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Contents

README

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SM30T23CAY

STMicroelectronics · TVS · SMC(DO-214AB)

SM30T23CAY 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
Breakdown voltage VBR 22.2 23.4 24.6 V at IBR = 1 mA, Tamb = 25 °C 3
Reverse leakage current at 25 °C IRM 0.2 µA at VRM = 20 V, 25 °C 3
Reverse leakage current at 85 °C IRM 1 µA at VRM = 20 V, 85 °C 3
Stand-off voltage VRM 20 V 3
Clamping voltage 10/1000 µs VCL 32.4 V 10/1000 µs, IPP = 93 A 3
Peak pulse current 10/1000 µs IPP 93 A 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 83.9 mΩ 10/1000 µs 3
Clamping voltage 8/20 µs VCL 42.8 V 8/20 µs, IPP = 747 A 3
Peak pulse current 8/20 µs IPP 747 A 8/20 µs 3
Dynamic resistance 8/20 µs RD 24.4 mΩ 8/20 µs 3
Temperature coefficient of VBR αT 9.4 10^-4/°C 3
Peak pulse voltage ISO10605 contact discharge VPP -30 30 kV ISO10605, C = 330 pF, R = 330 Ω, contact discharge 2
Peak pulse voltage ISO10605 air discharge VPP -30 30 kV ISO10605, C = 330 pF, R = 330 Ω, air discharge 2
Peak pulse voltage ISO10605/IEC 61000-4-2 contact discharge VPP -30 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 VPP -30 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: SM30T23CAY
  • 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 f6d47dc33b5be94c, retrieved 2026-10-30, 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