CMSZDA9V1 TR PBFREE

Overview

The CMSZDA9V1 TR PBFREE is a dual, common anode silicon zener diode manufactured by Central Semiconductor Corp. It provides a nominal zener voltage of 9.1 V with a tolerance range of 8.5 V to 9.6 V at a test current of 5.0 mA. The device features a maximum zener impedance of 15 Ω and a reverse leakage current of 0.5 µA at 1.0 V. It supports a maximum power dissipation of 275 mW and operates within a junction temperature range of -65°C to +150°C. Packaged in an SOT-323 surface-mount case, it includes a positive temperature coefficient of 0.06 %/°C.

Feature Summary

• Dual configuration with a common anode connection for simplified circuit integration
• Silicon construction optimized for industrial, commercial, and computer applications
• Surface-mount design utilizing the compact SOT-323 package

Applications

• Industrial equipment voltage regulation
• Commercial electronic circuit protection
• Entertainment system power management
• Computer application voltage clamping

Procurement Notes

Verify that the ordering suffix matches the required plating specification. The 'PBFREE' designation indicates lead-free plating compliance. Confirm the 'TR' suffix aligns with the necessary tape and reel packaging format for automated assembly processes. Ensure the component meets specific environmental standards if required by the target application.

Selection Notes

Select this component when a dual zener array with a common anode topology is required. The 9.1 V nominal voltage suits applications needing precise reference levels or overvoltage protection near that threshold. Consider the 275 mW power rating and SOT-323 footprint constraints during thermal and spatial planning. Verify that the 15 Ω impedance meets the dynamic regulation requirements of the circuit.

Part Context

This part belongs to the CMSZDA2V4 through CMSZDA47V series from Central Semiconductor Corp. The series covers a wide voltage range from 2.4 V to 47 V, all sharing the same dual common anode architecture and SOT-323 package. This standardization allows designers to scale voltage requirements across different product lines while maintaining consistent board layout and assembly processes.

Replacement Considerations

Direct substitutes must match the dual common anode configuration, SOT-323 package, and 9.1 V nominal voltage. Verify that alternative components meet the 275 mW power dissipation and -65°C to +150°C operating temperature range specifications.