SMV1255-011LF

Overview

The SMV1255-011LF is a silicon hyperabrupt junction tuning varactor diode from the Skyworks SMV1247-SMV1255 series, designed for low tuning voltage Voltage Controlled Oscillator (VCO) applications. It utilizes an SOD-323 package with a typical series inductance of 1.5 nH. The device operates within a reverse voltage range up to 15 V and supports forward currents up to 20 mA. At 1 V reverse bias, it exhibits a typical capacitance of 43.27 pF, dropping to 8.51 pF at 3 V. The component features a typical capacitance ratio of 12.3 between 0.3 V and 4.7 V, with a maximum power dissipation of 250 mW and an operating temperature range of -55°C to +125°C.

Feature Summary

• Hyperabrupt junction design optimized for high capacitance ratios suitable for low tuning voltage VCOs
• Characterized for capacitance and resistance performance across specified temperature ranges
• RoHS compliant lead-free packaging rated for Moisture Sensitivity Level 1

Applications

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

Procurement Notes

Verify current availability status as discontinuation notifications exist for this product line. Confirm RoHS compliance documentation via the manufacturer's Certificate of Conformance. Ensure handling procedures adhere to ESD precautions and moisture sensitivity guidelines during solder assembly to prevent reliability issues.

Selection Notes

Select based on required capacitance values at specific reverse voltages and the necessary package type. The SMV1255 offers higher capacitance compared to lower-numbered series members. Verify that the SOD-323 footprint and 1.5 nH series inductance align with the target circuit layout and frequency requirements.

Part Context

This component belongs to the SMV1247-SMV1255 family of silicon hyperabrupt junction varactors. These devices are engineered for commercial applications requiring precise tuning characteristics. The series provides multiple package options including SOT-23, SOD-323, SC-70, and SC-79 to accommodate various design constraints.

Replacement Considerations

SMV1255-040LF and SMV1255-079LF share identical electrical specifications but utilize different packages (SOD-882 and SC-79 respectively). Direct pin-compatible substitution requires matching the package outline and series inductance parameters.