component

SMAJ75A

Public Made by Adom

by adom

WPMtek(Wei Pan Microelectronics) ESD And Surge Protection (TVS/ESD), SMA(DO-214AC). 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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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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SMAJ75A

WPMtek(Wei Pan Microelectronics) · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

SMAJ75A from WPMtek(Wei Pan Microelectronics), in a SMA(DO-214AC). 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 WPMtek(Wei Pan Microelectronics)
Package SMA(DO-214AC)
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
Stand-off voltage VR 75 V Unidirectional SMAJ75A; maximum voltage that can be applied 3
Reverse leakage current IR 1 μA @ VR = 75.0 V 3
Breakdown voltage VBR 83.3 92.1 V @ IT = 1 mA 3
Clamping voltage VC 121 V @ IPP = 3.3 A, surge waveform 10/1000μs 3
Storage temperature range Tstg -55 150 ℃ 4
Operating junction temperature range Tj -55 150 ℃ 4
Steady state power dissipation PM(AV) 3.3 W at TL=75℃ 4
Peak pulse power dissipation PPP 400 W 10/1000μs waveform 4
Maximum instantaneous forward voltage VF 5 V at 30A for unidirectional 4

CAD (KiCad official)

  • Symbol: SMAJ75A
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj75a-etched.step / smaj75a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj75a.step / smaj75a.glb are the bare package body.

Provenance

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

  • Datasheet: WPMtek(Wei Pan Microelectronics) datasheet (6 pp, sha256 73f81d8cee794e11, retrieved 2026-10-21, 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