ZMV832ATC

Variable Capacitance (Varicaps, Varactors) Overview

The ZMV832ATC is a silicon hyperabrupt varactor diode from the 830 series, designed for frequency control and filtering applications. It features closely controlled capacitance-voltage (CV) characteristics and high Q factors. The device operates with a reverse breakdown voltage of 5V at 10nA leakage current. At 2V reverse bias and 1MHz, the nominal capacitance is 22pF with a range of 19.8pF to 24.2pF. The minimum Q factor is 200 at 3V and 50MHz. The capacitance ratio (C2/C20) is between 5.0 and 6.5. It is available in SOT-23, SOD-323, and SOD-523 packages.

Variable Capacitance (Varicaps, Varactors) Feature Summary

• Hyperabrupt junction design providing high tuning ratios for efficient frequency modulation.
• Low reverse leakage current ensures minimal phase noise in oscillator circuits.
• High Q factor maintains signal integrity across operating frequencies.
• Available in dual common cathode configurations within miniature surface-mount packages.

Variable Capacitance (Varicaps, Varactors) Applications

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

Variable Capacitance (Varicaps, Varactors) Procurement Notes

Verify the specific package variant required, as the base model number corresponds to multiple form factors including SOT-23, SOD-323, and SOD-523. Confirm that the 'TC' suffix indicates tape and reel packaging on 13-inch reels containing 10,000 units per reel, distinct from the 'TA' suffix used for 7-inch reels. Ensure compatibility with RoHS directives and check for any authorized distributor listings to guarantee component authenticity.

Variable Capacitance (Varicaps, Varactors) Selection Notes

Select this component when a high capacitance ratio and low leakage are critical for phase noise performance. The 832 variant offers a nominal capacitance of 22pF, suitable for mid-range tuning requirements compared to lower or higher capacitance variants in the 830 series. Consider the thermal dissipation limits of the chosen package, as power dissipation varies between SOT-23/SOD-323 (330mW) and SOD-523 (250mW).

Variable Capacitance (Varicaps, Varactors) Part Context

This part belongs to the Zetex 830 series of silicon hyperabrupt varactor diodes. The series includes various capacitance values ranging from approximately 7pF to 110pF, identified by suffixes A through F. These components are engineered for precision frequency control, offering tight tolerance on CV characteristics to ensure consistent oscillator performance in demanding RF environments.

Variable Capacitance (Varicaps, Varactors) Replacement Considerations

Direct substitutes within the same family include ZMV832ATA (SOT-23), ZMV832BTA (SOD-323), and ZMV832MTR-G1 if cross-referenced with Diodes Incorporated equivalents, though electrical parameters must be verified against the original datasheet specifications for capacitance tolerance and Q factor.