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BZX384-B9V1

Nexperia · Zener Diodes · SOD-323

BZX384-B9V1 from Nexperia, in a SOD-323. 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 package indicates the cathode, and the series is rated up to 250 mA forward current and 300 mW total power dissipation at Tamb ≤ 25 °C.
2 A passive Anode of the voltage regulator diode, used with the cathode (pin 1) to form the reverse-biased regulating junction.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOD-323
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 (B selection, 9V1 row) VZ 8.92 9.28 V IZ = 5 mA; Tj = 25 °C unless otherwise specified 6
Maximum differential resistance rdif 100 Ω IZ = 1 mA 6
Maximum differential resistance rdif 15 Ω IZ = 5 mA 6
Reverse current IR 0.5 μA VR = 6 V 6
Temperature coefficient SZ 3.8 7 mV/K IZ = 5 mA 6
Diode capacitance Cd 150 pF f = 1 MHz; VR = 0 V 6
Non-repetitive peak reverse current IZSM 3 A tp = 100 μs; square wave; Tj = 25 °C prior to surge 6
Forward voltage VF 0.9 V IF = 10 mA; pulse test tp ≤ 100 μs; δ ≤ 0.02 4
Forward voltage VF 1.1 V IF = 100 mA; pulse test tp ≤ 100 μs; δ ≤ 0.02 4
Forward current IF 250 mA 4
Non-repetitive peak reverse power dissipation PZSM 40 W tp = 100 μs; square wave; Tj = 25 °C prior to surge 4
Total power dissipation Ptot 300 mW Tamb ≤ 25 °C; device mounted on FR4 PCB, single-sided copper, standard footprint 4
Junction temperature Tj 150 °C 4
Ambient temperature Tamb -65 150 °C 4
Storage temperature Tstg -65 150 °C 4
Thermal resistance from junction to ambient Rth(j-a) 415 K/W in free air; device mounted on FR4 PCB, single-sided copper, standard footprint 4
Thermal resistance from junction to solder point Rth(j-sp) 110 K/W soldering point of cathode tab 4
Voltage tolerance (B series) -2 2 % BZX384-B type letter; printed as ±2 % 1

CAD (KiCad official)

  • Symbol: BZX384-B9V1
  • Footprint: Diode_SMD:D_SOD-323
  • 3D model: SOD-323 (KiCad packages3D, STEP)
  • 3D model files: bzx384-b9v1-etched.step / bzx384-b9v1-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx384-b9v1.step / bzx384-b9v1.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (14 pp, sha256 a381ee1ec1ad5a2b, retrieved 2026-11-08, 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