MA46H203-1056

Overview

The MA46H203-1056 is a surface mount gallium arsenide tuning varactor featuring a hyperabrupt junction with a constant gamma of 1.25 from 2 to 20 volts. It provides a total capacitance of 4.5 pF at 4 V reverse bias and 5.5 pF at 2 V, yielding a capacitance ratio of 10:1. The device exhibits a minimum quality factor of 1500 at 4 V. Packaged in the hermetic ODS-1056 case style, it offers low leakage current and high reliability suitable for wide bandwidth voltage-controlled oscillators.

Feature Summary

• Hyperabrupt junction with constant gamma of 1.25
• Very high quality factor for optimal tuning performance
• Silicon nitride protected junctions for low leakage current
• Hermetic packaging available for screening to JANTX levels

Applications

• Wide bandwidth voltage-controlled oscillators (VCOs)
• Voltage-tuned filters (VTFs) requiring wide tuning range
• RF circuits demanding high quality factors

Procurement Notes

Verify the specific ordering suffix matches the required package style, as the datasheet indicates availability in multiple case styles. Confirm that the component meets environmental compliance standards such as RoHS if applicable to the target assembly process. Ensure proper handling procedures are followed during installation to maintain device integrity.

Selection Notes

Select this component when designing circuits that require a wide tuning range combined with a high quality factor. The 1.25 gamma characteristic makes it distinct from the 0.75 and 1.5 gamma families. Evaluate the total capacitance and breakdown voltage requirements against the specific operating conditions of the application to ensure compatibility.

Part Context

This part belongs to the MA46H200 through MA46H204 family of GaAs tuning varactors. These devices share the same hyperabrupt junction characteristics but differ in total capacitance values. The series is designed to provide low-cost surface mount solutions for RF tuning applications requiring reliable performance across varying temperature ranges.

Replacement Considerations

Direct substitutes within the same family include MA46H200, MA46H201, MA46H202, and MA46H204, which offer different capacitance values but identical electrical characteristics. Alternative case styles such as 1088 may be considered if hermetic sealing is not required.