MA46481-134

Overview

The MA46481-134 is a Gallium Arsenide hyperabrupt junction varactor diode from the MA464xx series, characterized by a constant gamma value of 1.25. It features a total capacitance of 4.7 pF at +/−10% tolerance and a minimum Q factor of 1500 at 4 V reverse bias and 50 MHz. The device operates within a reverse voltage range of 2 to 20 Volts, with a junction capacitance ratio (CJ2/CJ20) between 8.15 and 12.99. Breakdown voltage is specified at a minimum of 22 V at 10 µA reverse current, while maximum reverse leakage current is 100 nA at 18 V.

Feature Summary

• Constant gamma tuning for improved linearity
• High quality factor performance
• Hyperabrupt junction characteristics

Applications

• Voltage controlled oscillators
• Voltage tuned filters
• Analog phase shifters
• Modulator circuits

Procurement Notes

Verify component authenticity through authorized MACOM distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free packaging specifications prior to procurement. Ensure storage conditions adhere to MIL-STD-750 environmental ratings to maintain device integrity during handling and assembly processes.

Selection Notes

Select this component when linear frequency tuning is required across VHF to Ka band applications. The 1.25 gamma value offers a balance between capacitance variation and tuning linearity. Verify package parasitic capacitance impacts on total capacitance if using non-standard case styles like ODS-30.

Part Context

This part belongs to the MA464xx series of GaAs hyperabrupt varactors offering gamma values of 1.0, 1.25, and 1.5. The MA4648x sub-series specifically targets the 1.25 gamma specification. These devices are designed for high-performance RF tuning applications requiring stable electrical characteristics over wide voltage ranges.

Replacement Considerations

Equivalent lead-free versions are available with 260°C reflow compatibility. Verify pinout and package dimensions match existing designs when substituting. Check specific gamma tolerances against circuit requirements as other series members offer different gamma constants.