# L2SC3837LT1G

**LRC** · Bipolar (BJT) · SOT-23

L2SC3837LT1G 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 | passive | Base terminal of the device; the datasheet gives the pin assignment only and states no separate base limit, with the device's maximum ratings being VCBO 30 V, VEBO 3 V and IC 50 mA. |
| 2 | EMITTER | passive | Emitter terminal; the emitter-base voltage is rated at a maximum of 3 V (VEBO) and the emitter cutoff current is at most 0.5 µA at VEB=2V. |
| 3 | COLLECTOR | passive | Collector terminal; rated for a maximum collector-base voltage of 30 V (VCBO), collector-emitter voltage of 18 V (VCEO) and collector current of 50 mA (IC). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| 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 breakdown voltage | BVCBO | 30 |  |  | V | IC=10µA | 1 |
| Collector-emitter breakdown voltage | BVCEO | 18 |  |  | V | IC=1mA | 1 |
| Emitter-base breakdown voltage | BVEBO | 3 |  |  | V | IE=10µA | 1 |
| Collector cutoff current | ICBO |  |  | 0.5 | µA | VCB=10V | 1 |
| Emitter cutoff current | IEBO |  |  | 0.5 | µA | VEB=2V | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | 0.5 | V | IC/IB=20mA/4mA | 1 |
| DC current transfer ratio | hFE | 56 |  | 180 | - | VCE/IC=10V/10mA | 1 |
| Transition frequency | fT | 600 | 1500 |  | MHz | VCB=10V, IC=10mA, f=200MHz | 1 |
| Output capacitance | Cob |  | 0.9 | 1.5 | pF | VCB=10V, IE=0A, f=1MHz | 1 |
| Collector-base time constant | rbb`Cc |  | 6 | 13 | ps | VCB=10V, IC=10mA, f=31.8MHz | 1 |
| Collector-base voltage | VCBO |  |  | 30 | V |  | 1 |
| Collector-emitter voltage | VCEO |  |  | 18 | V |  | 1 |
| Emitter-base voltage | VEBO |  |  | 3 | V |  | 1 |
| Collector current | IC |  |  | 50 | mA |  | 1 |
| Collector power dissipation | PC |  |  | 0.2 | W |  | 1 |
| Junction temperature | Tj |  |  | 150 | °C |  | 1 |
| Storage temperature | Tstg | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `L2SC3837LT1G`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `l2sc3837lt1g-etched.step` / `l2sc3837lt1g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `l2sc3837lt1g.step` / `l2sc3837lt1g.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [LRC datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588945660347355136) (2 pp, sha256 `4e4e6893f4fb9db3`, retrieved 2026-10-18, 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/l2sc3837lt1g-datasheet.pdf)