ZC933TA

Overview

The ZC933TA is a silicon hyperabrupt varactor diode manufactured by Diodes Incorporated, designed for frequency control and filtering applications. It features closely controlled capacitance-voltage (CV) characteristics and high quality factor (Q). The device operates with a maximum reverse voltage of 12 V and supports octave tuning from 0 to 6 V. Electrical specifications at 25°C include a minimum Q of 150 at 4 V and 50 MHz, with capacitance values ranging from 12.00 pF to 27.00 pF depending on the applied reverse bias voltage.

Feature Summary

• Low reverse current ensures very low phase noise performance
• Octave tuning capability from 0 to 6 V
• High Q factor with closely controlled CV characteristics

Applications

• VCXO and TCXO
• Wireless communications
• Mobile radio

Procurement Notes

Verify the specific package variant required, as the series includes SOT-23, SOD-323, and SOD-523 options. Confirm that the ordering suffix matches the desired reel size, such as TA for 7-inch reels or TC for 13-inch reels. Ensure compliance with RoHS standards if applicable to the project requirements.

Selection Notes

Select this component based on the required capacitance range and Q factor at the operating frequency. Verify that the maximum reverse voltage rating of 12 V aligns with the circuit design. Consider the power dissipation limits relative to the chosen surface mount package type.

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 packaging formats to suit different miniature surface mount requirements while maintaining consistent electrical performance profiles.

Replacement Considerations

Check for other members of the ZC93x series with similar capacitance ranges. Verify compatibility with existing PCB footprints if switching between SOT-23, SOD-323, or SOD-523 packages.