# BZX84B24Q-7-F

**Diodes Incorporated** · Zener Diodes · SOT-23-3

BZX84B24Q-7-F from Diodes Incorporated, in a SOT-23-3. 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, shown on the bottom-left terminal of the device schematic; the BZX84B24 has a nominal VZ of 24V (23.5V to 24.5V) at IZT = 5.0mA. |
| 2 | NC | unconnected | Bottom-right terminal, drawn with no internal connection in the device schematic. |
| 3 | K | passive | Cathode of the zener diode, shown on the single top terminal of the device schematic; it is the positive side in reverse breakdown, with a power dissipation of 350mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23-3 |
| 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 24 V, KY9 variant) | VZ | 23.5 | 24 | 24.5 | V | @ IZT = 5.0 mA | 2 |
| Maximum Zener impedance | ZZT |  |  | 70 | Ω | @ IZT = 5.0 mA, f = 1 KHz | 2 |
| Maximum Zener impedance (knee) | ZZK |  |  | 250 | Ω | @ IZK = 1.0 mA | 2 |
| Maximum reverse current | IR |  |  | 0.1 | µA | @ VR = 16.8 V | 2 |
| Temperature coefficient | TC | 18.4 |  | 22 | mV/°C | @ IZT = 5.0 mA | 2 |
| Power dissipation (Note 6) | PD |  |  | 350 | mW | Note 6: valid provided the terminals are kept at ambient temperature | 2 |
| Power dissipation (Note 5) | PD |  |  | 300 | mW | Note 5: device mounted on FR-4 PCB with recommended pad layout | 2 |
| Thermal resistance, junction to ambient air (Note 5) | RθJA |  | 417 |  | °C/W | Note 5: device mounted on FR-4 PCB with recommended pad layout | 2 |
| Thermal resistance, junction to ambient air (Note 6) | RθJA |  | 357 |  | °C/W | Note 6: terminals kept at ambient temperature | 2 |
| Operating and storage temperature range | TJ, TSTG | -65 |  | 150 | °C | Operating and storage | 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: Solderable per MIL-STD-202, Method 208 Lead-Free Plating (Matte Tin Finish Annealed over Alloy 42 Leadframe). | 1 |

## CAD (KiCad official)

- Symbol: `BZX84B24Q-7-F`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.025 mm tall, datasheet A, nominal). Neither the vendor nor KiCad ships a 3D model for this package, so 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: `bzx84b24q-7-f-etched.step` / `bzx84b24q-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84b24q-7-f.step` / `bzx84b24q-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/BZX84B24Q-7-F.pdf) (5 pp, sha256 `4d114424c6d8f3f6`, retrieved 2026-11-12, 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:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/bzx84b24q-7-f-datasheet.pdf)