# 2SC1815H

**LGE** · Bipolar (BJT) · SOT-23

2SC1815H from LGE, 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 | input | Base; drive terminal, with VEBO max 5 V and base current max 50 mA. |
| 2 | E | passive | Emitter; main current return terminal, with IC max 150 mA continuous. |
| 3 | C | passive | Collector; VCBO 60 V, VCEO 50 V, IC 150 mA continuous, PC 400 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LGE |
| Package | SOT-23 |
| 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 |  |  | 60 | V |  | 1 |
| Collector-Emitter Voltage | VCEO |  |  | 50 | V |  | 1 |
| Emitter-Base Voltage | VEBO |  |  | 5 | V |  | 1 |
| Collector Current -Continuous | IC |  |  | 150 | mA |  | 1 |
| Base Current | IB |  |  | 50 | mA |  | 1 |
| Collector Dissipation | PC |  |  | 400 | mW |  | 1 |
| Junction and Storage Temperature | Tj,Tstg | -55 |  | 150 | ℃ |  | 1 |
| Collector-base breakdown voltage | V(BR)CBO | 60 |  |  | V | IC=100μA,IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | 50 |  |  | V | IC=0.1mA,IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | 5 |  |  | V | IC=0.1mA,IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | 0.1 | μA | VCB=60V,IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | 0.1 | μA | VEB=5V,IC=0 | 1 |
| DC current gain | hFE | 130 |  | 400 |  | VCE=6V,IC=2mA | 1 |
| DC current gain | hFE | 25 | 100 |  |  | VCE=6V,IC=150mA | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  | 0.1 | 0.25 | V | IC=100mA, IB=10mA | 1 |
| Base-emitter saturation voltage | VBE(sat) |  |  | 1 | V | IC=100mA, IB=10mA | 1 |
| Transition frequency | fT | 80 |  |  | MHz | VCE=10V, IC= 1mA, f=30MHz | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing | PC |  | IB Base Current 50 mA PC Collector Dissipation 400 mW | 1 |

## CAD (KiCad official)

- Symbol: `2SC1815H`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `2sc1815h-etched.step` / `2sc1815h-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sc1815h.step` / `2sc1815h.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LGE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917110512209920) (2 pp, sha256 `48b16b9508a5b8cf`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/2sc1815h-datasheet.pdf)