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BAS31

Public Made by Adom

by adom

Nexperia Avalanche Diodes, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs bas31: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers bas31: viewers · Ray 27d ago
bas31-etched.fit.json bas31: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
bas31-etched.glb bas31: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
bas31-etched.step bas31: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
bas31.glb Publish 0.1.0 · Ray 27d ago
bas31.kicad_mod Publish 0.1.0 · Ray 27d ago
bas31.kicad_sym Publish 0.1.0 · Ray 27d ago
bas31.lbr Publish 0.1.0 · Ray 27d ago
bas31.step Publish 0.1.0 · Ray 27d ago
package.json Publish 0.1.0 · Ray 27d ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 12d ago
README.md bas31: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 18d ago

BAS31

Nexperia · Avalanche Diodes · SOT-23

BAS31 from Nexperia, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 A passive Anode of the first diode. Series path is A (pin 1) -> diode -> CC (pin 3) -> diode -> K (pin 2). VF max 1.25 V at IF = 400 mA (Tj = 25 C).
2 K passive Cathode of the second diode. Continuous reverse voltage max 90 V; repetitive peak reverse voltage max 110 V.
3 CC passive Common connection between the cathode of the first diode and the anode of the second diode, forming a series-connected double diode. Available as a shared node for the two switching diodes.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-23
Category Diodes
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • BAS31

CAD (KiCad official)

  • Symbol: BAS31
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bas31-etched.step / bas31-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bas31.step / bas31.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (9 pp, sha256 09c8e51b0edffd81, retrieved 2026-08-17, tier: manufacturer)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF