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BZX8850S-C3V9-QYL

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Nexperia Zener Diodes, SOD-882. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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BZX8850S-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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx8850s-c3v9-qyl.step / bzx8850s-c3v9-qyl.glb are 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, 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