ZMV833BTC

Overview

The ZMV833BTC is a silicon hyperabrupt varactor diode from the 830 series, manufactured by Diodes Incorporated (formerly Zetex Semiconductors). It is housed in an SOT-23 surface-mount package. The device features closely controlled capacitance-voltage characteristics and high Q for frequency control applications. Key electrical parameters include a nominal capacitance of 33.0 pF at 2V reverse bias and 1MHz frequency, with a minimum Q of 200 at 3V and 50MHz. The capacitance ratio (C2/C20) ranges from 5.0 to 6.5. It operates within a temperature range of -55°C to +150°C.

Feature Summary

• Hyperabrupt junction design providing high tuning ratios for efficient frequency modulation
• Low reverse leakage current ensuring excellent phase noise performance
• Tightly controlled capacitance-voltage tolerance for precise circuit stability

Applications

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

Procurement Notes

Verify component authenticity through authorized channels due to historical manufacturer transitions. Confirm RoHS compliance status as per latest datasheet revisions. Check for obsolete or last-time-buy status before finalizing procurement plans. Ensure storage conditions meet specified humidity sensitivity levels.

Selection Notes

Select this component when a nominal capacitance near 33pF is required in a compact SOT-23 footprint. Compare against the ZC833BTA variant if different marking codes are preferred. Consider the ZMV830BTA or ZMV831BTA if lower capacitance values better suit the specific tuning range requirements of the target oscillator design.

Part Context

This part belongs to the 830 series of silicon hyperabrupt varactor diodes originally developed by Zetex Semiconductors plc. Following the acquisition by Diodes Incorporated, these components continue to serve niche RF filtering and frequency control markets. The series offers various capacitance options across multiple miniature surface mount packages.

Replacement Considerations

Direct substitutes within the same series include ZC833BTA and ZMV833ATA. Verify pinout compatibility and exact capacitance tolerances when cross-referencing with other manufacturers' hyperabrupt varactors.