ZV950V2TA

Overview

The ZV950V2TA is a silicon hyperabrupt varactor diode designed for frequency control and filtering applications. It features closely controlled capacitance-voltage characteristics, low reverse leakage current (typically 10pA), and high Q factor at low voltages. The device operates with control voltages ranging from 0.5V to 2.5V, making it suitable for 3V systems. Key electrical parameters include a maximum reverse voltage of 12V, a reverse breakdown voltage of 12V at 10µA, and a typical reverse leakage of 20nA at 8V. At 0.5V and 1MHz, the capacitance is typically 9.5pF, dropping to 6.3pF at 1.5V, yielding a C(0.5)/C(2.5) ratio of 2.0. The minimum Q factor is 250 at 0.5V and 50MHz. It is housed in an SOD523 surface mount package.

Feature Summary

• Hyperabrupt junction design providing tight capacitance tolerance for precise frequency tuning
• Ultra-low reverse leakage current ensuring minimal phase noise in oscillator circuits
• Optimized for low-voltage operation within 0.5V to 2.5V control ranges
• High quality factor maintained at low bias voltages for efficient signal processing

Applications

• Voltage Controlled Crystal Oscillators (VCXO)
• Temperature Compensated Crystal Oscillators (TCXO)
• Wireless communication transceivers
• Mobile radio frequency synthesizers
• Digital Audio Broadcasting (DAB) receivers

Procurement Notes

Verify the specific manufacturer source, as the datasheet originates from Zetex plc, which was acquired by Diodes Incorporated. Confirm that the ordering suffix TA corresponds to the standard 3000-unit reel packaging in the SOD523 format. Ensure compatibility with existing supply chains regarding the transition from Zetex branding to Diodes Incorporated product lines.

Selection Notes

Select this component when designing circuits requiring low phase noise and stable frequency control under low voltage conditions. The ZV950V2TA offers a lower capacitance range compared to the ZV952V2 or ZV953V2 variants, making it appropriate for higher frequency tuning applications. Consider the SOD523 package constraints for board space limitations while ensuring the 12V reverse voltage rating exceeds the circuit's maximum operating potential.

Part Context

This part belongs to the 950 series of silicon low voltage hyperabrupt varactor diodes. The series includes related models such as ZV952V2, ZV953V2, and the dual configuration ZMDC953. These components are engineered to provide consistent performance across temperature variations, supporting reliable operation in portable electronic devices and communication infrastructure where size and power efficiency are critical.

Replacement Considerations

Direct pin-compatible substitutes within the same series include ZV952V2TA and ZV953V2TA, though they offer different capacitance values. For dual-channel requirements, ZMDC953TA serves as a functional alternative. Verify that any replacement maintains the required Q factor and capacitance ratio specifications for the specific oscillator application.