# BZX84C39Q-7-F

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

BZX84C39Q-7-F from Diodes Incorporated, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | K | passive | Cathode of the Zener diode. In normal Zener regulation operation this pin is biased positive relative to the anode; at breakdown (VZ ≈ 39V) it clamps the reverse voltage. Forward drop VF ≈ 0.9V @ IF = 10mA. |
| 2 | A | passive | Anode of the Zener diode. Ground/return side in a shunt-regulator configuration. Forward drop VF ≈ 0.9V @ IF = 10mA in the forward direction (A to K). |
| 3 | NC | unconnected | No internal connection on the Diodes Inc BZX84 SOT-23 single-Zener package. Leave floating or tie to cathode net; do not use as a signal node. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `BZX84C39Q-7-F`
- `BZX84C39Q-7-FQ-13-F`

## CAD (KiCad official)

- Symbol: `BZX84C39Q-7-F`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `bzx84c39q-7-f-etched.step` / `bzx84c39q-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx84c39q-7-f.step` / `bzx84c39q-7-f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8559518039205957632) (None pp, sha256 `1ee9e1a294b45898`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/bzx84c39q-7-f-datasheet.pdf)