CMSZDA11V TR PBFREE

Overview

The CMSZDA11V TR PBFREE is a dual, common anode silicon Zener diode manufactured by Central Semiconductor Corp. It operates within a voltage range of 2.4 to 47 volts and dissipates up to 275 mW at 25°C ambient temperature. The device features a SOT-323 surface-mount package with two cathodes and one shared anode. For the 11V nominal variant, the Zener voltage ranges from 10.4V to 11.6V at a test current of 5.0 mA. Maximum reverse current is 0.1 µA at 8.0V, with a maximum impedance of 20 Ω at Izt and 150 Ω at Izk. The component supports junction temperatures from -65°C to +150°C.

Feature Summary

• Dual configuration with common anode topology for space-efficient circuit integration
• Silicon construction optimized for industrial, commercial, and computer applications
• Surface-mount SOT-323 packaging designed for automated assembly processes

Applications

• Voltage regulation in industrial control systems
• Signal clamping in commercial electronic equipment
• Overvoltage protection in computer peripheral circuits

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm plating specifications. The PBFREE designation indicates lead-free compliance, while alternative suffixes may denote tin/lead options. Confirm reel quantities and tape-and-reel specifications directly with authorized distributors or the manufacturer's official sales channels prior to procurement.

Selection Notes

Select this component based on the required dual-diode functionality and common anode configuration. Ensure the 275 mW power dissipation rating aligns with the thermal management capabilities of the target PCB layout. Verify that the SOT-323 footprint matches the design constraints and that the 11V nominal Zener voltage fits the specific regulation requirements of the application circuit.

Part Context

This part belongs to the CMSZDA series of dual common anode Zener diodes produced by Central Semiconductor Corp. The series spans nominal voltages from 2.4V to 47V, offering a standardized solution for dual-channel voltage reference and protection needs. All variants share identical physical packaging and maximum ratings, differing primarily in their electrical characteristics such as Zener voltage and impedance.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.