# 2SA733P

**ST(Semtech)** · Bipolar Transistors - BJT · TO-92

2SA733P 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 of the PNP transistor; -VEBO max 5 V. |
| 2 | Collector | passive | Collector of the PNP transistor; -VCBO 60 V, -VCEO 50 V, -IC max 150 mA. |
| 3 | Base | passive | Base of the PNP transistor; hFE groups R, O, Y, P, L measured at -VCE = 6 V, -IC = 1 mA. |

## 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 |  | -VCE = 6 V, -IC = 1 mA | 1 |
| Collector Base Cutoff Current | -ICBO |  |  | 100 | nA | -VCB = 60 V | 1 |
| Emitter Base Cutoff Current | -IEBO |  |  | 100 | nA | -VEB = 5 V | 1 |
| Collector Base Breakdown Voltage | -V(BR)CBO | 60 |  |  | V | -IC = 100 µA | 1 |
| Collector Emitter Breakdown Voltage | -V(BR)CEO | 50 |  |  | V | -IC = 10 mA | 1 |
| Emitter Base Breakdown Voltage | -V(BR)EBO | 5 |  |  | V | -IE = 10 µA | 1 |
| Collector Emitter Saturation Voltage | -VCE(sat) |  |  | 0.3 | V | -IC = 100 mA, -IB = 10 mA | 1 |
| Base Emitter On Voltage | -VBE(on) | 0.5 |  | 0.8 | V | -VCE = 6 V, -IC = 1 mA | 1 |
| Gain Bandwidth Product | fT | 50 |  |  | MHz | -VCE = 6 V, -IC = 10 mA | 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 | Ta = 25 °C | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C | Ta = 25 °C | 1 |
| Collector Output Capacitance | Cob |  | 2.8 |  | pF | -VCB = 10 V, f = 1 MHz | 1 |

## CAD (KiCad official)

- Symbol: `2SA733P`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `2sa733p-etched.step` / `2sa733p-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sa733p.step` / `2sa733p.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ST(Semtech) datasheet](docs/2sa733p-datasheet.pdf) (3 pp, sha256 `3ee92fec0860bcaa`, retrieved 2026-10-31, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/2sa733p-datasheet.pdf)