# BZX84B15Q

**Yangzhou Yangjie Elec Tech** · Zener Diodes · SOT-23

BZX84B15Q from Yangzhou Yangjie Elec Tech, 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 to the diode symbol on the page 1 schematic. |
| 2 | NC | unconnected | No internal connection is drawn for this pin in the page 1 schematic symbol. |
| 3 | K | passive | Cathode of the Zener diode, shown connected to the diode symbol on the page 1 schematic. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| 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 (min) | Vz | 14.7 |  |  | V | Izt = 5 mA | 2 |
| Zener voltage (typ) | Vz |  | 15 |  | V | Izt = 5 mA | 2 |
| Zener voltage (max) | Vz |  |  | 15.3 | V | Izt = 5 mA | 2 |
| Maximum Zener impedance | Zzt |  |  | 30 | Ω | IZt = 5 mA | 2 |
| Maximum Zener knee impedance | Zzk |  |  | 200 | Ω | Izk = 1.0 mA | 2 |
| Maximum reverse leakage current | IR |  |  | 0.1 | μA | VR = 10.5 V | 2 |
| Typical temperature coefficient (min) |  | 9.2 |  |  | mV/℃ | IZTC = 5 mA | 2 |
| Typical temperature coefficient (max) |  |  |  | 13 | mV/℃ | IZTC = 5 mA | 2 |
| Power dissipation | PD |  |  | 350 | mW | Ta=25℃ | 1 |
| Storage temperature range | Tstg | -55 |  | 150 | °C |  | 1 |
| Junction temperature | TJ | -55 |  | 150 | °C |  | 1 |
| Maximum forward voltage | VF |  |  | 0.9 | V | IF=10mAdc | 1 |
| Thermal resistance junction to ambient air | RθJA |  | 357 |  | °C /W |  | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| housing |  | black | 4. Body color: Black | 5 |
| contacts |  | tin | ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 | 1 |

## CAD (KiCad official)

- Symbol: `BZX84B15Q`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84b15q-etched.step` / `bzx84b15q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84b15q.step` / `bzx84b15q.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](docs/bzx84b15q-datasheet.pdf) (7 pp, sha256 `cddc881ab078e8bc`, retrieved 2026-11-05, 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/bzx84b15q-datasheet.pdf)