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CMPZ5242B TR PBFREE

Public Made by Adom

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

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CMPZ5242B TR PBFREE

Central Semicon · Zener Diodes · SOT-23

CMPZ5242B TR PBFREE from Central Semicon, 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 of the zener diode; the datasheet lists lead code 1 as Anode (VF=0.9V max at IF=10mA).
2 NC unconnected No connection, per the datasheet lead code for the SOT-23 case.
3 Cathode passive Cathode of the zener diode; the CMPZ5242B has a nominal VZ of 12V (11.40V to 12.60V) at IZT=20mA.

Key specifications

Parameter Value
Manufacturer Central Semicon
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 VZ 11.4 12 12.6 V @ IZT=20mA, TA=25°C 1
Zener Test Current IZT 20 mA TA=25°C 1
Maximum Zener Impedance ZZT 30 Ω @ IZT=20mA 1
Maximum Zener Impedance (knee) ZZK 600 Ω @ IZK=0.25mA 1
Maximum Reverse Current IR 1 μA @ VR=9.1V 1
Forward Voltage VF 0.9 V @ IF=10mA 1
Power Dissipation PD 350 mW TA=25°C 1
Operating and Storage Junction Temperature TJ, Tstg -65 150 °C 1
VZ Tolerance -5 5 % "B" suffix 1
Temperature Coefficient of VZ ΘVZ 0.077 %/°C 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 1. If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when ordering (example: 2N2222A TIN/LEAD). 3

CAD (KiCad official)

  • Symbol: CMPZ5242B TR PBFREE
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: cmpz5242b-tr-pbfree-etched.step / cmpz5242b-tr-pbfree-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cmpz5242b-tr-pbfree.step / cmpz5242b-tr-pbfree.glb are the bare package body.

Provenance

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

  • Datasheet: Central Semicon datasheet (3 pp, sha256 8539b162a192d6fe, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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