MA46470-134

Overview

The MA46470-134 is a Gallium Arsenide hyperabrupt tuning varactor diode from the MA464xx series, featuring a constant gamma of 1.25. It provides a total capacitance of 0.5 pF at +/−10% tolerance and a minimum junction capacitance ratio of 2.2 (measured at VR = 2 V / 20 V). The device exhibits a minimum Q factor of 4000 at 50 MHz with a reverse voltage of 4 V. Electrical specifications are defined at TA = +25°C, with absolute maximum ratings including an operating temperature range of -65°C to +175°C and a breakdown voltage of 22 V minimum.

Feature Summary

• Constant gamma value of 1.25 enables more linear voltage-controlled oscillator frequency tuning compared to conventional hyperabrupt varactors.
• High quality factor (Q) up to 4000 permits excellent tuning performance across VHF through Ka band frequencies.
• Hyperabrupt junction design offers high and nearly constant modulation sensitivity for efficient signal processing.

Applications

• Voltage tuned filters
• Analog phase shifters
• Modulator circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package style and compliance status. Ensure the requested variant matches the required gamma value and electrical tolerances for the intended RF application. Confirm RoHS compliance and reflow compatibility requirements prior to finalizing procurement orders.

Selection Notes

Select this component when a constant gamma of 1.25 is required for linear frequency tuning in VHF to Ka band designs. The low 0.5 pF capacitance makes it suitable for high-frequency applications where minimal parasitic effects are critical. Evaluate the Q factor and breakdown voltage against circuit bias conditions to ensure reliable operation within the specified temperature range.

Part Context

This part belongs to the MACOM MA464xx series of GaAs hyperabrupt tuning varactors. The series includes variants with constant gammas of 1.0, 1.25, and 1.5 to support different linearity requirements. The MA4647x sub-series specifically targets the 1.25 gamma specification, offering high Q factors and precise capacitance control for advanced RF tuning applications.

Replacement Considerations

Direct substitutes include other parts within the MA464xx series with matching gamma values, such as the MA46471 or MA4648x series, depending on capacitance needs. Verify that alternative components maintain the same package outline dimensions and electrical characteristics to ensure circuit compatibility without redesign.