# BZX84B9V1

**POPPULA** · Zener Diodes · SOT-23

BZX84B9V1 from POPPULA, 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 9.1 V zener (nominal Vz 9.1 V, 8.92 to 9.28 V at IZT = 5 mA); connects to the diode symbol via the left bottom pin in the top-view drawing. |
| 2 | NC | unconnected | No internal connection; the right bottom pin in the top-view pin configuration drawing is not wired to the diode symbol. |
| 3 | K | passive | Cathode of the zener diode, the single top pin in the top-view drawing; 350 mW power dissipation, -55 to 150 °C operating and storage temperature. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | POPPULA |
| 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 (nominal 9.1 V, min 8.92 V, max 9.28 V) | Vz | 8.92 | 9.1 | 9.28 | V | @ IZT 5 mA (row test current) | 3 |
| Max. Zener impedance | ZZT |  |  | 15 | Ohm | @ IZT = 5 mA | 3 |
| Max. Zener impedance | ZZK |  |  | 100 | Ohm | @ IZK = 1 mA | 3 |
| Max. reverse leakage current | IR |  |  | 0.5 | µA | @ VR = 6.0 V | 3 |
| Maximum forward voltage | VF |  |  | 0.9 | V | @ IF=10mA | 1 |
| Power dissipation | P(AV) |  |  | 350 | mW |  | 1 |
| Operating and storage temperature | TJ, Tstg | -55 |  | 150 | ℃ |  | 1 |
| Storage temperature range | Tstg | -55 |  | 150 | ℃ |  | 1 |
| Peak forward surge current | IFSM |  |  | 2 | A |  | 1 |
| Thermal resistance junction to ambient | Rj |  |  | 357 | ℃/W |  | 1 |

## CAD (KiCad official)

- Symbol: `BZX84B9V1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84b9v1-etched.step` / `bzx84b9v1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84b9v1.step` / `bzx84b9v1.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [POPPULA datasheet](docs/bzx84b9v1-datasheet.pdf) (5 pp, sha256 `d753f2ee48b047be`, retrieved 2026-11-04, 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/bzx84b9v1-datasheet.pdf)