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BZX84-C51

Public Made by Adom

by adom

Nexperia Zener Diodes, SOT-23(TO-236AB). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BZX84-C51

Nexperia · Zener Diodes · SOT-23(TO-236AB)

BZX84-C51 from Nexperia, in a SOT-23(TO-236AB). 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 zener diode; forward voltage max 0.9 V at IF = 10 mA, forward current max 200 mA.
2 n.c. unconnected Not connected.
3 K passive Cathode of the zener diode; BZX84-C51 working voltage 48.0 V to 54.0 V at IZ = 2 mA, and the cathode tab is the solder point for Rth(j-sp) max 330 K/W.

Key specifications

Parameter Value
Manufacturer Nexperia
Package SOT-23(TO-236AB)
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 48 54 V IZ = 2 mA, Tj = 25 °C 7
Maximum differential resistance rdif 400 Ω IZ = 0.5 mA 7
Maximum differential resistance rdif 180 Ω IZ = 2 mA 7
Reverse current IR 0.05 μA VR = 35.7 V 7
Temperature coefficient SZ 46.6 57.2 mV/K IZ = 2 mA 7
Diode capacitance Cd 40 pF f = 1 MHz; VR = 0 V 7
Non-repetitive peak reverse current IZSM 0.4 A tp = 100 μs; square wave; Tj = 25 °C 7
Forward voltage VF 0.9 V IF = 10 mA; pulse test tp ≤ 100 μs; δ ≤ 0.02 4
Forward current IF 200 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 250 mW Tamb ≤ 25 °C 4
Junction temperature Tj 150 °C 4
Ambient temperature Tamb -55 150 °C 4
Storage temperature Tstg -65 150 °C 4
Thermal resistance from junction to ambient Rth(j-a) 500 K/W in free air; FR4 PCB, single-sided 70 µm copper, standard footprint 4
Thermal resistance from junction to solder point Rth(j-sp) 330 K/W soldering point of cathode tab 4

CAD (KiCad official)

  • Symbol: BZX84-C51
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23(TO-236AB) (KiCad packages3D, STEP)
  • 3D model files: bzx84-c51-etched.step / bzx84-c51-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx84-c51.step / bzx84-c51.glb are the bare package body.

Provenance

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

  • Datasheet: Nexperia datasheet (14 pp, sha256 e6278027e055c1b0, retrieved 2026-10-22, 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