# 2SC2859-Y-TP

**MCC Micro Commercial Components** · Bipolar (BJT) · SOT-23

2SC2859-Y-TP from MCC Micro Commercial Components, 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 of the NPN transistor, with Emitter-Base Voltage VEBO rated at 5 V and base-emitter saturation characterized at IB = 10 mA. |
| 2 | EMITTER | passive | Emitter of the NPN transistor, with Emitter-Base Voltage VEBO rated at 5 V and Emitter-Base Cutoff Current IEBO at most 0.1 µA at VEB = 5 V. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor, rated for Collector-Emitter Voltage VCEO of 30 V and Continuous Collector Current IC of 500 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MCC Micro Commercial Components |
| 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-Emitter Breakdown Voltage | V(BR)CEO | 30 |  |  | V | IC=1mA, IB=0 | 2 |
| Collector-Base Breakdown Voltage | V(BR)CBO | 35 |  |  | V | IC=100µA, IE=0 | 2 |
| Emitter-Base Breakdown Voltage | V(BR)EBO | 5 |  |  | V | IE=100µA, IC=0 | 2 |
| Collector-Base Cutoff Current | ICBO |  |  | 0.1 | µA | VCB=35V, IE=0 | 2 |
| Emitter-Base Cutoff Current | IEBO |  |  | 0.1 | µA | VEB=5V, IC=0 | 2 |
| DC Current Gain, rank Y (hFE(1)) | hFE(1) | 120 |  | 240 |  | VCE=1V, IC=100mA | 2 |
| DC Current Gain (hFE(2)) | hFE(2) | 25 |  |  |  | VCE=6V, IC=400mA | 2 |
| Collector-Emitter Saturation Voltage | VCE(sat) |  |  | 0.3 | V | IC=100mA, IB=10mA | 2 |
| Base-Emitter Voltage | VBE |  |  | 1 | V | VCE=1V, IC=100mA | 2 |
| Collector Output Capacitance | Cob |  |  | 7 | pF | VCB=6V, IE=0, f=1MHz | 2 |
| Power Dissipation | PD |  |  | 150 | mW | Maximum Ratings @ 25°C | 1 |
| Continuous Collector Current | IC |  |  | 500 | mA | Maximum Ratings @ 25°C | 1 |
| Collector-Emitter Voltage | VCEO |  |  | 30 | V | Maximum Ratings @ 25°C | 1 |
| Emitter-Base Voltage | VEBO |  |  | 5 | V | Maximum Ratings @ 25°C | 1 |
| Collector-Base Voltage | VCBO |  |  | 35 | V | Maximum Ratings @ 25°C | 1 |
| Operating Junction Temperature Range | TJ | -55 |  | 150 | ℃ |  | 1 |
| Storage Temperature Range | TSTG | -55 |  | 150 | ℃ |  | 1 |
| Thermal Resistance, Junction to Ambient | RθJA |  |  | 833 | ℃/W | Junction to Ambient | 1 |

## CAD (KiCad official)

- Symbol: `2SC2859-Y-TP`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `2sc2859-y-tp-etched.step` / `2sc2859-y-tp-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sc2859-y-tp.step` / `2sc2859-y-tp.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MCC Micro Commercial Components datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604325289606729728) (4 pp, sha256 `ce4cd8715c33c86d`, 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/2sc2859-y-tp-datasheet.pdf)