SMV1273-079LF

Overview

The SMV1273-079LF is a silicon hyperabrupt junction tuning varactor diode designed for battery operation. It features a low-series resistance of 0.8 Ω at 470 MHz and a high capacitance ratio of 7.0. The device operates within a reverse voltage range up to 29 V, with a typical breakdown voltage of 29 V. Capacitance values range from 16.9 pF at 25 V to 13.6 pF at 2 V. Packaged in an ultra-small SC-79 (SOD-523) format with an internal series inductance of 0.7 nH, it supports operating temperatures from -55 °C to +125 °C.

Feature Summary

• Hyperabrupt junction design optimized for low phase-noise voltage-controlled oscillators
• Ultra-small SC-79 package suitable for space-constrained wireless systems
• Lead-free, RoHS-compliant construction

Applications

• Low-noise and wideband UHF and VHF VCOs
• GSM, PCS, CDMA, and analog phone systems
• Wireless systems operating up to and above 2.5 GHz

Procurement Notes

Verify the specific datasheet revision against the manufacturer's official documentation before finalizing designs. Confirm that the SC-79 tape and reel packaging meets standard handling requirements. Ensure compliance with Moisture Sensitivity Level 1 guidelines during solder assembly to prevent moisture absorption issues.

Selection Notes

Select this component when a high capacitance ratio and low series resistance are required for frequency tuning applications. The 0.7 nH internal inductance must be accounted for in RF circuit simulations. Verify that the 29 V maximum reverse voltage rating aligns with the system's biasing requirements.

Part Context

This part belongs to the Skyworks SMV1273 series of hyperabrupt junction tuning varactors. The '079' suffix indicates the specific SC-79 surface-mount package configuration. The 'LF' designation confirms lead-free manufacturing compliant with RoHS standards.

Replacement Considerations

No public confirmed substitute part numbers are documented for this component.