SMV1494-079LF

Overview

The SMV1494-079LF is a silicon abrupt junction tuning varactor diode housed in hermetic ceramic packaging. It features a voltage breakdown of 12 V at 10 mA and a total capacitance range from 36.35 pF to 41.85 pF at 1 V, and 20.67 pF to 25.35 pF at 4 V. The series resistance is 0.45 Ω at 1 V and 500 MHz. Operating temperatures span from -55 °C to +125 °C with a storage limit up to +150 °C.

Feature Summary

• Designed for Voltage Controlled Oscillators requiring tight capacitance tolerances
• Low series resistance suitable for high-Q resonators in wireless systems
• Hermetically sealed ceramic package rated MSL1 and 260 °C per JEDEC J-STD-020

Applications

• RF and UHF Voltage Controlled Oscillators (VCOs)
• Voltage tuned filters
• Voltage variable phase shifters

Procurement Notes

Verify the specific suffix against official datasheets, as the provided documentation lists -203, -210, -219, and -240 packages. Confirm that the requested component matches the hermetic ceramic construction and electrical specifications before procurement. Ensure handling procedures account for electrostatic discharge sensitivity.

Selection Notes

Select this component when applications demand hermetic sealing and precise capacitance control for RF and UHF circuits. The low series resistance supports high-frequency performance beyond 20 GHz. Verify package dimensions and lead inductance requirements against the available hermetic options.

Part Context

The SMV1494 belongs to a family of silicon abrupt junction tuning varactors manufactured by Skyworks Solutions Inc. These devices are engineered for high-frequency stability and reliability in demanding environments. The hermetic packaging ensures long-term performance in critical RF applications where standard plastic packages may be insufficient.

Replacement Considerations

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