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MMBZ5234BLT1G

Public Made by Adom

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

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MMBZ5234BLT1G

onsemi · Zener Diodes · SOT-23

MMBZ5234BLT1G from onsemi, 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 ANODE passive Anode terminal of the Zener regulator diode; the datasheet gives the pinout as 1-Anode, 2-No Connection, 3-Cathode for this series.
2 NC unconnected No internal connection; the datasheet specifies this pin as no connection and it is not used in the circuit.
3 CATHODE passive Cathode terminal of the Zener regulator diode, identified on the package by the polarity band; device ratings are limited to a total power dissipation of 225 mW on FR-5 board and a junction and storage temperature range of -65 to +150 °C.

Key specifications

Parameter Value
Manufacturer onsemi
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
Reverse Zener Voltage VZ 5.89 6.2 6.51 V @ IZT = 20 mA; pulse test at TA = 25°C (Note 3) 3
Maximum Zener Impedance @ IZT ZZT 7 7 Ω @ IZT = 20 mA 3
Maximum Zener Impedance @ IZK ZZK 1000 1000 Ω @ IZK = 0.25 mA 3
Reverse Leakage Current IR 5 A @ VR = 4 V 3
Forward Voltage VF 0.9 V @ IF = 10 mA, for all types 3
Total Power Dissipation on FR-5 Board PD 225 mW FR-5 board (1.0 X 0.75 X 0.62 in.), TA = 25°C (Note 1) 1
Total Power Dissipation on Alumina Substrate PD 300 mW Alumina substrate (0.4 X 0.3 X 0.024 in, 99.5% alumina), TA = 25°C (Note 2) 1
Thermal Resistance, Junction-to-Ambient (FR-5 board) RJA 556 °C/W FR-5 board (Note 1) 1
Thermal Resistance, Junction-to-Ambient (Alumina substrate) RJA 417 °C/W Alumina substrate (Note 2) 1
Junction and Storage Temperature Range TJ, Tstg -65 150 °C 1

CAD (KiCad official)

  • Symbol: MMBZ5234BLT1G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbz5234blt1g-etched.step / mmbz5234blt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbz5234blt1g.step / mmbz5234blt1g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (6 pp, sha256 bdbb8fa2d7f751fd, retrieved 2026-10-18, 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