ZMV933TC

Overview

The ZMV933TC is a silicon hyperabrupt varactor diode manufactured by Diodes Incorporated, designed for frequency control and filtering applications. It features closely controlled capacitance-voltage characteristics and high Q factors. The device operates with a maximum reverse voltage of 12V and exhibits low reverse current, typically 200pA, ensuring excellent phase noise performance. Available in the SOD523 surface mount package, it supports octave tuning from 0 to 6V. Key electrical parameters include a minimum Q of 150 at 4V and 50MHz, and a power dissipation rating of 250mW.

Feature Summary

• Octave tuning capability across a 0 to 6V range
• Low reverse leakage current for reduced phase noise
• High Q factor for efficient frequency control
• Closely controlled capacitance-voltage characteristics

Applications

• VCXO and TCXO circuits
• Wireless communications systems
• Mobile radio equipment
• Pager devices

Procurement Notes

Verify the manufacturer designation on official documentation, as the component originates from Zetex Semiconductors before acquisition by Diodes Incorporated. Confirm the specific suffix 'TC' indicates tape and reel packaging containing 10,000 units per 13-inch reel. Ensure compliance with RoHS standards and check for any updated datasheet revisions prior to procurement.

Selection Notes

Select this component when designing circuits requiring precise capacitance variation over a wide voltage range. The ZMV933TC is suitable for applications demanding low phase noise due to its minimal reverse current. Consider the SOD523 package dimensions for PCB layout constraints and ensure the operating temperature remains within specified limits to maintain stable capacitance coefficients.

Part Context

This part belongs to the ZC930, ZMV930, and ZV931 series of silicon 12V hyperabrupt varactor diodes. The series offers various capacitance values and packages, including SOT23, SOD323, and SOD523. The ZMV933TC specifically utilizes the SOD523 package format, providing a compact solution for modern surface mount assembly requirements while maintaining the series' standard electrical performance profiles.

Replacement Considerations

Direct substitutes within the same series include the ZC933TA (SOT23) and ZV933V2TA (SOD523). Verify that replacement options match the required capacitance tolerances and package footprint. Cross-reference absolute maximum ratings to ensure compatibility with existing circuit designs.