# PLVA668A

**Nexperia** · Zener Diodes · SOT-23

PLVA668A from Nexperia, 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 avalanche regulator diode. |
| 2 | n.c. | unconnected | Not connected. |
| 3 | K | passive | Cathode of the avalanche regulator diode; PLVA668A has VZ of 6.60 to 7.00 V (6.80 V typ) at IZ = 250 µA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| 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 |
|---|---|---|---|---|---|---|---|
| Working voltage | VZ | 6.6 | 6.8 | 7 | V | IZ = 250 µA | 4 |
| Forward voltage | VF |  |  | 0.9 | V | IF = 10 mA | 4 |
| Dynamic resistance | RZ |  |  | 100 | Ω | 1 kHz superimposed; IZAC is 10 % of IZDC; IZ = 250 µA | 4 |
| Reverse current | IR |  |  | 10 | nA | VR = 80 % VZ nominal | 5 |
| Line regulation | ΔVZ |  |  | 0.1 | V | ILO = 10 µA; IHI = 1 mA | 5 |
| Noise voltage density | Vn |  |  | 1 |  | f = 1 kHz; B = 1 kHz; IZ = 250 µA | 5 |
| Continuous forward current | IF |  |  | 250 | mA |  | 3 |
| Repetitive peak working current | IZRM |  |  | 250 | mA | tp = 100 µs; δ = 10 % | 3 |
| Non-repetitive peak reverse power dissipation | PZSM |  |  | 30 | W | tp = 100 µs; Tj = 150 °C | 3 |
| Total power dissipation | Ptot |  |  | 250 | mW | Tamb = 25 °C | 3 |
| Junction temperature | Tj |  |  | 150 | °C |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Thermal resistance junction to ambient | Rth(j-a) |  |  | 500 | K/W | in free air | 4 |
| Thermal resistance junction to solder point | Rth(j-sp) |  |  | 330 | K/W |  | 4 |
| Working voltage | VZ |  | 6.8 |  | V | IZ = 10 µA | 4 |
| Temperature coefficient | SZ |  | 3.4 |  | mv/K | IZ = 250 µA | 4 |
| Reverse current | IR |  | 0.8 |  | nA | VR = 50 % VZ nominal | 5 |
| Reverse current | IR |  | 0.006 |  | µA | VR = 90 % VZ nominal | 5 |

## CAD (KiCad official)

- Symbol: `PLVA668A`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `plva668a-etched.step` / `plva668a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `plva668a.step` / `plva668a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Nexperia datasheet](https://assets.nexperia.com/documents/data-sheet/PLVA668A.pdf) (10 pp, sha256 `fae75a6c54d92473`, retrieved 2026-10-24, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-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/plva668a-datasheet.pdf)