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2SC945P
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ST(Semtech) Bipolar Transistors - BJT, TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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2SC945P
ST(Semtech) · Bipolar Transistors - BJT · TO-92
2SC945P from ST(Semtech), in a TO-92. 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 | Emitter | passive | Emitter terminal of the NPN transistor, with emitter-base voltage VEBO rated at 5 V maximum and collector current IC rated at 150 mA maximum. |
| 2 | Collector | passive | Collector terminal of the NPN transistor, rated for collector-base voltage VCBO of 60 V and collector-emitter voltage VCEO of 50 V, with collector current IC of 150 mA and total power dissipation Ptot of 250 mW. |
| 3 | Base | passive | Base terminal of the NPN transistor, which drives the device with IC/IB = 10 at IC = 100 mA for the stated collector-emitter saturation voltage of 0.3 V maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST(Semtech) |
| Package | TO-92 |
| Category | Transistors |
| 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 |
|---|---|---|---|---|---|---|---|
| DC Current Gain, group P | hFE | 200 | 400 | at VCE = 6 V, IC = 1 mA; current gain group P | 1 | ||
| Collector Base Cutoff Current | ICBO | 100 | nA | at VCB = 40 V | 1 | ||
| Emitter Base Cutoff Current | IEBO | 100 | nA | at VEB = 3 V | 1 | ||
| Collector Base Breakdown Voltage | V(BR)CBO | 60 | V | at IC = 100 µA | 1 | ||
| Collector Emitter Breakdown Voltage | V(BR)CEO | 50 | V | at IC = 10 mA | 1 | ||
| Emitter Base Breakdown Voltage | V(BR)EBO | 5 | V | at IE = 10 µA | 1 | ||
| Collector Emitter Saturation Voltage | VCE(sat) | 0.3 | V | at IC = 100 mA, IB = 10 mA | 1 | ||
| Gain Bandwidth Product | fT | 300 | MHz | at VCE = 6 V, IC = 10 mA | 1 | ||
| Output Capacitance | Cob | 2.5 | pF | at VCB = 6 V, f = 1 MHz | 1 | ||
| Collector Base Voltage | VCBO | 60 | V | Ta = 25 °C | 1 | ||
| Collector Emitter Voltage | VCEO | 50 | V | Ta = 25 °C | 1 | ||
| Emitter Base Voltage | VEBO | 5 | V | Ta = 25 °C | 1 | ||
| Collector Current | IC | 150 | mA | Ta = 25 °C | 1 | ||
| Power Dissipation | Ptot | 250 | mW | Ta = 25 °C | 1 | ||
| Junction Temperature | Tj | 150 | °C | 1 | |||
| Storage Temperature Range | Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
2SC945P - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files:
2sc945p-etched.step/2sc945p-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sc945p.step/2sc945p.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ST(Semtech) datasheet (2 pp, sha256
f8e3f7b4c6461744, retrieved 2026-10-28, tier: manufacturer) - 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).
# 2SC945P
**ST(Semtech)** · Bipolar Transistors - BJT · TO-92
2SC945P from ST(Semtech), in a TO-92. 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 | Emitter | passive | Emitter terminal of the NPN transistor, with emitter-base voltage VEBO rated at 5 V maximum and collector current IC rated at 150 mA maximum. |
| 2 | Collector | passive | Collector terminal of the NPN transistor, rated for collector-base voltage VCBO of 60 V and collector-emitter voltage VCEO of 50 V, with collector current IC of 150 mA and total power dissipation Ptot of 250 mW. |
| 3 | Base | passive | Base terminal of the NPN transistor, which drives the device with IC/IB = 10 at IC = 100 mA for the stated collector-emitter saturation voltage of 0.3 V maximum. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ST(Semtech) |
| Package | TO-92 |
| Category | Transistors |
| 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 |
|---|---|---|---|---|---|---|---|
| DC Current Gain, group P | hFE | 200 | | 400 | | at VCE = 6 V, IC = 1 mA; current gain group P | 1 |
| Collector Base Cutoff Current | ICBO | | | 100 | nA | at VCB = 40 V | 1 |
| Emitter Base Cutoff Current | IEBO | | | 100 | nA | at VEB = 3 V | 1 |
| Collector Base Breakdown Voltage | V(BR)CBO | 60 | | | V | at IC = 100 µA | 1 |
| Collector Emitter Breakdown Voltage | V(BR)CEO | 50 | | | V | at IC = 10 mA | 1 |
| Emitter Base Breakdown Voltage | V(BR)EBO | 5 | | | V | at IE = 10 µA | 1 |
| Collector Emitter Saturation Voltage | VCE(sat) | | | 0.3 | V | at IC = 100 mA, IB = 10 mA | 1 |
| Gain Bandwidth Product | fT | | 300 | | MHz | at VCE = 6 V, IC = 10 mA | 1 |
| Output Capacitance | Cob | | 2.5 | | pF | at VCB = 6 V, f = 1 MHz | 1 |
| Collector Base Voltage | VCBO | | | 60 | V | Ta = 25 °C | 1 |
| Collector Emitter Voltage | VCEO | | | 50 | V | Ta = 25 °C | 1 |
| Emitter Base Voltage | VEBO | | | 5 | V | Ta = 25 °C | 1 |
| Collector Current | IC | | | 150 | mA | Ta = 25 °C | 1 |
| Power Dissipation | Ptot | | | 250 | mW | Ta = 25 °C | 1 |
| Junction Temperature | Tj | | | 150 | °C | | 1 |
| Storage Temperature Range | Tstg | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `2SC945P`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `2sc945p-etched.step` / `2sc945p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sc945p.step` / `2sc945p.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [ST(Semtech) datasheet](docs/2sc945p-datasheet.pdf) (2 pp, sha256 `f8e3f7b4c6461744`, retrieved 2026-10-28, tier: manufacturer)
- **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/2sc945p-datasheet.pdf)