component

BZX84C20LT1G

Public Made by Adom

by adom

onsemi Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BZX84C20LT1G

onsemi · Zener Diodes · SOT-23

BZX84C20LT1G from onsemi, in a SOT-23. 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 Anode passive Zener diode anode; the datasheet gives the pinout as 1-Anode, 2-No Connection, 3-Cathode for this SOT-23 device.
2 NC unconnected No connection on the SOT-23 Style 8 outline; the datasheet pinout lists pin 2 as No Connection.
3 Cathode passive Zener diode cathode, identified on the package by the polarity band.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23
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
Reverse Zener Voltage @ IZT1 (Min) VZ1 18.8 20 21.2 V @ IZT1 = 5 mA (Note 3) 3
Maximum Zener Impedance @ IZT1 ZZT1 55 Ω @ IZT1 = 5 mA (Note 3) 3
Reverse Zener Voltage @ IZT2 (Min/Max) VZ2 18.7 21.1 V @ IZT2 = 1 mA (Note 3) 3
Maximum Zener Impedance @ IZT2 ZZT2 225 Ω @ IZT2 = 1 mA (Note 3) 3
Reverse Zener Voltage @ IZT3 (Min/Max) VZ3 18.9 21.4 V @ IZT3 = 20 mA (Note 3) 3
Maximum Zener Impedance @ IZT3 ZZT3 20 Ω @ IZT3 = 20 mA (Note 3) 3
Max Reverse Leakage Current IR 0.05 µA @ VR = 14 V 3
Maximum Temperature Coefficient of VZ (Min) VZ 14.4 18 mV/k @ IZT1 = 5 mA 3
Max Capacitance C 85 pF @ VR = 0, f = 1 MHz 3
Forward Voltage VF 0.9 V @ IF = 10 mA 3
Total Power Dissipation on FR-5 Board PD 250 mW @ TA = 25°C, FR-5 board (Note 1) 2
Derating above 25°C (FR-5 Board) PD 2 mW/°C Derated above 25°C, FR-5 board (Note 1) 2
Thermal Resistance, Junction-to-Ambient (FR-5 Board) RθJA 500 °C/W FR-5 board (Note 1) 2
Total Power Dissipation on Alumina Substrate PD 300 mW @ TA = 25°C, alumina substrate (Note 2) 2
Derating above 25°C (Alumina Substrate) PD 2.4 mW/°C Derated above 25°C, alumina substrate (Note 2) 2
Thermal Resistance, Junction-to-Ambient (Alumina Substrate) RθJA 417 °C/W Alumina substrate (Note 2) 2
Junction and Storage Temperature Range TJ, Tstg -65 150 °C 2

CAD (KiCad official)

  • Symbol: BZX84C20LT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bzx84c20lt1g-etched.step / bzx84c20lt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bzx84c20lt1g.step / bzx84c20lt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 e8ae0892f00a3794, retrieved 2026-10-19, 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