# BZX84C9V1A

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

BZX84C9V1A 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 and footprint from KiCad-official CAD; the 3D model is generated from the datasheet's package dimensions.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | A | passive | Anode of the single zener diode (Suffix A), per the package diagram where the diode symbol runs from pin 1 to pin 3. |
| 2 | NC | unconnected | Not connected internally in the single-diode Suffix A device; the diagram shows no internal connection to pin 2. |
| 3 | K | passive | Cathode of the single zener diode (Suffix A), connected to the diode's cathode side in the package diagram. |

## 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 |
|---|---|---|---|---|---|---|---|
| Total power dissipation | Ptot |  |  | 350 | mW | Ta = 25 °C | 1 |
| Operating and storage temperature range | Tj, Tstg | -55 |  | 150 | °C |  | 1 |
| Zener voltage (BZX84C9V1A) | VZT | 8.5 | 9.1 | 9.6 | V | at IZT = 5 mA; VZT tested with pulses (20 ms) | 3 |
| Zener voltage tolerance (suffix C series) |  | -5 |  | 5 | % | Footnote (3): C: ±5% | 2 |
| Dynamic impedance | ZZT |  |  | 30 | Ω | at IZT = 5 mA | 3 |
| Reverse current | IR |  |  | 0.5 | μA | at VR = 6 V | 3 |

## CAD (land: KiCad; 3D: generated from the datasheet)

- Symbol: `BZX84C9V1A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23, generated on the KiCad land (body 1.3 x 2.9 mm, terminals on the pads, 1.0 mm tall, datasheet A, midpoint of min and max). KiCad's stock model for this land is taller than the datasheet allows, so the model is generated from the datasheet drawing; the dimensions come from the datasheet drawing where it was read and are defaults otherwise (see provenance.model_3d_generated), not the manufacturer's CAD (STEP)
- 3D model files: `bzx84c9v1a-etched.step` / `bzx84c9v1a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c9v1a.step` / `bzx84c9v1a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shandong Jingdao Microelectronics datasheet](docs/bzx84c9v1a-datasheet.pdf) (4 pp, sha256 `15f9741a37e514a5`, retrieved 2026-11-12, 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:** land: KiCad official libraries (CC-BY-SA 4.0); 3D: generated from the datasheet's package dimensions (provenance.model_3d_generated).

[Datasheet PDF](docs/bzx84c9v1a-datasheet.pdf)