# FC1404

**GUOXIN JIAPIN SEMICONDUCTOR** · Bipolar (BJT) · SOT-323

FC1404 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 terminal of the NPN transistor; the datasheet gives the emitter-base breakdown limit VEBO of 1.5 V max and the base-emitter leakage IEBO of 0.1 µA max at VEB=1V. |
| 2 | E | passive | Emitter terminal of the NPN transistor, the reference for the VCE=5V, IC=20mA test conditions and the 50 mA max collector current rating. |
| 3 | C | passive | Collector terminal of the NPN transistor; the datasheet limits are VCBO 15 V, VCEO 9 V and IC 50 mA, with PC 100 mW max total power dissipation. |

## 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 |
|---|---|---|---|---|---|---|---|
| 集电极基极击穿电压 (Collector-base breakdown voltage) | VCBO | 15 |  |  | V | IC=1.0µA | 2 |
| 集电极基极漏电流 (Collector-base cutoff current) | ICBO |  |  | 0.1 | µA | VCB=10V | 2 |
| 发射极基极漏电流 (Emitter-base cutoff current) | IEBO |  |  | 0.1 | µA | VEB=1V | 2 |
| 直流增益 (DC current gain) | hFE | 90 | 150 | 250 |  | VCE=5V，IC=20mA | 2 |
| 增益带宽乘积 (Transition frequency) | fT | 7 | 9 |  | GHz | VCE=5V，IC=20mA | 2 |
| 输出反馈电容 (Feedback capacitance) | Cre |  | 0.65 | 1 | pF | VCB=10V,IE=0mA, f=1MHz | 2 |
| 噪声因子 (Noise figure) | NF |  | 1.6 | 2.5 | dB | VCE=5V, IC=5mA, f=0.9GHz | 2 |
| 插入功率增益 (Insertion power gain) | /S21e/2 |  | 13.3 |  | dB | VCE=5V,IC=5mA, f=0.9GHz | 2 |
| 插入功率增益 (Insertion power gain) | /S21e/2 |  | 13.5 |  | dB | VCE=5V,IC=20mA,f=0.9GHz | 2 |
| 集电极基极击穿电压 (Collector-base voltage) | VCBO |  |  | 15 | V |  | 1 |
| 集电极发射极击穿电压 (Collector-emitter voltage) | VCEO |  |  | 9 | V |  | 1 |
| 发射极基极击穿电压 (Emitter-base voltage) | VEBO |  |  | 1.5 | V |  | 1 |
| 集电极电流 (Collector current) | IC |  |  | 50 | mA |  | 1 |
| 功耗 (Power dissipation) | PC |  |  | 100 | mW |  | 1 |
| 结温度 (Junction temperature) | Tj |  |  | 150 | ℃ |  | 1 |
| 存储温度 (Storage temperature) | Tstg | -65 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `FC1404`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `fc1404-etched.step` / `fc1404-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fc1404.step` / `fc1404.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GUOXIN JIAPIN SEMICONDUCTOR datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589040528256077824) (5 pp, sha256 `25490a344f039968`, 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`, 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/fc1404-datasheet.pdf)