# BZX585-C68

**Nexperia** · Zener Diodes · SOD-523(SC-79)

BZX585-C68 from Nexperia, in a SOD-523(SC-79). 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 | K | passive | Cathode of the voltage regulator diode; the marking bar on the package indicates the cathode. |
| 2 | A | passive | Anode of the voltage regulator diode. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-523(SC-79) |
| Category | Diodes |
| Pins | 2 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Working voltage (C variant, nominal 68 V) | VZ | 64.6 |  | 71.4 | V | Tj = 25 °C unless otherwise specified; BZX585-C68 row, C tolerance series | 6 |
| Non-repetitive peak reverse current | IZSM |  |  | 0.25 | A | tp = 100 µs; square wave; Tj = 25 °C before surge | 6 |
| Diode capacitance | Cd |  |  | 35 | pF | f = 1 MHz; VR = 0 V | 6 |
| Forward voltage | VF |  |  | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 μs; δ ≤ 0.02 | 4 |
| Forward voltage | VF |  |  | 1.1 | V | IF = 100 mA; pulse test tp ≤ 300 μs; δ ≤ 0.02 | 4 |
| Non-repetitive peak reverse power dissipation | PZSM |  |  | 40 | W | tp = 100 µs; square wave; Tamb = 25 °C; prior to surge | 3 |
| Forward current | IF |  |  | 200 | mA |  | 3 |
| Total power dissipation | Ptot |  |  | 300 | mW | Tamb = 25 °C; FR4 PCB ~35 mm2 Cu area at cathode tab | 3 |
| Junction temperature | Tj | -65 |  | 150 | °C |  | 3 |
| Ambient temperature | Tamb | -65 |  | 150 | °C |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Thermal resistance from junction to ambient | Rth(j-a) |  |  | 350 | K/W | in free air; FR4 PCB ~35 mm2 Cu area at cathode tab | 3 |
| Thermal resistance from junction to solder point | Rth(j-sp) |  |  | 65 | K/W | soldering point of cathode tab | 3 |

## CAD (KiCad official)

- Symbol: `BZX585-C68`
- Footprint: `Diode_SMD:D_SOD-523`
- 3D model: SOD-523(SC-79) (KiCad packages3D, STEP)
- 3D model files: `bzx585-c68-etched.step` / `bzx585-c68-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx585-c68.step` / `bzx585-c68.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588914752306728960) (13 pp, sha256 `ce6f045443a822c0`, retrieved 2026-10-16, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-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/bzx585-c68-datasheet.pdf)