MAVR-045440-0287AT

Overview

The MAVR-045440-0287AT is a silicon abrupt tuning varactor diode from the MAVR-0454xx series, designed for general-purpose tuning in HF to UHF frequency bands. It features a single configuration housed in an SOT-23 surface mount plastic package with 100% matte tin plating. The device utilizes a highly repeatable UHCVD/ion-implanted process for superior C vs. V and Q vs. V consistency. Key electrical specifications include a nominal total capacitance of 10 pF (range: 9–11 pF), a minimum capacitance ratio of 4.5, and a minimum quality factor of 1300 at 4 V reverse bias and 1 MHz. It operates within a 0–30 V tuning range, with a minimum breakdown voltage of 30 V.

Feature Summary

• Highly repeatable UHCVD/ion-implanted silicon construction ensures consistent performance across manufacturing lots.
• Abrupt junction profile optimized for efficient wide-range tuning across HF to UHF bands.
• Surface mount design available in cost-effective SOT-23 and SOT-323 packages.

Applications

• Voltage controlled oscillators (VCOs)
• Voltage tuned filters
• Radio tuners
• Cable TV tuners
• Test instruments

Procurement Notes

Verify the specific ordering suffix to confirm the exact package style, internal configuration, and packaging format required for your assembly line. Contact the manufacturer or authorized representatives directly to obtain current availability status and complete part identification details, as standard distributor listings may not reflect all variations.

Selection Notes

Select this component when a nominal capacitance of 10 pF and a high quality factor are required for HF/UHF applications. Ensure the circuit design accommodates the 30 V maximum reverse voltage rating and utilizes the recommended SOT-23 mounting pad configuration for reliable surface attachment.

Part Context

This component belongs to the MAVR-0454xx Series of silicon abrupt tuning varactors. The series offers various capacitance values ranging from approximately 4.7 pF to 51.7 pF, allowing designers to choose specific tuning characteristics while maintaining the same high-repeatability manufacturing process and surface mount form factors.

Replacement Considerations

Other members of the MAVR-0454xx series, such as the MAVR-045438-0287AT or MAVR-045441-0287AT, share identical package dimensions and parasitic parameters but offer different nominal capacitances. Verify that the alternative part's capacitance and Q-factor meet the specific circuit requirements before substitution.