Terminals: matte tin plated leads, solderable per J-STD-002 and JESD 22-B102 1

CAD (KiCad official)

  • Symbol: SMBJ28CAHE3_B
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
  • 3D model files: smbj28cahe3-b-etched.step / smbj28cahe3-b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj28cahe3-b.step / smbj28cahe3-b.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Vishay Intertech datasheet (6 pp, sha256 cfb8aab61e413586, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF