# BZX84C10Q

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

BZX84C10Q 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 (pin 1 on the internal diagram); the Zener voltage of BZX84C10Q is 9.4V min, 10V typ, 10.6V max at IZT = 5mA. |
| 2 | NC | unconnected | Pin 2 is drawn with no internal connection to the diode on the package diagram. |
| 3 | K | passive | Cathode of the Zener diode (pin 3 on the internal diagram); power dissipation is 350mW max and maximum regulator current is PD/VZ. |

## 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 | Vz | 9.4 | 10 | 10.6 | V | Izt=5 mA | 2 |
| Maximum Dynamic Impedance at Izt | Zzt |  |  | 20 | Ω | IZt=5 mA | 2 |
| Maximum Dynamic Impedance at Izk | Zzk |  |  | 150 | Ω | Izk=1.0 mA | 2 |
| Reverse Leakage Current | IR |  |  | 0.2 | uA | VR=7.0 V | 2 |
| Typical Temperature Coefficient |  | 4.5 |  | 8 | mV/℃ | IZTC=5 mA | 2 |
| Maximum Forward Voltage | VF |  |  | 0.9 | V | IF=10mAdc | 1 |
| Power Dissipation | PD |  |  | 350 | mW | Ta=25℃ | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 1 |
| Junction Temperature | TJ | -55 |  | 150 | °C |  | 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: `BZX84C10Q`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84c10q-etched.step` / `bzx84c10q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c10q.step` / `bzx84c10q.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603191405380579328) (6 pp, sha256 `6ee6bf4524a8b88e`, retrieved 2026-10-18, 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/bzx84c10q-datasheet.pdf)