MA46603-120

Overview

The MA46603-120 is a GaAs abrupt junction tuning varactor from the MA46600 series, designed for broadband high Q performance up to Ka-band. It features a constant gamma of 0.5 and a minimum breakdown voltage of 30 V at 10 μA. Electrical specifications include a total capacitance of 0.6 pF (±10%), a capacitance ratio of 2.8, and a minimum Q factor of 6500 at -4 V and 50 MHz. The device operates within a temperature range of -65°C to +175°C.

Feature Summary

• High Q factor exceeding 6500 at -4 volts and 50 MHz
• Abrupt junction design with constant gamma of 0.5
• Large capacitance variation with applied voltage
• Low leakage current characteristics

Applications

• Solid state tuning of Voltage Controlled Oscillators (VCOs)
• Voltage tunable filter circuits
• Amplifier tuning circuits
• Broadband and narrow band tuning through Ka-band

Procurement Notes

Verify the specific case style suffix required for the application, as standard capacitance matching is ±10% but closer matching is available upon request. Confirm package availability, as devices are offered in ceramic packages or chip form. Ensure ordering documentation specifies the desired case designation appended to the model number to guarantee correct electrical parameters.

Selection Notes

Select this component when high Q factors are critical for L through Ka-band applications. The MA46603 offers a 0.6 pF total capacitance and a 2.8 capacitance ratio. Consider case parasitics if precise tuning is required, as values vary by package. Verify that the 30 V breakdown voltage meets the circuit's reverse voltage requirements.

Part Context

The MA46603-120 belongs to the MA46600 series of microwave tuning varactors manufactured by MACOM. This family utilizes gallium arsenide technology to deliver high reliability and low leakage. The series is engineered for premium high-frequency applications where quality factor is a primary design constraint.

Replacement Considerations

Other models in the MA46600 series, such as the MA46600, MA46602, and MA46604, share identical electrical characteristics except for total capacitance and Q factor values. Selection depends on whether the specific capacitance and Q requirements align with alternative part numbers.