SMV1299-004LF

Overview

The SMV1299-004LF is a silicon hyperabrupt junction varactor diode manufactured by Skyworks Solutions, Inc. It is housed in an SOT-363 surface-mount package and operates with a common cathode configuration. The device supports a reverse voltage of 22 V and offers a capacitance range from 0.5 pF to 2.8 pF at zero bias. Key electrical parameters include a maximum series resistance of 1.5 ohms and a quality factor exceeding 100 at 900 MHz. It functions within a temperature range of -55°C to +125°C and is designed for RF tuning applications up to 6 GHz.

Feature Summary

• Hyperabrupt junction profile provides high capacitance ratio for wide tuning range
• Low series resistance ensures minimal signal loss in RF paths
• High Q-factor maintains signal integrity at microwave frequencies

Applications

• Voltage-controlled oscillators (VCOs)
• RF filters and tunable matching networks
• Phase-locked loops (PLLs)

Procurement Notes

Verify the specific ordering suffix against official Skyworks documentation to confirm pinout and packaging details. Confirm RoHS compliance status through current datasheets. Check for product discontinuation notices as availability may be limited. Ensure the component meets environmental specifications for the intended operating temperature range before integration.

Selection Notes

Select this component when a high capacitance ratio is required for broad frequency tuning in compact designs. The SOT-363 package suits space-constrained PCB layouts. Compare series resistance and Q-factor requirements against circuit performance needs. Verify that the 22 V reverse voltage rating aligns with the maximum control voltage in the application.

Part Context

This part belongs to the SMV12xx series of silicon hyperabrupt varactor diodes from Skyworks Solutions. These components are engineered for RF and microwave circuits requiring precise capacitance control via voltage. The series is widely used in wireless communication systems where low insertion loss and stable tuning characteristics are critical for system performance.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. Consult Skyworks technical support or authorized distributors for validated cross-references. Ensure any replacement matches the package type, pin configuration, and electrical specifications exactly.