component
2SA940
Public Made by Adomby adom
Changjing Bipolar (BJT), TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 15d ago |
| viewers | 15d ago |
| 2sa940-etched.glb | 15d ago |
| 2sa940-etched.step | 15d ago |
| 2sa940-hero.glb | 15d ago |
| 2sa940-hero.overlay.json | 15d ago |
| 2sa940.glb | 15d ago |
| 2sa940.kicad_mod | 15d ago |
| 2sa940.kicad_sym | 15d ago |
| 2sa940.lbr | 15d ago |
| 2sa940.step | 15d ago |
| package.json | 15d ago |
| page.json | 10d ago |
| README.md | 10d ago |
2SA940
Changjing · Bipolar (BJT) · TO-220
2SA940 from Changjing, in a TO-220. 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 PNP transistor; base-emitter voltage VBE is -0.65 V to -0.85 V at VCE=-10 V, IC=-0.5 A, and base drive for VCE(sat) is tested at IB=-50 mA. |
| 2 | COLLECTOR | passive | Collector terminal; limits are VCBO -150 V, VCEO -150 V, continuous IC -1.5 A and collector power dissipation PC 1.5 W. |
| 3 | EMITTER | passive | Emitter terminal; the emitter-base limit is VEBO -5 V and the emitter-base breakdown V(BR)EBO is -5 V minimum at IE=-100 μA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | TO-220 |
| Category | Transistors/Thyristors |
| Pins | 3 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector-base breakdown voltage | V(BR)CBO | -150 | V | IC=-100μA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | -150 | V | IC=-1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-100μA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | -10 | μA | VCB=-120V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | -10 | μA | VEB=-5V, IC=0 | 1 | ||
| DC current gain | hFE | 40 | 140 | VCE=-10V, IC=-0.5A | 1 | ||
| Base-emitter voltage | VBE | -0.65 | -0.85 | V | VCE=-10V, IC=-0.5A | 1 | |
| Collector-emitter saturation voltage | VCE(sat) | -1.5 | V | IC=-0.5A, IB=-50mA | 1 | ||
| Transition frequency | fT | 4 | MHz | VCE=-10V, IC=-0.5A | 1 | ||
| Collector output capacitance | Cob | 55 | pF | VCB=-10V, IE=0, f=1MHz | 1 | ||
| Collector-base voltage | VCBO | -150 | V | Ta=25℃ unless otherwise noted | 1 | ||
| Collector-emitter voltage | VCEO | -150 | V | Ta=25℃ unless otherwise noted | 1 | ||
| Emitter-base voltage | VEBO | -5 | V | Ta=25℃ unless otherwise noted | 1 | ||
| Collector current, continuous | IC | -1.5 | A | Ta=25℃ unless otherwise noted | 1 | ||
| Collector power dissipation | PC | 1.5 | W | Ta=25℃ unless otherwise noted | 1 | ||
| Junction temperature | Tj | 150 | ℃ | 1 | |||
| Storage temperature range | Tstg | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
2SA940 - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220 (KiCad packages3D, STEP)
- 3D model files:
2sa940-etched.step/2sa940-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sa940.step/2sa940.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (2 pp, sha256
6bbb477e447ac45c, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).