# 2SC3052

**Changjing** · Bipolar (BJT) · SOT-23

2SC3052 from Changjing, 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 NPN transistor, with the emitter-base voltage rating VEBO limited to 6 V. |
| 2 | EMITTER | passive | Emitter terminal of the NPN transistor; the emitter-base breakdown voltage V(BR)EBO is specified at 6 V with IC=0. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN transistor, rated for VCBO and VCEO of 50 V, continuous collector current IC of 0.2 A, and collector power dissipation PC of 150 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 | V(BR)CBO | 50 |  |  | V | IC = 100 μA, IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | 50 |  |  | V | IC = 100 μA, IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | 6 |  |  | V | IE= 100 μA, IC=0 | 1 |
| Collector cut-off current | ICBO |  |  | 0.1 | μA | VCB= 50 V, IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | 0.1 | μA | VEB= 6V, IC=0 | 1 |
| DC current gain (rank range E to G) | hFE(1) | 150 |  | 800 |  | VCE= 6V, IC= 1mA | 1 |
| DC current gain | hFE(2) | 50 |  |  |  | VCE= 6V, IC= 0.1mA | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | 0.3 | V | IC=100mA, IB= 10mA | 1 |
| Base-emitter saturation voltage | VBE(sat) |  |  | 1 | V | IC= 100mA, IB= 10mA | 1 |
| Transition frequency | fT | 180 |  |  | MHz | VCE= 6V, IC= 10mA | 1 |
| Collector output capacitance | Cob |  |  | 4 | pF | VCB=6V, IE=0, f=1MHz | 1 |
| Noise figure | NF |  |  | 15 | dB | VCE=6V,IE=-0.1mA, f=1KHz, RG=2KΩ | 1 |
| Collector-base voltage | VCBO |  |  | 50 | V | Ta=25℃ | 1 |
| Collector-emitter voltage | VCEO |  |  | 50 | V | Ta=25℃ | 1 |
| Emitter-base voltage | VEBO |  |  | 6 | V | Ta=25℃ | 1 |
| Collector current (continuous) | IC |  |  | 0.2 | A | Ta=25℃ | 1 |
| Collector power dissipation | PC |  |  | 150 | mW | Ta=25℃ | 1 |
| Operation junction and storage temperature range | TJ,Tstg | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `2SC3052`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `2sc3052-etched.step` / `2sc3052-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sc3052.step` / `2sc3052.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588946693572608000) (4 pp, sha256 `e0c5cf7290d1736b`, retrieved 2026-10-17, 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/2sc3052-datasheet.pdf)