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MMSZ5259A_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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MMSZ5259A_R1_00001

PANJIT International · Zener Diodes · SOD-123

MMSZ5259A_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, pin 1 in the SOD-123 polarity diagram; the package is rated for 500 mW maximum power dissipation at TA=25°C (Note A).
2 Anode passive Anode terminal of the zener diode, pin 2 in the SOD-123 polarity diagram; the junction and storage temperature range is -50 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 (MMSZ5259A) VZ 38.22 39 39.78 V @ IZT 2
Max. Zener Impedance ZZT 80 Ω @ IZT = 3.2 mA 2
Max. Zener Impedance (knee) ZZK 800 Ω @ IZK = 0.25 mA 2
Max. Reverse Leakage Current IR 0.1 μA @ VR = 30 V 2
Maximum Power Dissipation PD 500 mW @ TA=25°C (Notes A: mounted on 5.0 mm² land areas) 1
Operating Junction and Storage Temperature Range TJ -50 150 °C 1

CAD (KiCad official)

  • Symbol: MMSZ5259A_R1_00001
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5259a-r1-00001-etched.step / mmsz5259a-r1-00001-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5259a-r1-00001.step / mmsz5259a-r1-00001.glb are the bare package body.

Provenance

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

  • Datasheet: PANJIT International datasheet (7 pp, sha256 df78caf359e4d1bd, retrieved 2026-10-17, 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