component

BZT52B20-E3-08

Public Made by Adom

by adom

Vishay Intertech Zener Diodes, SOD-123. Diode: pin 1 is the cathode (the banded end) by the KiCad diode-footprint convention, KiCad symbol/footprint/3D.

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docs Publish 0.1.0 · Ray
viewers bzt52b20-e3-08: symbol repaired (D_Zener, cathode pad 1) · Ray
bzt52b20-e3-08-etched.glb Publish 0.1.0 · Ray
bzt52b20-e3-08-etched.step bzt52b20-e3-08: factory component page (tier=mfr) · Ray
bzt52b20-e3-08-hero.glb bzt52b20-e3-08: hero GLB from the etched model (keeps the MPN mark) · Ray
bzt52b20-e3-08-hero.overlay.json Publish 0.1.0 · Ray
bzt52b20-e3-08.glb Publish 0.1.0 · Ray
bzt52b20-e3-08.kicad_mod Publish 0.1.0 · Ray
bzt52b20-e3-08.kicad_sym bzt52b20-e3-08: symbol repaired (D_Zener, cathode pad 1) · Ray
bzt52b20-e3-08.lbr bzt52b20-e3-08: symbol repaired (D_Zener, cathode pad 1) · Ray
bzt52b20-e3-08.step Publish 0.1.0 · Ray
package.json Brief: a diode is polarised (pin 1 = cathode); the "Unpolarised two-terminal part" sentence was wrong · Ray
page.json brief: polarity sentence corrected · Ray
README.md Publish 0.1.0 · Ray

BZT52B20-E3-08

Vishay Intertech · Zener Diodes · SOD-123

BZT52B20-E3-08 from Vishay Intertech, 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Vishay Intertech
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 19.6 20 20.4 V IZT1 = 5 mA; pulses tp = 5 ms 3
Zener voltage tolerance -2 2 % B suffix, 2% 1
Reverse voltage VR 15 V at IR = 100 nA 3
Temperature coefficient of VZ αVZ 8 10 10-4/°C IZT1 = 5 mA 3
Absolute maximum power dissipation Ptot 500 mW RthJL = 250 K/W 1
Absolute maximum power dissipation on FR-4 board Ptot 300 mW On FR-4 board with recommended soldering footprint 1
Junction temperature Tj 150 °C 1
Storage temperature range Tstg -65 150 °C 1
Operating temperature range Top -55 150 °C 1
Thermal resistance junction to lead RthJL 250 K/W 1
Thermal resistance junction to ambient RthJA 420 K/W According to JEDEC 51-3 on FR-4 board with recommended soldering footprint 1
Dynamic resistance ZZ 50 Ω at IZT1 = 5 mA 3
Dynamic resistance at knee ZZK 220 Ω at IZT2 = 1 mA 3
Reverse current IR 100 nA at VR = 15 V 3
Admissible Zener current at Tamb = 45 °C IZ 18 mA Tamb = 45 °C 3
Admissible Zener current at Tamb = 25 °C IZ 22 mA Tamb = 25 °C 3

CAD (KiCad official)

  • Symbol: BZT52B20-E3-08
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: bzt52b20-e3-08-etched.step / bzt52b20-e3-08-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzt52b20-e3-08.step / bzt52b20-e3-08.glb are the bare package body.

Provenance

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

  • Datasheet: Vishay Intertech datasheet (7 pp, sha256 88fbcb2f1d090d42, retrieved 2026-10-28, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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