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BM3139KT

Public Made by Adom

by adom

BORN MOSFETs, SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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bm3139kt-etched.glb bm3139kt: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
bm3139kt-etched.step bm3139kt: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
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bm3139kt-hero.overlay.json bm3139kt: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
bm3139kt.glb plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
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bm3139kt.step plain STEP: one free product with face colours (generated model was nested; tscircuit read it white) · Ray 17d ago
package.json bm3139kt: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
page.json bm3139kt: etched from the flattened plain STEP (service-occt 1.6.0, from the plain STEP) · Ray 17d ago
README.md Publish 0.1.0 · Ray 24d ago

BM3139KT

BORN · MOSFETs · SOT-523

BM3139KT from BORN, in a SOT-523. 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 G input Gate; ESD-protected gate input with VGS rating of ±12V and threshold of -0.35V to -1.2V at ID=-250uA.
2 S passive Source; P-channel MOSFET source terminal, continuous drain current -0.5A at TA=25°C.
3 D passive Drain; P-channel MOSFET drain terminal with VDS rating of -20V and RDS(on) typ 530mΩ at VGS=-4.5V.

Key specifications

Parameter Value
Manufacturer BORN
Package SOT-523
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: BM3139KT
  • Footprint: Package_TO_SOT_SMD:SOT-523
  • 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: bm3139kt-etched.step / bm3139kt-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bm3139kt.step / bm3139kt.glb are the bare package body.

Provenance

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

  • Datasheet: BORN datasheet (4 pp, sha256 566b5143bef5a339, retrieved 2026-10-09, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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