component

SZMMSZ5223BT1G

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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package.json Publish 0.1.0 · Ray 9d ago
page.json Set visibility: public · Ray 9d ago
README.md Publish 0.1.0 · Ray 9d ago
szmmsz5223bt1g-etched.glb Publish 0.1.0 · Ray 9d ago
szmmsz5223bt1g-etched.step szmmsz5223bt1g: factory component page (tier=lcsc) · Ray 9d ago
szmmsz5223bt1g-hero.glb szmmsz5223bt1g: hero GLB from the etched model (keeps the MPN mark) · Ray 9d ago
szmmsz5223bt1g-hero.overlay.json Publish 0.1.0 · Ray 9d ago
szmmsz5223bt1g.glb Publish 0.1.0 · Ray 9d ago
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szmmsz5223bt1g.kicad_sym Publish 0.1.0 · Ray 9d ago
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szmmsz5223bt1g.step Publish 0.1.0 · Ray 9d ago

SZMMSZ5223BT1G

onsemi · Zener Diodes · SOD-123

SZMMSZ5223BT1G 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, indicated on the package by the polarity band; the datasheet gives no separate electrical limit for this pin beyond the Zener ratings in the electrical characteristics table.
2 Anode passive Anode terminal of the Zener diode per the SOD-123 Style 1 pin assignment; the datasheet gives no separate electrical limit 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, minimum VZ 2.57 V @ IZT = 20 mA; 5% (B suffix) type, TA = 25°C 3
Zener voltage, nominal VZ 2.7 V @ IZT = 20 mA; TA = 25°C 3
Zener voltage, maximum VZ 2.84 V @ IZT = 20 mA; 5% (B suffix) type, TA = 25°C 3
Zener voltage tolerance VZ -5 5 % Standard tolerance on nominal Zener voltage (B suffix) 3
Maximum Zener impedance ZZT 30 Ω @ IZT = 20 mA; AC test IZ(AC)=0.1 IZ(dc), f = 1 kHz 3
Maximum Zener impedance ZZK 1300 Ω @ IZK = 0.25 mA; AC test IZ(AC)=0.1 IZ(dc), f = 1 kHz 3
Reverse leakage current IR 75 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, FR-5 board (3.5 x 1.5 in, minimum recommended footprint) 1
Thermal resistance, junction-to-ambient RθJA 340 °C/W Note 2 (infrared scan method) 1
Thermal resistance, junction-to-lead RθJL 150 °C/W Note 2 (infrared scan method) 1
Junction and storage temperature range TJ, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: SZMMSZ5223BT1G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: szmmsz5223bt1g-etched.step / szmmsz5223bt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); szmmsz5223bt1g.step / szmmsz5223bt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 c22dd8fe4fe15c0e, 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