SMV1245-079LF

Overview

The SMV1245-079LF is a hyperabrupt junction tuning varactor diode manufactured by Skyworks Solutions Inc. It features a single-diode configuration in an SC-79 surface-mount package with a parasitic series inductance of 0.7 nH. The device has a maximum reverse voltage rating of 26 V and operates within a temperature range of -55°C to +125°C. Electrical specifications include a typical capacitance of 4.9 pF at 1 V, a maximum series resistance of 2.0 Ω at 500 MHz, and a capacitance ratio of up to 4.20 between 1 V and 9 V.

Feature Summary

• Hyperabrupt junction design optimized for high tuning ratios
• Low series resistance suitable for RF and microwave applications
• RoHS compliant and halogen-free construction

Applications

• Wideband RF and microwave voltage-controlled oscillators (VCOs)

Procurement Notes

Verify the component status before procurement as this part may be discontinued or subject to change without notice. Confirm that the SC-79 package dimensions and marking codes match the required design specifications. Ensure ESD precautions are strictly followed during handling and assembly to prevent damage to the semiconductor junction.

Selection Notes

Select the SMV1245-079LF when low series resistance and high capacitance ratios are critical for wideband tuning applications. Compare the 0.7 nH inductance against the SMV1245-011LF variant if different parasitic characteristics are required. Verify that the 26 V breakdown voltage meets the circuit's reverse bias requirements.

Part Context

This component belongs to the SMV1245 series of hyperabrupt junction tuning varactors from Skyworks Solutions. The series includes variants such as the SMV1245-011LF, which differs primarily in its higher parasitic series inductance of 1.5 nH compared to the 0.7 nH found in the SMV1245-079LF.

Replacement Considerations

No officially confirmed substitute part numbers are documented in the provided datasheet.