component

BZT52B20

Public Made by Adom

by adom

NH Zener Diodes, SOD-123. 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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BZT52B20

NH · Zener Diodes · SOD-123

BZT52B20 from NH, in a SOD-123. 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, marked by the white band on the package; the Zener voltage of BZT52B20 is 20.0V nominal (19.60V to 20.40V) at Izt=5mA.
2 A passive Anode; maximum power dissipation is 500mW and forward voltage is 0.9V maximum at IF=10mA.

Key specifications

Parameter Value
Manufacturer NH
Package SOD-123
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
Zener voltage (Vz) at Izt Vz 19.6 20 20.4 V @Izt 2
Zener voltage tolerance (B series) -2 2 % 1
Maximum Zener impedance at Izt Zzt 55 Ω @Izt 2
Maximum Zener impedance at Izk Zzk 225 Ω @Izk 2
Maximum reverse current IR 0.1 uA VR 14.0 V 2
Maximum instantaneous forward voltage VF 0.9 V IF=10mA, pulse width < 10 ms (Note 2) 1
Power dissipation PD 500 mW Note 1: device mounted on ceramic PCB 7.6mm x 9.4mm x 0.87mm with pad areas 25mm2 1
Operating temperature range TOPR -55 150 °C 1
Storage temperature range TSTG -55 150 °C 1
Thermal resistance, junction to ambient air RθJA 400 °C/W Note 1: device mounted on ceramic PCB 1

CAD (KiCad official)

  • Symbol: BZT52B20
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: bzt52b20-etched.step / bzt52b20-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzt52b20.step / bzt52b20.glb are the bare package body.

Provenance

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

  • Datasheet: NH datasheet (6 pp, sha256 7d743f0a19061d11, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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