SMV1251-079LF

Overview

The SMV1251-079LF is a silicon hyperabrupt junction tuning varactor diode from Skyworks Solutions, designed for low tuning voltage Voltage Controlled Oscillators (VCOs). It features a typical capacitance ratio of 12 at C0.3V/C4.7V and operates within a reverse voltage range up to 15 V. The device has a maximum forward current of 20 mA and power dissipation of 250 mW. Electrical specifications include a typical series resistance of 1.6 Ω at 3 V and 50 MHz, with a Q factor of 400 under the same conditions. Operating temperature ranges from -55 °C to +125 °C.

Feature Summary

• Hyperabrupt junction design optimized for low tuning voltage VCO applications
• High capacitance ratio characteristic for wide frequency tuning range
• Moisture Sensitivity Level 1 rated for high-temperature soldering processes

Applications

• Low tuning voltage Voltage Controlled Oscillators (VCOs)
• High-volume commercial RF systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via the official Certificate of Conformance. Ensure proper ESD handling protocols are followed during storage and assembly to prevent damage to the semiconductor junction.

Selection Notes

Select this component when a high capacitance ratio is required for broad tuning bandwidth in VCO designs. Verify that the 15 V reverse voltage rating meets the circuit's peak reverse requirements. Consider the SC-79 package dimensions for PCB layout compatibility and confirm thermal management aligns with the specified operating temperature limits.

Part Context

This part belongs to the SMV1247-SMV1255 series of hyperabrupt junction varactors. It shares common electrical characteristics and package options with siblings like the SMV1247 and SMV1255, differentiated primarily by specific capacitance values and ratios tailored for distinct tuning requirements.

Replacement Considerations

SMV1247-079LF, SMV1255-079LF