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SMCJ28AHE3_A

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Vishay Intertech TVS, SMC(DO-214AB). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SMCJ28AHE3_A

Vishay Intertech · TVS · SMC(DO-214AB)

SMCJ28AHE3_A from Vishay Intertech, in a SMC(DO-214AB). 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 terminal, marked by the cathode band on the uni-directional SMCJ28A, which has a 28 V stand-off voltage (VWM) and a 31.1 V to 34.4 V breakdown voltage at 1.0 mA.
2 A passive Anode terminal at the end opposite the cathode band, which is the end with no band, on the uni-directional SMCJ28A, which clamps at a maximum of 45.4 V at 33.0 A peak pulse current.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
Package SMC(DO-214AB)
Category TVS/Fuse/Board Level 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 VBR 31.1 34.4 V at IT = 1.0 mA 2
Stand-off voltage VWM 28 V 2
Maximum reverse leakage at VWM ID 1 μA at VWM 2
Maximum peak pulse surge current IPPM 33 A 10/1000 μs waveform 2
Maximum clamping voltage at IPPM VC 45.4 V at IPPM 2
Test current IT 1 mA 2
Peak pulse power dissipation PPPM 1500 W 10/1000 μs waveform, TA = 25 °C 1
Peak forward surge current (uni-directional only) IFSM 200 A 8.3 ms single half sine-wave, TA = 25 °C 1
Power dissipation on infinite heatsink PD 6.5 W TA = 50 °C 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1
Typical thermal resistance, junction to ambient RθJA 75 °C/W Mounted on minimum recommended pad layout 3
Typical thermal resistance, junction to lead RθJL 15 °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: SMCJ28AHE3_A
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
  • 3D model files: smcj28ahe3-a-etched.step / smcj28ahe3-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smcj28ahe3-a.step / smcj28ahe3-a.glb are the bare package body.

Provenance

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

  • Datasheet: Vishay Intertech datasheet (5 pp, sha256 7d7eb2c7682a066e, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (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