MV2105

Overview

The MV2105 is a silicon voltage variable capacitance diode designed for FM radio and TV tuning applications. It provides solid-state reliability as a replacement for mechanical tuning methods. The device operates with a maximum reverse voltage of 30 Vdc and a forward current rating of 200 mAdc. Key electrical characteristics include a typical diode capacitance of 16.5 pF at 4 Vdc and 1.0 MHz, a figure of merit (Q) of 400 at 4 Vdc and 50 MHz, and a tuning ratio of 2.9. The component supports junction temperatures up to +150°C and is housed in a TO-92 package.

Feature Summary

• High Q factor for improved circuit performance
• Controlled and uniform tuning ratio
• Standard capacitance tolerance of 10%
• Pb-free packages available

Applications

• FM Radio tuning circuits
• TV tuning and AFC applications
• General frequency control systems

Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number MV2105 refers to the standard bulk packaging variant. For lead-free compliance, ensure the 'G' suffix is included in the order code. Confirm package style and shipping quantity requirements match the design specifications before finalizing procurement.

Selection Notes

Select the MV2105 based on required capacitance values and operating frequencies. Ensure the reverse voltage ratings align with the circuit's maximum bias conditions. Consider the thermal dissipation limits if operating at elevated ambient temperatures. Verify that the package type meets the board layout constraints.

Part Context

The MV2105 belongs to the MMBV2101LT1 series of silicon tuning diodes manufactured by onsemi. This series includes variants such as the MMBV2101, MV2101, MV2109, and LV2209, offering different capacitance ranges from 6.8 pF to 100 pF while maintaining similar electrical characteristics and package options for flexible design integration.

Replacement Considerations

Direct replacements within the same family include the MV2101 and MV2109, provided their capacitance values suit the application. Surface-mount equivalents like the MMBV2105LT1 are available but require PCB layout adjustments due to the SOT-23 package.