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SM30T30AY

Public Made by Adom

by adom

STMicroelectronics Electrostatic And Surge Protection (TVS/ESD), SMC(DO-214AB). 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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SM30T30AY

STMicroelectronics · Electrostatic And Surge Protection (TVS/ESD) · SMC(DO-214AB)

SM30T30AY from STMicroelectronics, 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 1 passive Terminal 1 of an unpolarised fuse; either orientation.
2 2 passive Terminal 2 of an unpolarised fuse; either orientation.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
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
Reverse leakage current at 25 °C IRM 0.2 µA at VRM = 26 V, Tj = 25 °C 3
Reverse leakage current at 85 °C IRM 1 µA at VRM = 26 V, 85 °C 3
Breakdown voltage VBR 28.9 30.4 31.9 V at IR = 1 mA 3
Clamping voltage (10/1000 µs) VCL 42.1 V at IPP = 71 A, 10/1000 µs 3
Peak pulse current (10/1000 µs) IPP 71 A 10/1000 µs; surge capability given for both directions 3
Dynamic resistance (10/1000 µs) RD 143 mΩ 10/1000 µs 3
Clamping voltage (8/20 µs) VCL 53.5 V at IPP = 626 A, 8/20 µs 3
Peak pulse current (8/20 µs) IPP 626 A 8/20 µs; surge capability given for both directions 3
Dynamic resistance (8/20 µs) RD 34.5 mΩ 8/20 µs 3
Breakdown voltage temperature coefficient αT 9.7 10-4/°C VBR(Tj) = VBR(25 °C) x (1 + αT x (Tj - 25)) 3
Peak pulse voltage ISO10605 contact discharge (C = 330 pF, R = 330 Ω) VPP 30 kV ISO10605, C = 330 pF, R = 330 Ω, contact discharge 2
Peak pulse voltage ISO10605 air discharge (C = 330 pF, R = 330 Ω) VPP 30 kV ISO10605, C = 330 pF, R = 330 Ω, air discharge 2
Peak pulse voltage ISO10605 / IEC 61000-4-2 contact discharge (C = 150 pF, R = 330 Ω) VPP 30 kV ISO10605 / IEC 61000-4-2, C = 150 pF, R = 330 Ω, contact discharge 2
Peak pulse voltage ISO10605 / IEC 61000-4-2 air discharge (C = 150 pF, R = 330 Ω) VPP 30 kV ISO10605 / IEC 61000-4-2, C = 150 pF, R = 330 Ω, air discharge 2
Peak pulse power dissipation PPP 3000 W Tj initial = Tamb 2
Storage temperature range Tstg -65 175 °C 2
Operating junction temperature range Tj -55 175 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s 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 • Lead finishing: matte tin plating Complies with the following standards 1

CAD (KiCad official)

  • Symbol: SM30T30AY
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (16 pp, sha256 7643ae0f2d1fb9d6, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal 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