component
FC4901
Public Made by Adomby adom
GUOXIN JIAPIN SEMICONDUCTOR Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownFC4901
GUOXIN JIAPIN SEMICONDUCTOR · Bipolar (BJT) · SOT-323
FC4901 from GUOXIN JIAPIN SEMICONDUCTOR, in a SOT-323. 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 | B | passive | Base of the NPN transistor (管脚 1：基极); the datasheet gives no pin-specific limit, and the absolute maximum emitter-base breakdown voltage VEBO is 1.5 V. |
| 2 | E | passive | Emitter of the NPN transistor (管脚 2：发射极); the datasheet gives no pin-specific limit, and the absolute maximum collector current IC is 50 mA. |
| 3 | C | passive | Collector of the NPN transistor (管脚 3：集电极); the datasheet gives no pin-specific limit, and the absolute maximum collector-emitter breakdown voltage VCEO is 9 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GUOXIN JIAPIN SEMICONDUCTOR |
| Package | SOT-323 |
| 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 | VCBO | 15 | V | IC=1.0µA | 2 | ||
| Collector-base leakage current | ICBO | 0.1 | µA | VCB=10V | 2 | ||
| Emitter-base leakage current | IEBO | 0.1 | µA | VEB=1V | 2 | ||
| DC current gain | hFE | 90 | 150 | 250 | VCE=5V，IC=20mA | 2 | |
| Gain-bandwidth product | fT | 7 | 9 | GHz | VCE=5V，IC=20mA | 2 | |
| Output feedback capacitance | Cre | 0.65 | 1 | pF | VCB=10V,IE=0mA, f=1MHz | 2 | |
| Noise figure | NF | 1.6 | 2.5 | dB | VCE=5V, IC=5mA, f=0.9GHz | 2 | |
| Collector-base voltage (absolute maximum) | VCBO | 15 | V | TA=25℃ | 1 | ||
| Collector-emitter voltage (absolute maximum) | VCEO | 9 | V | TA=25℃ | 1 | ||
| Emitter-base voltage (absolute maximum) | VEBO | 1.5 | V | TA=25℃ | 1 | ||
| Collector current (absolute maximum) | IC | 50 | mA | TA=25℃ | 1 | ||
| Power dissipation (absolute maximum) | PC | 100 | mW | TA=25℃ | 1 | ||
| Junction temperature (absolute maximum) | Tj | 150 | ℃ | TA=25℃ | 1 | ||
| Storage temperature | Tstg | -65 | 150 | ℃ | TA=25℃ | 1 |
CAD (KiCad official)
- Symbol:
FC4901 - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
fc4901-etched.step/fc4901-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fc4901.step/fc4901.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GUOXIN JIAPIN SEMICONDUCTOR datasheet (5 pp, sha256
c777cc4ff95bd52f, retrieved 2026-10-19, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).