# BZX8850S-C3V3-QYL

**Nexperia** · Zener Diodes · SOD-882

BZX8850S-C3V3-QYL from Nexperia, in a SOD-882. 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; the marking bar on the device indicates the cathode, and the package outline marks the cathode on the top side. |
| 2 | A | passive | Anode of the voltage regulator diode, paired with cathode pin 1. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | SOD-882 |
| 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 (3V3-Q) | VZ | 3.13 |  | 3.47 | V | IZ = 50 µA; Tj = 25 °C | 4 |
| Differential resistance (3V3-Q), first rdiff column | rdiff |  |  | 600 | Ω | IZ = 50 µA (column assignment inferred from Table 8 header order; verify) | 4 |
| Differential resistance (3V3-Q), second rdiff column | rdiff |  |  | 100 | Ω | IZ = 1 mA (column assignment inferred from Table 8 header order; verify) | 4 |
| Reverse current (3V3-Q) | IR |  |  | 7.5 | µA | VR = 1.5 V | 4 |
| Temperature coefficient (3V3-Q) | SZ | -3.5 |  | 1.2 | mV/K | IZ = 5 mA (per Table 8 header; verify) | 4 |
| Diode capacitance (3V3-Q) | Cd |  |  | 160 | pF | f = 1 MHz; VR = 0 V | 4 |
| Forward voltage | VF |  |  | 0.9 | V | IF = 10 mA; pulse test tp ≤ 300 µs; δ ≤ 0.02 | 4 |
| Working voltage tolerance series |  | -5 |  | 5 | % | Approximately ± 5 % tolerance series (Features) | 1 |
| Forward current | IF |  |  | 200 | mA |  | 3 |
| Non-repetitive peak reverse power dissipation | PZSM |  |  | 40 | W | tp = 100 µs; square wave; Tj = 25 °C; prior to surge | 3 |
| Total power dissipation | Ptot |  |  | 365 | mW | Tamb ≤ 25 °C; device mounted on FR4 PCB, single-sided copper | 3 |
| Junction temperature | Tj |  |  | 150 | °C |  | 3 |
| Ambient temperature | Tamb | -55 |  | 150 | °C |  | 3 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 3 |
| Thermal resistance junction to ambient | Rth(j-a) |  |  | 340 | K/W | In free air; device mounted on FR4 PCB, single sided copper | 3 |

## CAD (KiCad official)

- Symbol: `BZX8850S-C3V3-QYL`
- Footprint: `Diode_SMD:D_SOD-882`
- 3D model: SOD-882 (KiCad packages3D, STEP)
- 3D model files: `bzx8850s-c3v3-qyl-etched.step` / `bzx8850s-c3v3-qyl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bzx8850s-c3v3-qyl.step` / `bzx8850s-c3v3-qyl.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/8590290310799384576) (11 pp, sha256 `89cb2b56ec72d003`, 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/bzx8850s-c3v3-qyl-datasheet.pdf)