# ALJB772P01

**ALJ** · Bipolar (BJT) · TO-92

ALJB772P01 from ALJ, 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 this PNP transistor, with emitter-base voltage limited to VEBO = -6 V and emitter-base breakdown V(BR)EBO = -6 V at IE = -100 µA. |
| 2 | Collector | passive | Collector terminal, rated for collector-base voltage VCBO = -40 V, collector-emitter voltage VCEO = -30 V, and collector current IC = -2 A. |
| 3 | Base | passive | Base terminal; the datasheet specifies VBE(sat) of -1.5 V max and VCE(sat) of -0.5 V max at IC = -2 A with IB = -0.2 A. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ALJ |
| Package | TO-92 |
| 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 voltage | VCBO | -40 |  |  | V |  | 1 |
| Collector emitter voltage | VCEO | -30 |  |  | V |  | 1 |
| Emitter base voltage | VEBO | -6 |  |  | V |  | 1 |
| Collector current | IC | -2 |  |  | A |  | 1 |
| Collector power dissipation | PC |  |  | 625 | mW |  | 1 |
| Junction temperature | Tj |  |  | 150 | °C |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 1 |
| Thermal resistance from junction to ambient | RθJA |  |  | 200 | °C/W |  | 1 |
| Collector-base breakdown voltage | V(BR)CBO | -40 |  |  | V | IC=-100µA,IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | -30 |  |  | V | IC=-10mA,IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | -6 |  |  | V | IE=-100µA,IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | -1 | μA | VCB=-40V,IE=0 | 1 |
| Collector cut-off current | ICEO |  |  | -10 | μA | VCE=-30V, IB=0 | 1 |
| Emitter cut-off current | IEBO |  |  | -1 | μA | VEB=-6V,IC=0 | 1 |
| DC current gain hFE(1) | hFE(1) | 60 |  |  |  | VCE=-5V, IC=-1mA | 1 |
| DC current gain hFE(1) | hFE(1) | 60 |  | 400 |  | VCE=-2V, IC=-1A | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | -0.5 | V | IC=-2A,IB=-0.2A | 1 |
| Base-emitter saturation voltage | VBE(sat) |  |  | -1.5 | V | IC=-2A,IB=-0.2A | 1 |
| Transition frequency | fT | 50 | 80 |  | MHz | VCE=-5V,IC=-0.1A,f=10MHz | 1 |

## CAD (KiCad official)

- Symbol: `ALJB772P01`
- Footprint: `Package_TO_SOT_THT:TO-92_Inline`
- 3D model: TO-92 (KiCad packages3D, STEP)
- 3D model files: `aljb772p01-etched.step` / `aljb772p01-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `aljb772p01.step` / `aljb772p01.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ALJ datasheet](docs/aljb772p01-datasheet.pdf) (2 pp, sha256 `2c4ab7f0b8b4205d`, retrieved 2026-11-05, 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/aljb772p01-datasheet.pdf)