MGV-125-22-0805-2X

Overview

The MGV-125-22-0805-2X is a packaged GaAs hyperabrupt varactor diode from the MACOM MGV125-x Series, featuring a constant gamma of 1.25. It utilizes a passivated mesa construction for low leakage and excellent post-tuning drift characteristics. The device operates with a tuning voltage range of 0 to 22 V. At a reverse bias of 4 V and 1 MHz, it exhibits a nominal total capacitance of 1.06 pF (range: 0.95–1.17 pF). Typical tuning ratios are 4.7 for 2–12 V and 8.5 for 2–20 V ranges. The minimum quality factor is 3,000 at 4 V and 50 MHz.

Feature Summary

• Passivated mesa construction ensures low leakage current and stable performance after tuning.
• Hyperabrupt junction design provides high linearity and consistent constant gamma characteristics.
• Available in screened configurations compliant with MIL-PRF-19500 and MIL-PRF-35834 standards.

Applications

• Tunable microwave filters
• Voltage-controlled oscillators
• Phase shifters

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm that the specific ordering suffix matches the required package style and screening level. Request official datasheets and material compliance documentation prior to procurement to ensure alignment with project specifications.

Selection Notes

Select this model when a nominal capacitance near 1.0 pF is required for frequencies up to 40 GHz. The 0805-2 package offers surface-mount convenience compared to bare die options. Ensure the circuit design accommodates the specified 0 to 22 V tuning range and leverages the 1.25 constant gamma for optimal linearity.

Part Context

This component belongs to the MGV125-x Series, which includes variants with constant gammas of 0.75, 1.0, and 1.25. The series encompasses both chip and packaged versions, allowing designers to choose between bare die for custom integration or standardized packages like the 0805-2 form factor for easier assembly.

Replacement Considerations

Direct replacements within the same series include MGV125-22-E28, MGV125-22-H20, MGV125-22-P55, and MGV125-22-0805-2. These alternatives share identical electrical characteristics but differ in physical package dimensions and mounting requirements.