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1.5KE400ARL

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STMicroelectronics ESD And Surge Protection (TVS/ESD), DO-201. 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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1.5KE400ARL

STMicroelectronics · ESD And Surge Protection (TVS/ESD) · DO-201

1.5KE400ARL from STMicroelectronics, in a DO-201. 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 STMicroelectronics
Package DO-201
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
Reverse leakage current (IRM), 1.5KE400A IRM 1 µA @ VRM = 342 V 3
Stand-off voltage, 1.5KE400A VRM 342 V 3
Breakdown voltage, 1.5KE400A VBR 380 V @ IR = 1 mA 3
Breakdown voltage, 1.5KE400A VBR 420 V @ IR = 1 mA 3
Clamping voltage, 1.5KE400A VCL 548 V @ IPP 10/1000 µs 3
Clamping voltage, 1.5KE400A VCL 706 V @ IPP 8/20 µs 3
Breakdown voltage nominal, 1.5KE400A VBR 400 V @ IR = 1 mA 3
Voltage temperature coefficient, 1.5KE400A αT 11 10-4/°C ΔVBR = αT × (Tamb − 25) × VBR(25 °C) 3
Capacitance, 1.5KE400A (unidirectional) C 390 pF VR = 0 V, F = 1 MHz 3
Peak pulse power dissipation PPP 1500 W 10/1000 µs, Tj initial = Tamb 2
Power dissipation on infinite heatsink P 5 W Tamb = 75 °C 2
Non repetitive surge peak forward current (unidirectional types) IFSM 200 A tp = 10 ms, Tj initial = Tamb 2
Storage temperature range Tstg -65 175 °C 2
Maximum operating junction temperature Tj 175 °C 2
Maximum lead temperature for soldering TL 230 °C 10 s at 5 mm from case 2
Junction to leads thermal resistance Rth(j-l) 20 °C/W 2
Junction to ambient thermal resistance Rth(j-a) 75 °C/W On printed circuit, L lead = 10 mm 2

CAD (KiCad official)

  • Symbol: 1.5KE400ARL
  • Footprint: Diode_THT:D_DO-201AD_P15.24mm_Horizontal
  • 3D model: DO-201 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: STMicroelectronics datasheet (10 pp, sha256 6e5b7b602a780201, retrieved 2026-10-14, 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