component

P4SMA540AHM3_B

Public Made by Adom

by adom

Vishay Intertech 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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P4SMA540AHM3_B

Vishay Intertech · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

P4SMA540AHM3_B 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 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 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 (min) VBR 513 V IT = 1.0 mA 2
Breakdown voltage (max) VBR 567 V IT = 1.0 mA 2
Maximum reverse leakage ID 1 µA at VWM 2
Maximum peak pulse current IPPM 0.41 A surge current waveform per fig. 3 (Note 2) 2
Maximum clamping voltage VC 740 V at IPPM 2
Maximum temperature coefficient of VBR 0.11 %/°C 2
Peak pulse power dissipation PPPM 400 W 10/1000 µs waveform (fig. 1) 1
Power dissipation on infinite heatsink PD 3.3 W on infinite heatsink at TA = 50 °C 1
Peak forward surge current IFSM 40 A 8.3 ms single half sine-wave, uni-directional only 1
Operating junction and storage temperature range TJ, TSTG -65 150 °C 1
Typical thermal resistance, junction to ambient air RθJA 120 °C/W mounted on minimum recommended pad layout 3
Typical thermal resistance, junction to lead RθJL 30 °C/W junction to lead 3
Stand-off voltage VWM 459 V 2

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: P4SMA540AHM3_B
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: p4sma540ahm3-b-etched.step / p4sma540ahm3-b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); p4sma540ahm3-b.step / p4sma540ahm3-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 63e69aece4f8bff0, 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