MGV125-08-0805-2

Overview

The MGV125-08-0805-2 is a packaged GaAs hyperabrupt varactor diode from the 1.25 constant gamma series, manufactured by MACOM Technology Solutions. It features a passivated mesa construction designed for low leakage and excellent post-tuning drift stability. The device operates with a tuning voltage range of 0 to 22 V and offers a typical tuning ratio of 4.1. At a reverse voltage of 4 V and 1 MHz, the nominal total capacitance is 0.36 pF, with a minimum Q factor of 4,000 at 50 MHz. This component is suitable for high-frequency tunable filters and oscillators up to 40 GHz.

Feature Summary

• Passivated mesa construction ensures low leakage current and stable performance after tuning.
• Available in a surface-mount 0805-2 package configuration for integration into compact circuits.
• Designed for operation within a 0 to 22 V tuning voltage range.

Applications

• Tunable RF filters
• Voltage-controlled oscillators (VCOs)
• High-frequency circuits operating up to 40 GHz

Procurement Notes

Verify that the specific ordering suffix matches the required package style, as the datasheet distinguishes between chip and various packaged options like E28, H20, P55, and 0805-2. Confirm compliance requirements against MIL-PRF-19500 or MIL-PRF-35834 if screening is necessary for the application environment.

Selection Notes

Select this model based on the required nominal capacitance of 0.36 pF and the need for a 1.25 constant gamma characteristic. Ensure the circuit design accommodates the 0805-2 package dimensions and accounts for the specified parasitic inductance of 0.40 nH at 1 GHz when designing matching networks.

Part Context

This part belongs to the MGV125-x Series of GaAs hyperabrupt varactor diodes. The series includes three constant gamma families: 0.75 (MGV075-x), 1.0 (MGV100-x), and 1.25. While other models in the series share similar electrical characteristics, they differ in nominal capacitance values and available package styles such as E28, 28X, H20, and P55.

Replacement Considerations

Direct replacements within the same family include MGV125-08-E28, MGV125-08-H20, and MGV125-08-P55, which share identical electrical specifications but utilize different package styles. For applications requiring different capacitance values, other models within the MGV125-x series should be evaluated.

FAQ

What is the maximum operating frequency for this varactor diode?

The MGV125-08-0805-2 is suitable for applications involving tunable filters and oscillators operating up to 40 GHz.

How does the 0805-2 package affect the electrical performance?

The 0805-2 package introduces a parasitic inductance of 0.40 nH at 1 GHz and a parasitic capacitance of 0.06 pF at 1 GHz, which must be considered in high-frequency circuit designs.

Is this component compliant with RoHS standards?

Yes, the MGV125-x Series is RoHS compliant according to European Union Directive 2011/65/EU.