MMBV2109LT1G

Overview

The MMBV2109LT1G is a silicon tuning diode from the MMBV2101LT1 series, designed for FM radio and TV tuning applications. It operates within a reverse voltage range of 30 Vdc and supports a forward current of 200 mAdc. The device features a standard capacitance tolerance of 10%, with a nominal capacitance of 33 pF measured at 4.0 Vdc and 1.0 MHz. Its typical tuning ratio (C2/C30) ranges from 2.5 to 3.0, while the figure of merit (Q) reaches a minimum of 200 at 50 MHz. Packaged in SOT-23, it provides solid-state reliability as a replacement for mechanical tuning methods.

Feature Summary

• High Q factor for improved signal selectivity
• Controlled and uniform tuning ratio across operating voltages
• Standard 10% capacitance tolerance for predictable circuit behavior

Applications

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

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance. Confirm availability status directly with authorized distributors or the manufacturer, as supply levels fluctuate. Ensure the component meets RoHS requirements if applicable to your design specifications before finalizing procurement orders.

Selection Notes

Select this component when a nominal capacitance near 33 pF is required for high-frequency tuning applications. Consider the SOT-23 package for surface mount designs requiring compact footprints. Evaluate the tuning ratio and Q factor against your specific bandwidth and selectivity requirements to ensure optimal performance in RF front-end circuits.

Part Context

This part belongs to the MMBV2101LT1 series, which includes various capacitance values ranging from 6.8 pF to 100 pF. All devices in this series share similar electrical characteristics and packaging options, differing primarily in their nominal capacitance values. The series is engineered to replace mechanical tuning capacitors in consumer electronics.

Replacement Considerations

Direct replacements include other members of the MMBV2101LT1 series such as MMBV2107LT1G or MV2109. Verify that substitute parts match the required capacitance and package style. Cross-reference datasheets to ensure equivalent tuning ratios and maximum ratings are maintained in the new component.