component
2SC554
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-89-3L. 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
markdown2SC554
Changjing · Bipolar (BJT) · SOT-89-3L
2SC554 from Changjing, in a SOT-89-3L. 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 NPN transistor, with emitter-base breakdown V(BR)EBO of 6 V minimum and VEBO rated at 6 V. |
| 2 | COLLECTOR | passive | Collector terminal, rated for VCBO and VCEO of 100 V, collector current IC of 2 A, and collector power dissipation PC of 500 mW. |
| 3 | EMITTER | passive | Emitter terminal, the reference for base and collector, with emitter-base rating VEBO of 6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-89-3L |
| 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 | 100 | V | IC=0.1mA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | 100 | V | IC=1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | 6 | V | IE=0.1mA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | 1 | µA | VCB=100V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | 1 | µA | VEB=4V, IC=0 | 1 | ||
| DC current gain | hFE | 82 | 270 | VCE=3V, IC=100mA | 1 | ||
| Collector-emitter saturation voltage | VCE(sat) | 0.2 | V | IC=500mA, IB=25mA | 1 | ||
| Collector-emitter saturation voltage | VCE(sat) | 0.3 | V | IC=1A, IB=50mA | 1 | ||
| Transition frequency | fT | 30 | MHz | VCE=5V, IC=100mA | 1 | ||
| Collector output capacitance | Cob | 16 | pF | VCB=10V, IE=0, f=1MHz | 1 | ||
| Collector-Base Voltage | VCBO | 100 | V | Ta=25℃ unless otherwise noted | 1 | ||
| Collector-Emitter Voltage | VCEO | 100 | V | Ta=25℃ unless otherwise noted | 1 | ||
| Emitter-Base Voltage | VEBO | 6 | V | Ta=25℃ unless otherwise noted | 1 | ||
| Collector Current | IC | 2 | A | Ta=25℃ unless otherwise noted | 1 | ||
| Collector Power Dissipation | PC | 500 | mW | Ta=25℃ unless otherwise noted | 1 | ||
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal Resistance From Junction To Ambient | RθJA | 250 | ℃/W | Ta=25℃ unless otherwise noted | 1 |
CAD (KiCad official)
- Symbol:
2SC554 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3L (KiCad packages3D, STEP)
- 3D model files:
2sc554-etched.step/2sc554-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sc554.step/2sc554.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
e93797551eb90486, retrieved 2026-10-18, 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).