component
FJT44
Public Made by Adomby adom
WEIDA Bipolar (BJT), SOT-223-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownFJT44
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fjt44.step/fjt44.glbare 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, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).