MV209

Overview

The MV209 is a silicon epitaxial planar varactor diode designed for general frequency control and tuning applications. It serves as a solid-state replacement for mechanical tuning methods, offering high Q with guaranteed minimum values at VHF frequencies and a controlled, uniform tuning ratio. The device features a reverse voltage rating of 30 Vdc and a forward current capability of 200 mAdc. Electrical characteristics include a diode capacitance range of 26–32 pF measured at 3.0 Vdc and 1.0 MHz, with a maximum reverse leakage current of 0.1 µA at 25 Vdc. The junction temperature limit is +125°C, and the storage temperature range spans from -55°C to +150°C.

Feature Summary

• High Q factor with guaranteed minimum values at VHF frequencies
• Controlled and uniform tuning ratio for consistent performance
• Solid-state reliability replacing mechanical tuning methods

Applications

• General frequency control circuits
• Voltage-controlled tuning applications
• VHF frequency oscillator circuits

Procurement Notes

Verify component authenticity by checking markings against official datasheet diagrams. Confirm package style matches TO-92 or SOT-23 requirements. Ensure ordering suffixes align with specific packaging needs such as tape and reel or bag quantities. Validate RoHS compliance status if required by project specifications before finalizing procurement decisions.

Selection Notes

Select the MV209 when designing circuits requiring reliable solid-state tuning at VHF frequencies. Consider the 30 Vdc reverse voltage rating and 200 mAdc forward current limits during circuit design. Evaluate the 26–32 pF capacitance range to ensure it meets the specific tuning requirements of the target application. Verify thermal management capabilities within the specified operating temperature ranges.

Part Context

The MV209 belongs to the Silicon Epicap Diodes family produced by onsemi. This series focuses on providing robust semiconductor solutions for frequency control and tuning tasks. The component is categorized under preferred devices, indicating its suitability for future use and overall value in electronic designs requiring stable varactor performance.

Replacement Considerations

MMBV109LT1 is an equivalent surface mount variant available in the SOT-23 package. Both components share identical electrical characteristics and functionality. Select the MMBV109LT1 when PCB space constraints necessitate a surface mount technology solution instead of the through-hole TO-92 package used by the MV209.