CMPZ5229B TR PBFREE

Single Zener Diodes Overview

The CMPZ5229B TR PBFREE is a surface-mount silicon Zener diode from Central Semiconductor Corp, housed in an SOT-23 package. It provides a nominal Zener voltage of 4.3 V with a tolerance of ±5% (range 4.085 V to 4.515 V). The device operates at a test current of 20 mA and dissipates up to 350 mW. Key electrical parameters include a maximum dynamic impedance of 22 Ω at the test current and a reverse leakage current of 5.0 μA at 1.0 V. The temperature coefficient is ±0.055 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation within a tight ±5% tolerance band for precision applications.
• Engineered for surface-mount assembly using the compact SOT-23 three-terminal outline.
• Features low forward voltage drop characteristics suitable for integrated circuit protection.

Single Zener Diodes Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit protection
• Entertainment system power management
• Computer peripheral voltage stabilization

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to reel packaging and 'PBFREE' indicates lead-free plating as specified by the manufacturer. Confirm the component matches the specific electrical limits defined in the official datasheet before integration into production designs.

Single Zener Diodes Selection Notes

Select this component when a 4.3 V reference is required in a small form factor. Ensure the design accounts for the 350 mW power dissipation limit and the specific impedance values at the operating current to maintain accuracy under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the CMPZ5221B through CMPZ5267B series of surface-mount silicon Zener diodes. All devices in this family share identical physical dimensions and thermal ratings, differing only in their specific Zener voltage breakdown points and associated marking codes.

Single Zener Diodes Replacement Considerations

Cross-reference other manufacturers offering Zener diodes in the SOT-23 package with a 4.3 V nominal voltage and 350 mW power rating. Verify that the replacement's impedance and leakage specifications meet or exceed the original requirements.

Single Zener Diodes FAQ

What is the pin configuration for the SOT-23 package?

Pin 1 is the Anode, Pin 2 is No Connection, and Pin 3 is the Cathode.

How does the 'B' suffix affect the voltage tolerance?

The 'B' suffix indicates a Zener voltage tolerance of ±5%. Other suffixes like 'C' or 'D' denote tighter tolerances of ±2% or ±1% respectively.