MAVR-045438-0287FT

Overview

The MAVR-045438-0287FT 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 common cathode configuration and is housed in an SOT-23 surface mount package with 100% matte tin plating. The device utilizes UHCVD/ion-implanted technology for high repeatability. Key electrical specifications include a nominal total capacitance of 6.8 pF (range 6.12–7.48 pF), a minimum capacitance ratio of 4.5 at VR = 4 V, and a minimum Q factor of 1600 at VR = 4 V and 1 MHz. Absolute maximum ratings specify a reverse voltage of 30 V and a forward current of 50 mA.

Feature Summary

• UHCVD/ion-implanted silicon construction ensures superior lot-to-lot repeatability for C vs. V and Q vs. V characteristics.
• Common cathode configuration within a cost-effective surface mount plastic package.
• RoHS compliant manufacturing with 100% matte tin plating.

Applications

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

Procurement Notes

Verify the specific suffix 'FT' to confirm the common cathode configuration and SOT-23 packaging style. Ensure compatibility with standard reflow soldering procedures, observing the recommended body temperature limits for RoHS compliant devices during assembly.

Selection Notes

Select this component when a common cathode topology is required for HF through UHF applications. The 6.8 pF nominal capacitance suits circuits needing moderate tuning ranges. Verify that the 30 V reverse voltage rating meets the circuit's peak bias requirements.

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, providing flexibility for different RF tuning designs.

Replacement Considerations

Other parts in the MAVR-0454xx series, such as MAVR-045438-0287AT, share identical electrical parameters but differ in configuration (Single vs. Common Cathode). Substitution requires verifying if the circuit topology supports the alternative pinout.

FAQ

What is the difference between the -0287FT and -0287AT suffixes?

The -0287FT suffix indicates a common cathode configuration, whereas the -0287AT suffix denotes a single diode configuration. Both use the SOT-23 package and share identical electrical specifications.

What is the minimum breakdown voltage for this device?

The minimum breakdown voltage is 30 V, measured at a reverse current of 10 mA.

Is this component suitable for lead-free soldering processes?

Yes, the device is RoHS compliant and features 100% matte tin plating, making it suitable for lead-free assembly processes.