# AD-BZX84B5V6

**Changjing** · Zener Diodes · SOT-23

AD-BZX84B5V6 from Changjing, 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 Zener diode, shown connected through the diode symbol to pin 3, with a nominal Zener voltage of 5.6 V (5.49 V to 5.71 V at IZT = 5 mA) for the AD-BZX84B5V6. |
| 2 | NC | unconnected | Not connected; pin 2 is drawn as an isolated terminal in the SOT-23 symbol and has no internal connection to the diode. |
| 3 | K | passive | Cathode of the Zener diode, shown connected through the diode symbol to pin 1, with 300 mW maximum power dissipation and a -55 to 150 °C junction and storage temperature range. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| 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 | 5.49 | 5.6 | 5.71 | V | IZT=5 mA | 2 |
| Maximum Zener Impedance | ZZT |  |  | 40 | Ω | IZT=5 mA, f=1kHz | 2 |
| Maximum Zener Impedance (knee) | ZZK |  |  | 400 | Ω | IZK=1.0 mA, f=1kHz | 2 |
| Maximum Reverse Current | IR |  |  | 1 | μA | VR=2.0 V | 2 |
| Typical Temperature Coefficient |  | -2 |  | 2.5 | mV/°C | IZT=5 mA | 2 |
| Forward voltage | VF |  |  | 0.9 | V | IF=10mA | 1 |
| Power dissipation | PD |  |  | 300 | mW | Tj=25°C | 1 |
| Thermal resistance from junction to ambient | RθJA |  |  | 417 | °C/W |  | 1 |
| Operating junction and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Zener test current | IZT |  | 5 |  | mA |  | 2 |

## CAD (KiCad official)

- Symbol: `AD-BZX84B5V6`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ad-bzx84b5v6-etched.step` / `ad-bzx84b5v6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-bzx84b5v6.step` / `ad-bzx84b5v6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/ad-bzx84b5v6-datasheet.pdf) (7 pp, sha256 `226d559e89d08016`, retrieved 2026-10-31, 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/ad-bzx84b5v6-datasheet.pdf)