ZMV830ATA

Overview

The ZMV830ATA 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 to ensure excellent phase noise performance. The device operates with low reverse current, typically 200pA, minimizing leakage effects. Electrical specifications at 25°C include a nominal capacitance of 10.0 pF (range 9.0–11.0 pF) measured at VR=2V and f=1MHz. Minimum Q is specified as 300 at VR=3V and f=50MHz, with a capacitance ratio (C2/C20) between 4.5 and 6.0 at f=1MHz. The component supports an operating 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 ensures minimal impact on oscillator phase noise
• Tight capacitance tolerance allows for precise circuit tuning and stability

Applications

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

Procurement Notes

Verify the specific package variant against the datasheet order codes, as the 'TA' suffix denotes 7-inch reels while 'TC' indicates 13-inch reels. Confirm that the manufacturer source aligns with authorized distribution channels to ensure product authenticity and compliance with RoHS directives. Check for any updates regarding the product status key, such as active or last-time-buy classifications, before finalizing procurement plans.

Selection Notes

Select the ZMV830ATA when a nominal capacitance near 10pF is required with a high tuning ratio. Ensure the application environment stays within the -55°C to +150°C operating range. Compare the minimum Q factor of 300 against other varactors if phase noise sensitivity is critical. Verify that the SOT23 or SOD323 package dimensions fit the PCB layout constraints.

Part Context

This component belongs to the Zetex 830 series of silicon hyperabrupt varactor diodes, which also includes variants like ZC830ATA and ZMV830BTA. These devices are manufactured by Zetex Semiconductors plc, now part of Diodes Incorporated. The series offers various capacitance values and package options to suit different frequency control needs in miniature surface mount formats.

Replacement Considerations

Direct substitutes within the same series include ZMV830BTA, which shares similar electrical characteristics but may differ in capacitance tolerance bands. Other family members like ZMV829ATA or ZMV831ATA offer different nominal capacitances and should only be considered if the circuit design allows for adjusted tuning ranges.