component

MMBZ5229B

Public Made by Adom

by adom

Slkor SLKORMICRO Elec Zener Diodes, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMBZ5229B

Slkor SLKORMICRO Elec · Zener Diodes · SOT-23

MMBZ5229B from Slkor SLKORMICRO Elec, in a SOT-23. 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 A passive Anode of the zener diode, shown as pin 1 in the connection diagram (forward voltage 0.9 V max at IF=10mA).
2 NC unconnected No connection, marked 2 NC in the connection diagram.
3 K passive Cathode of the zener diode, shown as pin 3 in the connection diagram (MMBZ5229B zener voltage 4.09 V min to 4.52 V max, 4.3 V nominal, at IZT=20mA).

Key specifications

Parameter Value
Manufacturer Slkor SLKORMICRO Elec
Package SOT-23
Category Diodes
Pins 3

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 (nominal 4.3 V, test current IZT = 20 mA) VZ 4.09 4.3 4.52 V IZT = 20 mA 2
Maximum zener impedance ZZT 22 Ω @ IZT = 20 mA 2
Maximum zener impedance (knee) ZZK 2000 Ω @ IZK = 0.25 mA 2
Maximum reverse leakage current IR 5 μA VR = 1.0 V 2
Forward voltage VF 0.9 V IF = 10 mA 1
Power dissipation Pd 350 mW Note 1: device terminals kept at ambient temperature 1
Thermal resistance, junction to ambient air RθJA 357 ℃/W Junction to ambient air 1
Operating and storage temperature range Tj, Tstg -65 150 ℃ 1

CAD (KiCad official)

  • Symbol: MMBZ5229B
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbz5229b-etched.step / mmbz5229b-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbz5229b.step / mmbz5229b.glb are the bare package body.

Provenance

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

  • Datasheet: Slkor SLKORMICRO Elec datasheet (4 pp, sha256 8096af577e1c32df, retrieved 2026-10-18, 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