# L9012QLT1G

**LRC** · Bipolar Transistors - BJT · SOT-23

L9012QLT1G from LRC, 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 | BASE | input | Base terminal of the PNP transistor, which controls collector current; for the Q suffix the DC current gain is hFE 150 to 300 at IC=-50 mA and VCE=-1 V. |
| 2 | EMITTER | passive | Emitter terminal of the PNP transistor; the datasheet lists the emitter cutoff current IEBO as -150 nA maximum at VBE=-4 V. |
| 3 | COLLECTOR | passive | Collector terminal of the PNP transistor, rated for VCEO -20 V, VCBO -40 V and continuous collector current IC -500 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-Emitter Voltage | VCEO |  |  | -20 | V |  | 1 |
| Collector-Base Voltage | VCBO |  |  | -40 | V |  | 1 |
| Emitter-Base Voltage | VEBO |  |  | -5 | V |  | 1 |
| Collector Current - Continuous | IC |  |  | -500 | mAdc |  | 1 |
| Total Device Dissipation (FR-5 Board) | PD |  |  | 225 | mW | FR-5 Board, TA=25°C | 1 |
| Derate above 25°C (FR-5 Board) |  |  |  | 1.8 | mW/°C | FR-5 Board, derate above TA=25°C | 1 |
| Total Device Dissipation (Alumina Substrate) | PD |  |  | 300 | mW | Alumina Substrate, TA=25°C | 1 |
| Derate above 25°C (Alumina Substrate) |  |  |  | 2.4 | mW/°C | Alumina Substrate, derate above TA=25°C | 1 |
| Thermal Resistance, Junction to Ambient (FR-5 Board) | RθJA |  |  | 556 | °C/W | FR-5 Board | 1 |
| Thermal Resistance, Junction to Ambient (Alumina Substrate) | RθJA |  |  | 417 | °C/W | Alumina Substrate | 1 |
| Junction and Storage Temperature | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Collector-Emitter Breakdown Voltage | V(BR)CEO | -20 |  |  | V | IC=-1.0mA | 1 |
| Emitter-Base Breakdown Voltage | V(BR)EBO | -5 |  |  | V | IE=-100µA | 1 |
| Collector-Base Breakdown Voltage | V(BR)CBO | -40 |  |  | V | IC=-100µA | 1 |
| Collector Cutoff Current | ICBO |  |  | -150 | nA | VCB=-35V | 1 |
| Emitter Cutoff Current | IEBO |  |  | -150 | nA | VBE=-4V | 1 |
| DC Current Gain (Grade Q) | hFE | 150 |  | 300 |  | IC=-50mA, VCE=-1V | 2 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  |  | -0.6 | V | IC=-500mA, IB=-50mA | 2 |

## CAD (KiCad official)

- Symbol: `L9012QLT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `l9012qlt1g-etched.step` / `l9012qlt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l9012qlt1g.step` / `l9012qlt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](docs/l9012qlt1g-datasheet.pdf) (2 pp, sha256 `c963d04ab5fcda21`, retrieved 2026-10-21, 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/l9012qlt1g-datasheet.pdf)