component
FCS520
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
markdownFCS520
GUOXIN JIAPIN SEMICONDUCTOR · Bipolar (BJT) · SOT-323
FCS520 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 | input | Base of the FCS520 NPN transistor; the datasheet gives emitter-base breakdown VEBO of 2 V max and VEB=1 V as the test condition for IEBO (0.1 µA max). |
| 2 | E | passive | Emitter of the FCS520 NPN transistor; the emitter-base breakdown voltage VEBO is rated at 2 V. |
| 3 | C | passive | Collector of the FCS520 NPN transistor; collector-emitter breakdown VCEO is rated at 12 V, collector current IC at 100 mA, and power dissipation PC at 150 mW. |
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 (absolute maximum) | VCBO | 20 | V | TA=25℃ | 1 | ||
| Collector-emitter breakdown voltage (absolute maximum) | VCEO | 12 | V | TA=25℃ | 1 | ||
| Emitter-base breakdown voltage (absolute maximum) | VEBO | 2 | V | TA=25℃ | 1 | ||
| Collector current | IC | 100 | mA | TA=25℃ | 1 | ||
| Power dissipation | PC | 150 | mW | TA=25℃ | 1 | ||
| Junction temperature | Tj | 150 | ℃ | TA=25℃ | 1 | ||
| Storage temperature | Tstg | -65 | 150 | ℃ | TA=25℃ | 1 | |
| Collector-base breakdown voltage | VCBO | 20 | 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=6V，IC=20mA | 2 | |
| Noise figure | NF | 1.5 | 2 | dB | VCE=6V,IC=5mA,f=1GHz | 2 | |
| Output feedback capacitance | Cre | 0.4 | 0.7 | pF | VCB=6V,IE=0mA,f=1MHz | 2 | |
| Transition frequency | fT | 8 | GHz | VCE=6V,IC=20mA,f=1GHz | 2 | ||
| Power gain | /S21e/2 | 12.5 | dB | VCE=6V,IC=20mA,f=1GHz | 2 |
CAD (KiCad official)
- Symbol:
FCS520 - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
fcs520-etched.step/fcs520-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);fcs520.step/fcs520.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GUOXIN JIAPIN SEMICONDUCTOR datasheet (5 pp, sha256
c223fa9bce5f26de, retrieved 2026-10-18, 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).