MA47222

RF Diode Overview

The MA47222 is a stripline PIN diode switch module from the MACOM MA47200 series, housed in an ODS-144 hermetically sealed package. It operates at a test frequency of 8 GHz with a maximum insertion loss of 0.50 dB and minimum isolation of 20 dB under specified bias conditions (VR = 0V, IF = 100mA). The device features a nominal switching speed of 100 ns for RF Off to RF On transitions and 30 ns for RF On to RF Off. Electrical characteristics include a maximum reverse voltage of 150 V, chip capacitance of 0.09 pF, and series resistance ranging from 1.6 Ω to 1.2 Ω.

RF Diode Feature Summary

• Hermetically sealed stripline package optimized for 50 ohm microstrip or stripline circuits without external matching requirements.
• High power handling capability with voltage ratings up to 1000 V across the series.
• Fast switching speeds suitable for broadband applications from VHF through X Band.

RF Diode Applications

• Single Pole Single Throw (SPST) reflective switch operation
• Variable attenuator implementation via DC bias control
• Broadband RF signal routing in military and aerospace systems

RF Diode Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to ensure correct package style and electrical tolerances. Confirm RoHS compliance status and environmental screening levels such as MIL-STD-750 Group B or C testing if required for your application. Check for any recent product change notifications that may affect pin compatibility or performance specifications.

RF Diode Selection Notes

Select the MA47222 when high isolation and low insertion loss are critical at frequencies around 8 GHz. Consider the 150 V reverse voltage rating and 13 µs carrier lifetime for specific switching speed requirements. Compare with other series members like the MA47208 or MA47223 if different breakdown voltages or switching times better suit the system design constraints.

RF Diode Part Context

This component belongs to the MA47200 series of stripline PIN diode switch modules manufactured by MACOM Technology Solutions. The series offers various configurations with different breakdown voltages and switching speeds, all sharing a common hermetically sealed strip-line package design optimized for high-power RF applications.

RF Diode Replacement Considerations

Direct replacements within the same family include the MA47208 and MA47223. Verify that the alternative part number meets the required isolation, insertion loss, and switching speed specifications for the 8 GHz operating point. Ensure package compatibility and thermal resistance values align with the existing board layout and cooling provisions.