ZMV834BTA

Overview

The ZMV834BTA is a silicon hyperabrupt varactor diode from the 830 series, manufactured by Diodes Incorporated (formerly Zetex). It operates in miniature surface mount packages with a nominal capacitance of 47.0 pF at 2V reverse bias and 1MHz frequency. The device features a minimum Q factor of 200 at 50MHz and 3V, with a capacitance ratio ranging from 5.0 to 6.5. Electrical characteristics include a maximum reverse leakage current of 20nA at 20V and a temperature coefficient of capacitance between 300 and 400 ppm/°C.

Feature Summary

• Hyperabrupt junction design providing high tuning ratios for frequency control applications
• Low reverse leakage current ensuring excellent phase noise performance
• High quality factor (Q) maintained across operating frequencies
• Available in compact surface mount package formats

Applications

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

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm datasheet revision status prior to integration. Ensure handling procedures account for electrostatic discharge sensitivity. Validate package marking codes against official order code tables. Check environmental compliance documentation for specific project requirements.

Selection Notes

Select based on required nominal capacitance and tuning range specifications. Evaluate Q factor requirements at target operating frequencies. Consider package size constraints for PCB layout. Verify thermal dissipation capabilities within the intended operating temperature range. Compare against alternative hyperabrupt varactors if steeper CV slopes are needed.

Part Context

This component belongs to the 830 series of silicon hyperabrupt varactor diodes. The series includes single and dual common cathode variants available in SOT23, SOT323, SOD523, and SOD323 packages. The 'B' suffix indicates specific capacitance tolerance bands within the series lineup.

Replacement Considerations

Check for direct cross-reference part numbers from other manufacturers offering identical hyperabrupt characteristics. Verify pinout compatibility and package dimensions before substitution. Ensure equivalent electrical parameters such as Q factor and leakage current are met.