# BZX84C33-7-F

**Diodes Incorporated** · Zener Diodes · SOT-23

BZX84C33-7-F from Diodes Incorporated, 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 33V Zener diode (VZ 31.0V to 35.0V at IZT = 2.0mA), connected to the diode symbol in the device schematic. |
| 2 | NC | unconnected | Not connected internally; the device schematic shows this lead with no connection to the Zener diode. |
| 3 | K | passive | Cathode of the 33V Zener diode, connected to the bar side of the diode symbol in the device schematic. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| 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 | 31 | 33 | 35 | V | @ IZT = 2.0mA | 2 |
| Test Current | IZT |  | 2 |  | mA |  | 2 |
| Maximum Zener Impedance | ZZT |  |  | 80 | Ω | @ IZT, f = 1KHz | 2 |
| Maximum Zener Impedance (knee) | ZZK |  |  | 325 | Ω | @ IZK = 0.5mA, f = 1KHz | 2 |
| Maximum Reverse Current | IR |  |  | 0.1 | µA | @ VR = 23.1V | 2 |
| Temperature Coefficient |  | 27.4 |  |  | mV/C | @ IZT | 2 |
| Forward Voltage | VF |  |  | 0.9 | V | IF = 10mA | 2 |
| Power Dissipation (Note 6) | PD |  |  | 300 | mW | Note 6 | 2 |
| Power Dissipation (Note 7) | PD |  |  | 350 | mW | Note 7 | 2 |
| Thermal Resistance, Junction to Ambient (Note 6) | RθJA |  | 417 |  | °C/W | Note 6 | 2 |
| Thermal Resistance, Junction to Ambient (Note 7) | RθJA |  | 357 |  | °C/W | Note 7 | 2 |
| Operating and Storage Temperature Range | TJ, TSTG | -65 |  | 150 | °C |  | 2 |

## 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 |
|---|---|---|---|---|
| contacts |  | tin |  Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe (Lead Free Plating). Solderable per MIL-STD-202, Method 208 | 1 |

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

- Symbol: `BZX84C33-7-F`
- 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, 1.025 mm tall, datasheet A, nominal). 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: `bzx84c33-7-f-etched.step` / `bzx84c33-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c33-7-f.step` / `bzx84c33-7-f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/BZX84C33-7-F.pdf) (5 pp, sha256 `70c346b571aa2f8b`, retrieved 2026-11-13, tier: manufacturer)
- **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/bzx84c33-7-f-datasheet.pdf)