SMV1281-079LF

Overview

The SMV1281-079LF is a surface mount hyperabrupt junction tuning varactor diode manufactured by Skyworks Solutions Inc. It is designed for high capacitance tuning ratios with low series resistance, making it suitable for wideband voltage controlled oscillator (VCO) applications. The device operates within a reverse voltage range of 0 to 24 V and features a typical capacitance ratio of 12 at VR = 1 V/20 V. Electrical specifications include a maximum reverse current of 20 nA at 20 V and a breakdown voltage of 24 V. The component is housed in an SC-79 package.

Feature Summary

• Hyperabrupt junction design optimized for very high capacitance tuning ratios
• Low series resistance characteristics supporting wideband VCO performance
• Moisture sensitivity rated MSL1 at 260 °C per JEDEC J-STD-020

Applications

• Wideband Voltage Controlled Oscillators (VCOs)
• High-volume, low-cost RF systems

Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm the exact package type. Datasheet references indicate the -011 suffix corresponds to SOD-323 packaging; ensure the -079 variant matches the required footprint before procurement. Confirm RoHS compliance status via the manufacturer's Certificate of Conformance.

Selection Notes

Select this component when designing circuits requiring high capacitance tuning ratios combined with low series resistance. Verify that the operating temperature range of –55 °C to +125 °C aligns with system requirements. Ensure the 24 V reverse voltage rating accommodates the maximum expected bias conditions.

Part Context

This part belongs to the SMV1281 series of hyperabrupt junction tuning varactors from Skyworks Solutions. The series is engineered for high-volume commercial applications utilizing surface mount plastic packages. These devices are specifically intended for RF and microwave environments where precise frequency tuning is critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.