SMV1255-001LF

Overview

The SMV1255-001LF is a silicon hyperabrupt junction tuning varactor diode from the Skyworks SMV1247-SMV1255 series, housed in a Green™ SOT-23 package. It features a typical capacitance of 64 pF at 0.3 V reverse bias and 5.8 pF at 4.7 V. The device supports a maximum reverse voltage of 15 V and operates within a temperature range of -55°C to +125°C. Key electrical characteristics include a typical capacitance ratio of 12.3 ([email protected]/[email protected]) and a series resistance of 1.0 Ω at 3 V and 500 MHz.

Feature Summary

• Hyperabrupt junction design optimized for low tuning voltage Voltage Controlled Oscillator (VCO) applications
• High capacitance ratio with typical value of 12 for efficient frequency tuning
• RoHS compliant Green™ packaging rated for Moisture Sensitivity Level 1 (MSL1)
• Characterized for capacitance and resistance performance over extended temperature ranges

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and Green™ packaging status against current Skyworks Certificates of Conformance. Ensure handling procedures adhere to ESD precautions and MSL1 moisture sensitivity guidelines during storage and soldering processes.

Selection Notes

Select this component when high capacitance values are required alongside low series resistance for improved phase noise performance. The SOT-23 package suits space-constrained designs. Verify that the 15 V reverse voltage rating aligns with the specific tuning voltage requirements of the target circuit application.

Part Context

This part belongs to the SMV1247-SMV1255 family of silicon hyperabrupt junction varactors. These devices are engineered for commercial RF applications requiring precise capacitance control. The SMV1255 variant specifically offers higher baseline capacitance compared to lower-numbered siblings like the SMV1247, making it suitable for different frequency band implementations.

Replacement Considerations

SMV1255-011LF: Identical electrical specifications but utilizes an SOD-323 package instead of SOT-23. Ensure footprint compatibility before substitution. Other series members like SMV1253 offer similar functionality with different capacitance values.