ZMV834BTC

Overview

The ZMV834BTC is a silicon hyperabrupt varactor diode from the 830 series, designed for frequency control and filtering applications. It features closely controlled capacitance-voltage characteristics and high quality factor (Q). The device operates with low reverse current to ensure minimal phase noise. Electrical specifications include a nominal capacitance of 47 pF at 2V reverse bias, a minimum Q of 200 at 50MHz, and a breakdown voltage of 5V. It is available in miniature surface mount packages such as SOT-23, SOD-323, and SOD-523.

Feature Summary

• Hyperabrupt junction profile providing high tuning ratio
• Low reverse leakage current for excellent phase noise performance
• High quality factor (Q) across operating frequencies
• Available in single or dual common cathode configurations

Applications

• Voltage Controlled Crystal Oscillators (VCXO)
• Temperature Compensated Crystal Oscillators (TCXO)
• Wireless communications systems
• Mobile radio equipment

Procurement Notes

Verify the specific package variant (SOT-23, SOD-323, or SOD-523) required for your design, as the base model number covers multiple form factors. Confirm the ordering suffix corresponds to the desired reel size and tape configuration. Ensure compliance with RoHS directives if environmental regulations apply to your assembly process.

Selection Notes

Select this component when a steep capacitance-voltage slope is needed for wide tuning ranges. Compare against the 12V hyperabrupt range if higher breakdown voltage is necessary. Verify that the nominal capacitance and Q factor meet the oscillator's stability requirements. Check thermal dissipation limits relative to the chosen surface mount package.

Part Context

This part belongs to the Zetex 830 series of silicon hyperabrupt varactor diodes. The series includes variants like ZC829, ZDC833, and ZV831, offering different capacitance values and package options. These components are engineered for precision frequency control in RF circuits.

Replacement Considerations

Direct substitutes within the same family include ZMV834ATA or ZMV834BTA, which share identical electrical characteristics but may differ in packaging or reel specifications. Cross-referencing with other hyperabrupt varactors requires matching capacitance ratios and breakdown voltages.