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MMSZ5261B

Public Made by Adom

by adom

Yangzhou Yangjie Elec Tech Zener Diodes, SOD-123. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.

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MMSZ5261B

Yangzhou Yangjie Elec Tech · Zener Diodes · SOD-123

MMSZ5261B from Yangzhou Yangjie Elec Tech, 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 K passive Cathode: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint.
2 A passive Anode.

Key specifications

Parameter Value
Manufacturer Yangzhou Yangjie Elec Tech
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 (min / typ / max) Vz 44.65 47 49.35 V IZt=2.7 mA, Ta=25℃ 3
Zener dynamic impedance Zzt 105 Ω IZt=2.7 mA 3
Zener knee dynamic impedance Zzk 1000 Ω Izk=0.25 mA 3
Reverse current IR 0.1 μA VR=36.0 V 3
Power Dissipation PD 500 mW Ta=25℃ 1
Storage Temperature Range Tstg -55 150 °C 1
Maximum Junction Temperature TJ -55 150 °C 1
Maximum Forward Voltage VF 0.9 V IF=10 mAdc 1
Thermal Resistance Junction to Ambient Air RθJA 250 °C/W Device mounted on ceramic PCB: 7.6mm×9.4mm×0.87mm with pad areas 25mm2 1

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 1

CAD (KiCad official)

  • Symbol: MMSZ5261B
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5261b-etched.step / mmsz5261b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5261b.step / mmsz5261b.glb are the bare package body.

Provenance

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

  • Datasheet: Yangzhou Yangjie Elec Tech datasheet (4 pp, sha256 6b85b02362df6cab, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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