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SMAJ40CA-E3

Public Made by Adom

by adom

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

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SMAJ40CA-E3

Vishay Intertech · TVS · SMA(DO-214AC)

SMAJ40CA-E3 from Vishay Intertech, 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 A1 passive Bi-directional (CA) terminal with no polarity marking; electrical characteristics apply in both directions, with VWM 40 V and VBR 44.4 V to 49.1 V at 1.0 mA for SMAJ40A/CA.
2 A2 passive Second bi-directional (CA) terminal, interchangeable with the other; the SMAJ40CA is rated for 400 W peak pulse power (10/1000 μs) and a maximum clamping voltage of 64.5 V at IPPM 6.2 A.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
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
Breakdown voltage VBR 44.4 49.1 V at IT = 1.0 mA, pulse test tp ≤ 50 ms 2
Test current IT 1 mA 2
Stand-off voltage VWM 40 V 2
Maximum reverse leakage ID 1 µA at VWM 2
Maximum peak pulse surge current IPPM 6.2 A surge current waveform per fig. 3, derate per fig. 2 2
Maximum clamping voltage VC 64.5 V at IPPM 2
Peak pulse power dissipation PPPM 400 W 10/1000 μs waveform, TA = 25 °C 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1
Typical thermal resistance, junction to ambient RθJA 120 °C/W Mounted on minimum recommended pad layout 3
Typical thermal resistance, junction to lead RθJL 30 °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: SMAJ40CA-E3
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj40ca-e3-etched.step / smaj40ca-e3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj40ca-e3.step / smaj40ca-e3.glb are the bare package body.

Provenance

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

  • Datasheet: Vishay Intertech datasheet (5 pp, sha256 6a47e343783a0c89, 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