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MMSZ5241C

Public Made by Adom

by adom

amsem 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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MMSZ5241C

amsem · Zener Diodes · SOD-123

MMSZ5241C from amsem, 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 end marked with the cathode band; MMSZ5241C has Vz 11 V nominal (10.78 to 11.22 V) at IZT = 20 mA and 350 mW maximum power dissipation.
2 A passive Anode, the end without the cathode band; the diode symbol on page 1 shows it opposite the cathode, and the Zener conducts in reverse from cathode to anode at Vz.

Key specifications

Parameter Value
Manufacturer amsem
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 (Nom 11 V, Min 10.78 V, Max 11.22 V) Vz 10.78 11 11.22 V @IZT = 20 mA; *1 pulse width = 10 ms 2
Power Dissipation PD 350 mW Ta = 25 ℃ 1
Junction Temperature TJ 150 ℃ Ta = 25 ℃ 1
Storage Temperature TSTG -55 125 ℃ Ta = 25 ℃ 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 ◇ Matte Tin (Sn) Lead finish ◇ Cathode Band / Device marking 1

CAD (KiCad official)

  • Symbol: MMSZ5241C
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5241c-etched.step / mmsz5241c-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5241c.step / mmsz5241c.glb are the bare package body.

Provenance

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

  • Datasheet: amsem datasheet (3 pp, sha256 4a7b1ef1bde5b266, retrieved 2026-10-17, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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