# PBSS4520X-HXY

**HXY MOSFET** · Bipolar (BJT) · SOT-89

PBSS4520X-HXY from HXY MOSFET, in a SOT-89. 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 NPN transistor; emitter-base voltage is rated at 6 V maximum (VEBO) and emitter cut-off current is 0.5 µA max at VEB=5V. |
| 2 | C | passive | Collector of the NPN transistor (the center lead, also the SOT-89 tab); rated VCEO 20 V, VCBO 50 V and 5 A continuous collector current. |
| 3 | E | passive | Emitter of the NPN transistor; total power dissipation is 500 mW and junction temperature range is -55 to 150 °C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOT-89 |
| 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 voltage | VCBO |  |  | 50 | V |  | 1 |
| Collector-emitter voltage | VCEO |  |  | 20 | V |  | 1 |
| Emitter-base voltage | VEBO |  |  | 6 | V |  | 1 |
| Collector current, continuous | IC |  |  | 5 | A |  | 1 |
| Collector power dissipation | PC |  |  | 500 | mW |  | 1 |
| Operation junction and storage temperature range | TJ,Tstg | -55 |  | 150 | °C |  | 1 |
| Collector-base breakdown voltage | V(BR)CBO | 50 |  |  | V | IC=50μA,IE=0 | 1 |
| Collector-emitter breakdown voltage | V(BR)CEO | 20 |  |  | V | IC=1mA,IB=0 | 1 |
| Emitter-base breakdown voltage | V(BR)EBO | 6 |  |  | V | IE=50μA | 1 |
| Collector cut-off current | ICBO |  |  | 0.5 | μA | VCB=40V,IE=0 | 1 |
| Emitter cut-off current | IEBO |  |  | 0.5 | μA | VEB=5V,IC=0 | 1 |
| DC current gain | hFE | 180 |  | 390 |  | VCE=2V,IC=0.5A | 1 |
| Collector-emitter saturation voltage | VCE(sat) |  |  | 1 | V | IC=4A,IB=100mA | 1 |
| Transition frequency | fT |  | 150 |  | MHz | VCE=6V,IC=50mA,f=100MHz | 1 |
| Collector output capacitance | Cob |  | 30 |  | pF | VCB=20V,IE=0,f=1MHz | 1 |

## CAD (KiCad official)

- Symbol: `PBSS4520X-HXY`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `pbss4520x-hxy-etched.step` / `pbss4520x-hxy-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pbss4520x-hxy.step` / `pbss4520x-hxy.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [HXY MOSFET datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604449408155070464) (3 pp, sha256 `b077cef01ded93b8`, retrieved 2026-10-20, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/pbss4520x-hxy-datasheet.pdf)