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BZX8850S-C3V9-QYL
Public Made by Adomby adom
Nexperia Zener Diodes, SOD-882. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBZX8850S-C3V9-QYL
Nexperia · Zener Diodes · SOD-882
BZX8850S-C3V9-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 of the voltage regulator diode (marking bar indicates the cathode); VZ for the C3V9 type is 3.70 V to 4.10 V at IZ = 50 µA. |
| 2 | A | passive | Anode of the voltage regulator diode; forward voltage is max 0.9 V at IF = 10 mA and IF is limited to 200 mA. |
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 | VZ | 3.7 | 4.1 | V | IZ = 50 µA, Tj = 25 °C | 4 | |
| Differential resistance | rdiff | 600 | Ω | IZ = 50 µA, Tj = 25 °C | 4 | ||
| Differential resistance | rdiff | 95 | Ω | IZ = 1 mA, Tj = 25 °C | 4 | ||
| Differential resistance | rdiff | 5 | Ω | IZ = 5 mA, Tj = 25 °C | 4 | ||
| Temperature coefficient | SZ | -2.7 | 2.5 | mV/K | IZ = 5 mA, Tj = 25 °C | 4 | |
| Reverse current | IR | 2 | µA | Tj = 25 °C; VR = 2.0 V | 4 | ||
| Diode capacitance | Cd | 150 | 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 | ||
| 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 | 3 | ||
| Junction temperature | Tj | 150 | °C | 3 | |||
| Ambient temperature | Tamb | -55 | 150 | °C | 3 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Thermal resistance from junction to ambient | Rth(j-a) | 340 | K/W | in free air | 3 |
CAD (KiCad official)
- Symbol:
BZX8850S-C3V9-QYL - Footprint:
Diode_SMD:D_SOD-882 - 3D model: SOD-882 (KiCad packages3D, STEP)
- 3D model files:
bzx8850s-c3v9-qyl-etched.step/bzx8850s-c3v9-qyl-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bzx8850s-c3v9-qyl.step/bzx8850s-c3v9-qyl.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (11 pp, sha256
89cb2b56ec72d003, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).