SMV1234-040LF

Overview

The SMV1234-040LF is a silicon hyperabrupt junction tuning varactor diode from the Skyworks SMV123x series, designed for low tuning voltage Voltage Controlled Oscillators (VCOs). It operates at frequencies over 10 GHz and features a typical capacitance of 6.5 pF at 1 V reverse bias with a minimum breakdown voltage of 15 V. The device exhibits a maximum series resistance of 0.80 Ω at 3 V and 500 MHz. It is housed in an SOD-882 package with a lead-free, RoHS-compliant construction.

Feature Summary

• High capacitance ratio suitable for wide tuning range applications
• Low series resistance optimized for minimizing phase noise in high-Q resonators
• Packages rated for Moisture Sensitivity Level 1 (MSL1) at 260 °C per JEDEC J-STD-020

Applications

• Low tuning voltage Voltage Controlled Oscillators (VCOs)
• High-Q resonators in wireless system VCOs
• High-volume commercial systems

Procurement Notes

Verify component authenticity by checking the marking code 'G' on the SOD-882 package against official Skyworks documentation. Confirm that the part number suffix '-040LF' corresponds to the specified SOD-882 Green™ package configuration. Ensure handling procedures strictly follow ESD precautions and moisture sensitivity guidelines during storage and soldering processes.

Selection Notes

Select this component when a specific capacitance value near 6.5 pF is required for VCO designs operating below 15 V reverse bias. The SOD-882 package provides a compact footprint with low parasitic inductance. Evaluate thermal management requirements as the device supports an operating temperature range up to +125 °C.

Part Context

The SMV1234-040LF belongs to the SMV123x family of hyperabrupt junction varactors. This series includes variants such as the SMV1231 through SMV1237, differentiated primarily by their nominal capacitance values ranging from approximately 1.5 pF to 45 pF. All members share similar electrical characteristics regarding series resistance and breakdown voltage profiles.

Replacement Considerations

Direct substitutes within the same series include the SMV1233-040LF and SMV1235-040LF, which utilize identical SOD-882 packaging but offer different capacitance values. Cross-series replacements require careful evaluation of capacitance ratios and series resistance impacts on circuit performance.