# AD-BZX84C15

**Changjing** · Zener Diodes · SOT-23

AD-BZX84C15 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 in the equivalent circuit connected to the diode's anode side; Zener voltage 15V nominal (13.8V min to 15.6V max) at IZT = 5mA. |
| 2 | NC | unconnected | No internal connection; the equivalent circuit shows pin 2 not connected to the diode. |
| 3 | K | passive | Cathode of the Zener diode, shown in the equivalent circuit connected to the diode's cathode (bar) side. |

## 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 | 13.8 | 15 | 15.6 | V | IZT = 5mA, pulsed 300µs | 2 |
| Test current | IZT |  | 5 |  | mA |  | 2 |
| Maximum Zener impedance | ZZT |  |  | 30 | Ω | @ IZT, f = 1kHz | 2 |
| Maximum Zener impedance at knee | ZZK |  |  | 200 | Ω | @ IZK = 1.0mA, f = 1kHz | 2 |
| Maximum reverse current | IR |  |  | 0.1 | µA | VR = 10.5V | 2 |
| Temperature coefficient of Zener voltage |  | 9.2 |  | 13 | mV/°C | IZT = 5mA | 2 |
| Forward voltage | VF |  |  | 0.9 | V | IF = 10mA | 1 |
| Power dissipation | PD |  |  | 300 | mW | Tj = 25°C | 1 |
| Thermal resistance junction to ambient | RθJA |  | 417 |  | °C/W | 1 inch2 FR-4 board, 1oz single-side copper, still air, Ta = 25℃ | 1 |
| Operating junction and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |

## CAD (KiCad official)

- Symbol: `AD-BZX84C15`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ad-bzx84c15-etched.step` / `ad-bzx84c15-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-bzx84c15.step` / `ad-bzx84c15.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](docs/ad-bzx84c15-datasheet.pdf) (6 pp, sha256 `64029d1d4669654a`, 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-bzx84c15-datasheet.pdf)