MAVR-045436-1146FT

Overview

The MAVR-045436-1146FT is a silicon abrupt tuning varactor diode from the MAVR-0454xx series, manufactured by MACOM Technology Solutions. It utilizes UHCVD/ion-implanted technology and is housed in an SOT-323 surface mount plastic package with a common cathode configuration. The device features a nominal total capacitance of 6.8 pF at zero bias, with a minimum capacitance ratio of 4.5 (CT0V/CT30V) measured at 1 MHz. Electrical specifications include a breakdown voltage of 30 V minimum at 10 mA reverse current and a maximum reverse leakage current of 100 nA at 24 V. Package parasitics are defined as 0.11 pF parallel capacitance and 1.2 nH series inductance.

Feature Summary

• UHCVD/ion-implanted silicon construction for superior lot-to-lot repeatability
• Abrupt junction profile optimized for wide tuning ranges across HF to UHF bands
• Surface mount packaging with 100% matte tin plating for reliable soldering

Applications

• Voltage controlled oscillators (VCOs)
• Voltage tuned filters in radio systems
• Cable TV tuners
• Test instruments requiring precise frequency adjustment

Procurement Notes

Verify the specific ordering suffix against official MACOM documentation to confirm the exact package style, internal configuration, and reel packaging details. Ensure compliance with RoHS directives and confirm that the component meets the required operating temperature range of -55°C to +125°C for your intended application environment before finalizing procurement.

Selection Notes

Select this component when designing circuits within the HF through UHF frequency spectrum that demand high capacitance consistency between manufacturing lots. The common cathode configuration in the SOT-323 package is suitable for space-constrained designs. Evaluate the 4.5 capacitance ratio and 6.8 pF nominal value to ensure it aligns with the required tuning bandwidth and impedance matching characteristics of the target circuit topology.

Part Context

This part belongs to the MAVR-0454xx series of silicon abrupt tuning varactors. The series offers various capacitance values and configurations, including single and common cathode options in SOT-23 and SOT-323 packages. The MAVR-045436-1146FT specifically represents the 6.8 pF variant in the smaller SOT-323 footprint, providing a balance of performance and compact size for general-purpose RF tuning applications.

Replacement Considerations

Direct substitutes within the same series include other MAVR-0454xx variants with compatible capacitance and package styles. Verify pinout compatibility and electrical parameters such as breakdown voltage and Q-factor when considering alternative manufacturers or different capacitance values within the family.