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SM6T24A

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STMicroelectronics TVS, SMB(DO-214AA). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SM6T24A

STMicroelectronics · TVS · SMB(DO-214AA)

SM6T24A from STMicroelectronics, in a SMB(DO-214AA). 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 of the unidirectional SM6T24A, marked by the cathode band; it connects to the protected line and is stand-off rated at VRM 20.5 V with VBR 22.8 V min to 25.2 V max.
2 A passive Anode of the unidirectional SM6T24A, normally connected to ground, with a clamping voltage of 33.2 V max at 18 A (10/1000 µs).

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package SMB(DO-214AA)
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
Leakage current max at VRM, 25 °C IRM 0.2 µA @ VRM, 25 °C 3
Leakage current max at VRM, 85 °C IRM 1 µA @ VRM, 85 °C 3
Stand-off voltage VRM 20.5 V 3
Breakdown voltage VBR 22.8 24 25.2 V @ IR = 1 mA, pulse test tp < 50 ms 3
Test current for VBR IR 1 mA VBR measurement 3
Clamping voltage 10/1000 µs VCL 33.2 V @ IPP = 18 A, 10/1000 µs 3
Dynamic resistance 10/1000 µs RD 0.444 Ω 10/1000 µs 3
Clamping voltage 8/20 µs VCL 42.8 V @ IPP = 93 A, 8/20 µs 3
Dynamic resistance 8/20 µs RD 0.189 Ω 8/20 µs 3
Voltage temperature coefficient αT 9.4 10-4/°C 3
Peak pulse power dissipation PPP 600 W Tj initial = Tamb 2
Storage temperature range Tstg -65 150 °C 2
Operating junction temperature range Tj -55 150 °C 2
Maximum lead temperature for soldering TL 260 °C during 10 s 2
Thermal resistance junction to leads Rth(j-l) 20 °C/W 2
Thermal resistance junction to ambient Rth(j-a) 100 °C/W on printed circuit on recommended pad layout 2

CAD (KiCad official)

  • Symbol: SM6T24A
  • Footprint: Diode_SMD:D_SMB
  • 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
  • 3D model files: sm6t24a-etched.step / sm6t24a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sm6t24a.step / sm6t24a.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (10 pp, sha256 9340708960a8d7f6, retrieved 2026-10-22, 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