MAVR-045446-0287AT

Overview

The MAVR-045446-0287AT 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 package with parasitics of 0.12 pF capacitance and 1.3 nH inductance. Electrical specifications at +25°C include a minimum breakdown voltage of 30 V at 10 mA reverse current and a maximum reverse leakage current of 100 nA at 24 V. The device exhibits a nominal total capacitance of 33 pF (range 29.7–36.3 pF), a typical capacitance ratio of 4.7, and a minimum Q factor of 750 measured at 4 V and 1 MHz.

Feature Summary

• Utilizes UHCVD/ion-implanted silicon technology for highly repeatable C vs. V and Q vs. V characteristics.
• Optimized for wide tuning efficiency across a 0 to 30 V reverse voltage range.
• Manufactured using an SPC process to ensure superior lot-to-lot repeatability.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official MACOM documentation to confirm the exact package style, internal configuration, and packaging format. Confirm RoHS compliance status and lead times directly with authorized distributors or the manufacturer prior to placing orders.

Selection Notes

Select this component when consistent performance across production lots is required for HF through UHF applications. Ensure the design accommodates the specified absolute maximum ratings, particularly the 30 V reverse voltage limit and thermal constraints during reflow soldering.

Part Context

This part belongs to the MAVR-0454xx Series of silicon abrupt tuning varactors. The series provides cost-effective surface mount solutions available in SOT-23 and SOT-323 packages, offering various capacitance values tailored for different tuning requirements within the same manufacturing platform.

Replacement Considerations

Other parts in the MAVR-0454xx series, such as the MAVR-045441-0287AT or MAVR-045448-0287AT, share identical package dimensions and mounting parameters but differ in capacitance values and Q factors.

FAQ

What are the electrical conditions for the Q factor specification?

The minimum Q factor of 750 is specified at a reverse voltage of 4 V and a frequency of 1 MHz.

What is the maximum operating temperature for this device?

The device supports an operating temperature range from -55°C to +125°C.

How does the MAVR-045446-0287AT achieve high repeatability?

It utilizes an SPC (Statistical Process Control) process combined with UHCVD/ion-implanted silicon technology to ensure superior consistency in capacitance and quality factor variations.