MA46473-134

Overview

The MA46473-134 is a Gallium Arsenide hyperabrupt junction varactor diode from the MA464xx series, designed for VHF through Ka band applications. It features a constant gamma value of 1.25, enabling more linear voltage-controlled oscillator frequency tuning compared to conventional hyperabrupt varactors. The device offers high Q factors up to 4000 at -4 Volts and nearly constant modulation sensitivity. Electrical specifications include a total capacitance of 1.2 pF ±10% at VR = 4 V (f = 1 MHz), a minimum Q of 3000 at VR = 4 V (f = 50 MHz), and a breakdown voltage of 22 V minimum. It is housed in an ODS-134 ceramic package.

Feature Summary

• Constant gamma value of 1.25 for improved linearity in VCO frequency tuning
• High quality factor reaching up to 4000 at -4 Volts bias
• Hyperabrupt junction characteristic providing large capacitance change versus bias voltage
• Lead-free construction with RoHS compliance and 260°C reflow compatibility

Applications

• Voltage tuned filters
• Analog phase shifters
• Modulator circuits
• VHF through Ka band tuning applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct package style and tolerance. Confirm that the required gamma value matches the design specification, as the MA464xx series includes variants with different gamma constants. Check for availability of capacitance matching services if tighter tolerances are required for the application.

Selection Notes

Select this component when a constant gamma of 1.25 is required for linear tuning characteristics. Ensure the operating frequency range aligns with the device's performance from VHF to Ka band. Consider the total capacitance value of 1.2 pF and the available reverse voltage range of 2 to 20 Volts for circuit design compatibility.

Part Context

This part belongs to the MACOM MA464xx series of GaAs hyperabrupt varactor diodes. The series is categorized by constant gamma values of 1.0, 1.25, and 1.5. The MA4647x sub-series specifically provides the 1.25 gamma characteristic, distinguishing it from the MA4645x/MA4646x (gamma 1.0) and MA4641x/MA4642x (gamma 1.5) families.

Replacement Considerations

Direct substitutes within the same gamma family include other parts from the MA4647x series such as MA46470, MA46471, MA46472, MA46474, MA46477, MA46479, MA46480, MA46481, MA46483, MA46485, and MA46481. Selection depends on matching the required total capacitance and Q factor specifications.