# FC1406

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

FC1406 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 FC1406 NPN high-frequency low-noise transistor; the datasheet gives no separate pin limit for this terminal beyond the device absolute maximum ratings (VCBO 20 V, VCEO 10 V, VEBO 1.5 V, IC 35 mA, PC 150 mW). |
| 2 | E | passive | Emitter of the FC1406 NPN transistor; the datasheet gives no separate pin limit for this terminal beyond the device absolute maximum ratings (VCBO 20 V, VCEO 10 V, VEBO 1.5 V, IC 35 mA, PC 150 mW). |
| 3 | C | passive | Collector of the FC1406 NPN transistor; the datasheet gives no separate pin limit for this terminal beyond the device absolute maximum ratings (VCBO 20 V, VCEO 10 V, VEBO 1.5 V, IC 35 mA, PC 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 |
|---|---|---|---|---|---|---|---|
| DC current gain | hFE | 60 | 150 | 250 |  | VCE=3V, IC=5mA | 2 |
| Transition frequency | fT |  | 8 | 8.5 | GHz | VCE=3V,IC=5mA,f=2GHz | 2 |
| Output feedback capacitance | Cre |  | 0.65 | 1 | pF | VCB=10V,IE=0mA,f=1MHz | 2 |
| 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 |
| Collector-base breakdown voltage (absolute maximum) | VCBO |  |  | 20 | V |  | 1 |
| Collector-emitter breakdown voltage (absolute maximum) | VCEO |  |  | 10 | V |  | 1 |
| Emitter-base breakdown voltage (absolute maximum) | VEBO |  |  | 1.5 | V |  | 1 |
| Collector current (absolute maximum) | IC |  |  | 35 | mA |  | 1 |
| Power dissipation (absolute maximum) | PC |  |  | 150 | mW |  | 1 |
| Junction temperature (absolute maximum) | Tj |  |  | 150 | ℃ |  | 1 |
| Storage temperature range (absolute maximum) | Tstg | -65 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `FC1406`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `fc1406-etched.step` / `fc1406-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `fc1406.step` / `fc1406.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/8590233658603692032) (5 pp, sha256 `958379060ac2eae8`, 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`, 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/fc1406-datasheet.pdf)