SMV2026-040LF

Overview

The SMV2026-040LF is a silicon surface-mount hyperabrupt tuning varactor diode manufactured by Skyworks Solutions, Inc. It is housed in an ultrasmall SOD-882 package with a series inductance of 0.45 nH. The device features a minimum capacitance ratio of 2.0 from 2 V to 10 V reverse bias. Electrical specifications include a maximum reverse current of 20 nA at 15 V and a breakdown voltage of 15 V. Typical capacitance values are 14.0 pF at 2 V and 5.5 pF at 10 V. Series resistance is typically 0.5 Ω at 470 MHz with 5 V reverse bias.

Feature Summary

• Low series resistance and leakage current for low phase-noise VCOs
• High-capacitance ratio: CT (2 V)/CT (10 V) = 2.0 minimum
• Broad 15-V tuning range
• SC-79 and ultrasmall SOD-882 packages

Applications

• Wide-bandwidth and low phase-noise VCOs
• Wide-range, voltage-tuned phase shifters and filters
• Miniature RF and microwave tuners

Procurement Notes

Verify the component against the official Skyworks data sheet to confirm the SOD-882 package marking EC1 and the specific electrical parameters. Ensure that the procurement channel provides documentation confirming RoHS compliance and lead-free status as indicated by the LF suffix. Cross-reference the part number with the manufacturer's latest discontinuation notices to ensure availability aligns with production timelines.

Selection Notes

Select this component when designing circuits requiring a high capacitance ratio for wide bandwidth applications. The SOD-882 package offers very low parasitic inductance compared to larger packages. Verify that the operating voltage remains within the 15 V reverse voltage limit. Consider the thermal dissipation capabilities if the application involves significant power levels near the maximum ratings.

Part Context

The SMV2026-040LF belongs to the SMV2026 series of surface-mount silicon hyperabrupt tuning varactor diodes. This series includes variants like the SMV2026-079LF which utilizes an SC-79 package. Both share similar electrical characteristics but differ in physical dimensions and parasitic inductance values. The series is designed for RF and microwave tuning applications where compact size and performance are critical.

Replacement Considerations

The datasheet notes competitive cross compatibility with Toshiba 1SV179 varactor diodes. Verify pinout alignment and exact capacitance curves before substitution. Ensure the replacement component meets the same SOD-882 package requirements and electrical limits specified in the original design.