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FJT44

Public Made by Adom

by adom

WEIDA Bipolar (BJT), SOT-223-4. 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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FJT44

WEIDA · Bipolar (BJT) · SOT-223-4

FJT44 from WEIDA, in a SOT-223-4. 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 Base input Base terminal of the NPN transistor, with VEBO max 6 V and a DC current gain hFE of 50 min to 200 max at VCE=10V, IC=10mA.
2 Collector passive Collector terminal, connected to pin 4 (tab), rated VCEO 400 V, VCBO 500 V and IC max 300 mA.
3 Emitter passive Emitter terminal of the NPN transistor, with emitter-base breakdown voltage BVEB of 6 V min at IE=100µA.
4 Collector passive Collector tab, connected to pin 2, with power dissipation of 2 W at TC=25℃ and thermal resistance junction-to-ambient of 62.5 ℃/W.

Key specifications

Parameter Value
Manufacturer WEIDA
Package SOT-223-4
Category Transistors/Thyristors
Pins 4

CAD (KiCad official)

  • Symbol: FJT44
  • Footprint: Package_TO_SOT_SMD:SOT-223
  • 3D model: SOT-223-4 (KiCad packages3D, STEP)
  • 3D model files: fjt44-etched.step / fjt44-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fjt44.step / fjt44.glb are the bare package body.

Provenance

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

  • Datasheet: WEIDA datasheet (4 pp, sha256 4854b6c7361c85aa, retrieved 2026-10-27, 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