component
2SA1837-O
Public Made by Adomby adom
JSMSEMI Bipolar Transistors - BJT, TO-220F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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2SA1837-O
JSMSEMI · Bipolar Transistors - BJT · TO-220F
2SA1837-O from JSMSEMI, in a TO-220F. 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 | B | input | Base terminal; Base Current IB max -0.1 A, Emitter-Base Voltage VEBO -5 V. |
| 2 | C | passive | Collector terminal; VCBO and VCEO -230 V, Collector Current IC -1 A (DC). |
| 3 | E | passive | Emitter terminal of the PNP transistor, referenced for VEBO -5 V and VCE(sat) max -1.5 V at IC=-0.5A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-220F |
| Category | Transistors |
| Pins | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC | BASE-EMITTER VOLTAGE VBE˄V˅ PC-TC | 2 |
CAD (KiCad official)
- Symbol:
2SA1837-O - Footprint:
Package_TO_SOT_THT:TO-220F-3_Vertical - 3D model: TO-220F (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JSMSEMI datasheet (3 pp, sha256
7e94071ea1311829, 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).
# 2SA1837-O
**JSMSEMI** · Bipolar Transistors - BJT · TO-220F
2SA1837-O from JSMSEMI, in a TO-220F. 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 | B | input | Base terminal; Base Current IB max -0.1 A, Emitter-Base Voltage VEBO -5 V. |
| 2 | C | passive | Collector terminal; VCBO and VCEO -230 V, Collector Current IC -1 A (DC). |
| 3 | E | passive | Emitter terminal of the PNP transistor, referenced for VEBO -5 V and VCE(sat) max -1.5 V at IC=-0.5A. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JSMSEMI |
| Package | TO-220F |
| Category | Transistors |
| Pins | 3 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC | | BASE-EMITTER VOLTAGE VBE˄V˅ PC-TC | 2 |
## CAD (KiCad official)
- Symbol: `2SA1837-O`
- Footprint: `Package_TO_SOT_THT:TO-220F-3_Vertical`
- 3D model: TO-220F (KiCad packages3D, STEP)
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [JSMSEMI datasheet](docs/2sa1837-o-datasheet.pdf) (3 pp, sha256 `7e94071ea1311829`, 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](docs/2sa1837-o-datasheet.pdf)