MAVR-000404-0287FT

Overview

The MAVR-000404-0287FT is a surface mount hyperabrupt junction silicon tuning varactor from the MAVR-000400 series, manufactured by MACOM Technology Solutions. It is housed in an SOT-23 package and features thermal oxide passivation with ion-implanted construction for excellent capacitance-voltage repeatability. The device operates within the HF to UHF frequency bands and supports octave bandwidth tuning. Electrical specifications at +25°C include a nominal total capacitance of 18.0 pF (range 16.2–19.8 pF), a typical capacitance ratio of 7.0, and a minimum quality factor of 175 at 50 MHz. Absolute maximum ratings specify a reverse voltage of 30 V, forward current of 50 mA, and power dissipation of 250 mW.

Feature Summary

• Ion-implanted hyperabrupt junction design providing high capacitance ratio and quality factor
• SPC monitored ion implantation ensures excellent lot-to-lot C-V repeatability
• RoHS compliant lead-free matte tin plating with 260 °C reflow compatibility

Applications

• Voltage controlled oscillators (VCOs)
• Voltage tuned filters in radio systems
• Cable TV tuners
• Test instruments requiring linear tuning performance

Procurement Notes

Verify component authenticity through authorized MACOM distributors or direct channels. Confirm RoHS compliance status and packaging configuration matches project requirements. Review application note M538 for proper surface mounting procedures and ESD handling precautions to prevent damage during assembly.

Selection Notes

Select this part for applications requiring octave bandwidth tuning in HF to UHF ranges. The FT suffix indicates a common cathode pair configuration; verify if single diodes are needed instead. Ensure circuit bias voltages align with the specified linear tuning range of 3 to 8 volts for optimal performance characteristics.

Part Context

This component belongs to the MAVR-000400 series of surface mount hyperabrupt varactors. Other variants in the series offer different base capacitances ranging from 9.0 pF to 47.0 pF. The series includes both single diode and common cathode pair configurations available in SOT-23 and SC-79 packages.

Replacement Considerations

Direct substitutes within the same series include MAVR-000404-0287AT (single configuration) or other capacitance variants like MAVR-000403-0287FT and MAVR-000405-0287FT. Verify pinout compatibility and electrical parameters before substitution.