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MMSZ5229B_R1_00001

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PANJIT International Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMSZ5229B_R1_00001

PANJIT International · Zener Diodes · SOD-123

MMSZ5229B_R1_00001 from PANJIT International, 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 as pin 1 in the SOD-123 outline; the datasheet gives no pin-specific electrical limits, and the package ratings apply (total power dissipation PD 500 mW, junction and storage temperature -55 to +150 °C).
2 Anode passive Anode terminal of the Zener diode, marked as pin 2 in the SOD-123 outline; the datasheet gives no pin-specific electrical limits, and the package ratings apply (total power dissipation PD 500 mW, junction and storage temperature -55 to +150 °C).

Key specifications

Parameter Value
Manufacturer PANJIT International
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
Nominal Zener voltage (Min. V) 4.09 V I Z = 20 mA 2
Nominal Zener voltage (Nom. V) 4.3 V I Z = 20 mA 2
Nominal Zener voltage (Max. V) 4.52 V I Z = 20 mA 2
Max Zener impedance (ZZT) ZZT 22 Ω I Z = 20 mA 2
Max Zener impedance (ZZK) ZZK 2000 Ω I ZK = 0.25 mA 2
Max reverse leakage current IR 5 μA V R = 1 V 2
Total power dissipation PD 500 mW Notes A 1
Operating junction and storage temperature range TJ -55 150 °C 1
Typical thermal resistance, junction to ambient RθJA 430 °C/W Notes A or B (layout ambiguous; printed value 430) 1
Typical thermal resistance, junction to ambient RθJA 325 °C/W Notes A or B (layout ambiguous; printed value 325) 1

CAD (KiCad official)

  • Symbol: MMSZ5229B_R1_00001
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5229b-r1-00001-etched.step / mmsz5229b-r1-00001-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5229b-r1-00001.step / mmsz5229b-r1-00001.glb are the bare package body.

Provenance

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

  • Datasheet: PANJIT International datasheet (6 pp, sha256 14125e00b8f213bf, 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