# BZX84C22A

**Shandong Jingdao Microelectronics** · Zener Diodes · SOT-23

BZX84C22A from Shandong Jingdao Microelectronics, 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 | Anode of the single zener diode (Suffix A), connected internally to pin 3 through the diode. |
| 2 | NC | unconnected | No internal connection in the single-diode Suffix A device; pin 2 is not shown connected in the package diagram. |
| 3 | K | passive | Cathode of the single zener diode (Suffix A); zener voltage 22V nominal (20.8V to 22.44V... see review) at IZT 5mA, Ptot max 350mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shandong Jingdao Microelectronics |
| 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 (VZT at IZT) | VZT | 20.8 | 22 | 23.3 | V | at IZT = 5 mA; VZT tested with pulses (20 ms) | 3 |
| Zener dynamic impedance | ZZT |  |  | 55 | Ω | at IZT = 5 mA | 3 |
| Reverse current | IR |  |  | 0.1 | µA | at VR = 17 V | 3 |
| Zener voltage tolerance (grade C) |  | -5 |  | 5 | % | Tolerance grade C (±5%) per footnote (3) | 3 |
| Power dissipation | Ptot |  |  | 350 | mW | Ta = 25 °C | 1 |
| Operating and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `BZX84C22A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84c22a-etched.step` / `bzx84c22a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c22a.step` / `bzx84c22a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590900770583617536) (4 pp, sha256 `595e68d92b601ba8`, retrieved 2026-10-17, 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/bzx84c22a-datasheet.pdf)