component
2SC2859
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdown2SC2859
Changjing · Bipolar (BJT) · SOT-23
2SC2859 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 2SC2859 NPN transistor; the datasheet rates emitter-base voltage VEBO at 5 V and collector current IC at 500 mA maximum. |
| 2 | EMITTER | passive | Emitter terminal of the 2SC2859 NPN transistor; emitter-base breakdown voltage V(BR)EBO is specified at 5 V minimum. |
| 3 | COLLECTOR | passive | Collector terminal of the 2SC2859 NPN transistor; the datasheet limits collector-base voltage VCBO to 35 V and collector-emitter voltage VCEO to 30 V. |
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 Voltage | VCBO | 35 | V | Ta=25℃ | 1 | ||
| Collector-Emitter Voltage | VCEO | 30 | V | Ta=25℃ | 1 | ||
| Emitter-Base Voltage | VEBO | 5 | V | Ta=25℃ | 1 | ||
| Collector Current | IC | 500 | mA | Ta=25℃ | 1 | ||
| Collector Power Dissipation | PC | 150 | mW | Ta=25℃ | 1 | ||
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | 150 | ℃ | 1 | ||
| Collector-base breakdown voltage | V(BR)CBO | 35 | V | IC=100µA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | 30 | V | IC=1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | 5 | V | IE=100µA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | 0.1 | µA | VCB=35V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | 0.1 | µA | VEB=5V, IC=0 | 1 | ||
| DC current gain hFE(1) | hFE(1) | 70 | 400 | VCE=1V, IC=100mA | 1 | ||
| DC current gain hFE(2) | hFE(2) | 25 | VCE=6V, IC=400mA | 1 | |||
| Collector-emitter saturation voltage | VCE(sat) | 0.25 | V | IC=100mA, IB=10mA | 1 | ||
| Base-emitter voltage | VBE | 1 | V | VCE=1V,IC=100mA | 1 | ||
| Transition frequency | fT | 300 | MHz | VCE=6V,IC=20mA | 1 | ||
| Collector output capacitance | Cob | 7 | pF | VCB=6V, IE=0, f=1MHz | 1 | ||
| Thermal Resistance From Junction To Ambient | RΘJA | 833 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
2SC2859 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
2sc2859-etched.step/2sc2859-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sc2859.step/2sc2859.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
042959d20c348d48, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).