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MMSZ5233BT1G

Public Made by Adom

by adom

onsemi Zener Diodes, SOD-123. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMSZ5233BT1G

onsemi · Zener Diodes · SOD-123

MMSZ5233BT1G from onsemi, 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 Cathode passive The cathode is marked by the polarity band on the SOD-123 body and is the Zener regulating terminal, with the device rated at Zener voltage VZ = 5.70 V min to 6.30 V max (nominal 6.0 V) at IZT = 20 mA for MMSZ5233BT1G.
2 Anode passive The anode is the terminal opposite the cathode polarity band, and the datasheet specifies forward voltage VF of 0.9 V max at IF = 10 mA for the 5% tolerance devices.

Key specifications

Parameter Value
Manufacturer onsemi
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
Reverse Zener Voltage (nominal 6.0 V, B suffix 5%) VZ 5.7 6 6.3 V IZT = 20 mA; TA = 25°C 3
Zener voltage standard tolerance (B suffix) -5 5 % B suffix, on nominal Zener voltage 3
Maximum Zener Impedance @ IZT ZZT 7 Ω IZT = 20 mA 3
Maximum Zener Impedance @ IZK ZZK 1600 Ω IZK = 0.25 mA 3
Reverse Leakage Current IR 5 µA VR = 3.5 V 3
Forward Voltage VF 0.9 V IF = 10 mA 3
Total Power Dissipation on FR-5 Board PD 500 mW FR-5 board (Note 1), TL = 75°C 1
Derating above 75°C PD 6.7 mW/°C Derated above TL = 75°C 1
Thermal Resistance, Junction-to-Ambient RJA 340 °C/W Note 2 1
Thermal Resistance, Junction-to-Lead RJL 150 °C/W Note 2 1
Junction and Storage Temperature Range TJ, Tstg -55 150 °C 1

CAD (KiCad official)

  • Symbol: MMSZ5233BT1G
  • Footprint: Diode_SMD:D_SOD-123F
  • 3D model: SOD-123 (KiCad packages3D, STEP)
  • 3D model files: mmsz5233bt1g-etched.step / mmsz5233bt1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmsz5233bt1g.step / mmsz5233bt1g.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 2026-10-18, 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