# BZX84C36

**FOSAN** · Zener Diodes · SOT-23

BZX84C36 from FOSAN, 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 single Zener diode, shown connected through the diode to pin 3; Zener voltage VZ is 34.0 to 38.0 V (36 V nominal) at IZ=2 mA. |
| 2 | NC | unconnected | Not connected internally; the internal configuration drawing shows pin 2 with no connection to the diode. |
| 3 | K | passive | Cathode of the single Zener diode, connected through the diode to pin 1; power dissipation is 300 mW max at Ta=25℃. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | FOSAN |
| 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 VZ, min/max at IZ) | VZ | 34 | 36 | 38 | V | IZ = 2 mA | 2 |
| Reverse leakage current | IR |  |  | 0.05 | μA | VR = 25.2 V | 2 |
| Zener impedance (ZZT) | ZZT |  |  | 90 | ohm | IZ = 2 mA | 2 |
| Zener impedance at knee (ZZK) | ZZK |  |  | 350 | ohm | IZK = 0.5 mA | 2 |
| Power dissipation | PD |  |  | 300 | mW | Ta = 25℃ | 1 |
| Forward current | IF |  |  | 250 | mA |  | 1 |
| Forward voltage | VF |  |  | 0.9 | V | IF = 10 mA | 1 |
| Junction and storage temperature | TJ,Tstg | -55 |  | 125 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `BZX84C36`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84c36-etched.step` / `bzx84c36-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c36.step` / `bzx84c36.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [FOSAN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757312457927217152) (4 pp, sha256 `120764175fb24186`, retrieved 2026-10-16, 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/bzx84c36-datasheet.pdf)