component

MMSZ5222BT1G

Public Made by Adom

by adom

onsemi 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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MMSZ5222BT1G

onsemi · Zener Diodes · SOD-123

MMSZ5222BT1G from onsemi, 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 Cathode passive Cathode terminal of the Zener diode, marked by the polarity band on the package; the datasheet gives no electrical limits for this pin.
2 Anode passive Anode terminal of the Zener diode, opposite the cathode; the datasheet gives no electrical limits for this pin.

Key specifications

Parameter Value
Manufacturer onsemi
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 2.38 2.5 2.63 V @ IZT = 20 mA, TA = 25°C 3
Maximum Zener impedance ZZT 30 Ω @ IZT = 20 mA 3
Maximum Zener impedance ZZK 1250 Ω @ IZK = 0.25 mA 3
Reverse leakage current IR 100 µA @ VR = 1 V 3
Forward voltage VF 0.9 V @ IF = 10 mA 3
Total power dissipation on FR-5 board PD 500 mW TL = 75°C (Note 1) 1
Power dissipation derating PD 6.7 mW/°C Derated above TL = 75°C 1
Thermal resistance, junction-to-ambient RJA 340 °C/W Note 2 1
Thermal resistance, junction-to-lead RJL 150 °C/W Note 2 1
Junction and storage temperature range TJ, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: MMSZ5222BT1G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5222bt1g-etched.step / mmsz5222bt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5222bt1g.step / mmsz5222bt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 1c18834cb6932450, retrieved 2026-10-18, 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