MV2111

Overview

The onsemi MV2111 is a single variable capacitance diode (varactor) designed for RF tuning applications. It features a breakdown voltage of 30 V and a typical capacitance of 42.3 pF at zero bias. The device utilizes an abrupt junction profile to achieve a minimum capacitance ratio of 2.5, ensuring effective frequency modulation capabilities. Packaged in the TO-92 through-hole format, it supports a diode capacitance tolerance of 10%. This component is suitable for circuits requiring precise voltage-controlled reactance within standard operating temperature ranges.

Feature Summary

• Single varactor configuration with abrupt junction characteristics
• Capacitance ratio of 2.5 for efficient frequency control
• 30 V breakdown voltage rating for reliable operation
• TO-92 through-hole package for easy integration

Applications

• Voltage-controlled oscillators (VCOs)
• RF tuning circuits
• Frequency modulation modules
• Phase-locked loops (PLLs)

Procurement Notes

Verify the specific datasheet version when sourcing, as historical documentation may vary between ON Semiconductor and onsemi branding. Confirm the TO-92 package style matches your PCB requirements. Ensure the abrupt junction type aligns with your circuit's Q-factor needs. Cross-reference part numbers carefully to distinguish this varactor from other MV-series components.

Selection Notes

Select the MV2111 when an abrupt junction profile is required for higher tuning sensitivity compared to hyperabrupt types. The 42.3 pF nominal capacitance suits mid-range RF frequencies. Consider the 10% tolerance if tight matching is not critical. The TO-92 package is ideal for prototyping or low-volume production where surface-mount space is not constrained.

Part Context

This component belongs to the discrete semiconductor category, specifically under variable capacitance diodes. It serves as a passive tuning element rather than an active switching device. Unlike digital transistors in the same manufacturer's lineup, it provides analog reactance control. Its classification focuses on RF performance metrics such as capacitance variation and reverse leakage current.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with generic varactors by matching the 30 V breakdown voltage, 42.3 pF capacitance, and TO-92 package dimensions before substitution.