# BZX84C5V1

**HXY MOSFET** · Zener Diodes · SOT-23

BZX84C5V1 from HXY MOSFET, in a SOT-23. 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 | A | passive | Zener anode; BZX84C5V1 Vz 4.8-5.4V (5.1V nom) at IZT=5mA, 300mW max power dissipation, VF 0.9V max at IF=10mA. |
| 2 | NC | unconnected | No internal connection in the single-Zener SOT-23 package. |
| 3 | K | passive | Zener cathode; BZX84C5V1 IR 2uA max at VR=2.0V, ZZT 60 ohm max at IZT=5mA, junction temperature -40 to +125°C. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | HXY MOSFET |
| Package | SOT-23 |
| Category | Diodes |
| 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 |
|---|---|---|---|---|---|---|---|
| Zener voltage | VZ | 4.8 | 5.1 | 5.4 | V | @ IZT=5mA | 2 |
| Temperature coefficient of Zener voltage |  | -2.7 |  | 1.2 | mV/°C | @ IZT=5mA | 2 |
| Maximum Zener impedance | ZZT |  |  | 60 | Ω | @ IZT=5mA | 2 |
| Maximum Zener impedance | ZZK |  |  | 480 | Ω | @ IZK=1.0 mA | 2 |
| Maximum reverse current | IR |  |  | 2 | μA | @ VR=2.0 V | 2 |
| Forward voltage | VF |  |  | 0.9 | V | @ IF=10mA | 1 |
| Power dissipation | Pd |  |  | 300 | mW | Note 1: device terminals kept at ambient temperature | 1 |
| Thermal resistance, junction to ambient | RΘJA |  |  | 625 | °C/W |  | 1 |
| Operation junction temperature range | TJ | -40 |  | 125 | °C |  | 1 |
| Storage temperature range | TSTG | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `BZX84C5V1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84c5v1-etched.step` / `bzx84c5v1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c5v1.step` / `bzx84c5v1.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/8778326562779885568) (6 pp, sha256 `0ea6ad07faccc976`, retrieved 2026-11-12, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/bzx84c5v1-datasheet.pdf)