component
MMBTA44
Public Made by Adomby adom
hongjiacheng Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MMBTA44
hongjiacheng · Bipolar (BJT) · SOT-23
MMBTA44 from hongjiacheng, in a SOT-23. 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 | passive | Base terminal of the NPN transistor; the emitter-base breakdown voltage V(BR)EBO is 6.0 V minimum at IE=10μA, and the emitter-base cut-off test uses VEB=4.0V. |
| 2 | E | passive | Emitter terminal of the NPN transistor; the absolute maximum emitter-base voltage VEBO is 6.0 V, with collector current limited to 0.2 A. |
| 3 | C | passive | Collector terminal of the NPN transistor; limited to a collector-base voltage VCBO of 400 V, a collector-emitter voltage VCEO of 400 V, a collector current IC of 0.2 A, and a collector power dissipation PC of 350 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
CAD (KiCad official)
- Symbol:
MMBTA44 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbta44-etched.step/mmbta44-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbta44.step/mmbta44.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: hongjiacheng datasheet (3 pp, sha256
1056e403a2ffc6e1, retrieved 2026-10-08, 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).
# MMBTA44
**hongjiacheng** · Bipolar (BJT) · SOT-23
MMBTA44 from hongjiacheng, in a SOT-23. 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 | passive | Base terminal of the NPN transistor; the emitter-base breakdown voltage V(BR)EBO is 6.0 V minimum at IE=10μA, and the emitter-base cut-off test uses VEB=4.0V. |
| 2 | E | passive | Emitter terminal of the NPN transistor; the absolute maximum emitter-base voltage VEBO is 6.0 V, with collector current limited to 0.2 A. |
| 3 | C | passive | Collector terminal of the NPN transistor; limited to a collector-base voltage VCBO of 400 V, a collector-emitter voltage VCEO of 400 V, a collector current IC of 0.2 A, and a collector power dissipation PC of 350 mW. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | hongjiacheng |
| Package | SOT-23 |
| Category | Transistors/Thyristors |
| Pins | 3 |
## CAD (KiCad official)
- Symbol: `MMBTA44`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbta44-etched.step` / `mmbta44-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbta44.step` / `mmbta44.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [hongjiacheng datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8755885246280163328) (3 pp, sha256 `1056e403a2ffc6e1`, retrieved 2026-10-08, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/mmbta44-datasheet.pdf)