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Contents

README

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MMSZ5240BT1G

onsemi · Zener Diodes · SOD-123

MMSZ5240BT1G from onsemi, in a SOD-123. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Cathode passive Cathode terminal; conducts reverse Zener current of 20 mA maximum at nominal Zener voltage VZ = 10 V (range 9.50-10.50 V) with dynamic impedance ZZT = 17 Ω.
2 Anode passive Anode terminal; conducts forward current up to 10 mA at maximum forward voltage VF = 0.95 V and reverse leakage current IR = 3 μA maximum at reverse bias voltage VR = 8 V.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOD-123
Category Diodes
Pins 2

CAD (KiCad official)

  • Symbol: MMSZ5240BT1G
  • Footprint: Diode_SMD:D_SOD-123
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5240bt1g-etched.step / mmsz5240bt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5240bt1g.step / mmsz5240bt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 dd020fc5576bb75b, retrieved 2026-09-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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