SMV1430-079LF

Overview

The SMV1430-079LF is a silicon abrupt junction tuning varactor diode designed for Voltage Controlled Oscillators (VCOs) requiring tight capacitance tolerances. It operates at frequencies above 10 GHz with low series resistance suitable for high-Q resonators. The device features a reverse voltage of 30 V, forward current of 20 mA, and power dissipation of 250 mW. Capacitance ranges from 1.01 pF at 0.5 V to 0.88 pF at 1 V, with a minimum ratio of 3.8 between 0 V and 30 V. Series resistance is 3.15 Ω at 4 V and 500 MHz, yielding a Q factor of 1680 at 4 V and 50 MHz.

Feature Summary

• High Q performance for wireless system VCOs
• Low series resistance for reduced phase noise
• Tight capacitance tolerance for precise tuning

Applications

• High-Q resonators in wireless system VCOs
• High volume commercial systems

Procurement Notes

Verify component authenticity through authorized distributors or Skyworks directly. Confirm RoHS compliance and lead-free status via the datasheet. Check for ESD protection requirements during handling. Ensure storage conditions meet MSL1 standards before soldering.

Selection Notes

Select based on required capacitance range and operating frequency. Verify that the 30 V reverse voltage meets circuit biasing needs. Consider the 3.15 Ω series resistance impact on phase noise. Ensure thermal management supports 250 mW power dissipation within the specified temperature range.

Part Context

Part of the SMV1405 to SMV1430 series of plastic packaged abrupt junction tuning varactors. Designed for VCO applications requiring tight capacitance tolerances and operation above 10 GHz. Characterized for capacitance over temperature variations.

Replacement Considerations

SMV1405-079LF, SMV1408-079LF, SMV1413-079LF are members of the same series but offer different capacitance values and electrical characteristics. Verify specific parameter compatibility before substitution.