SMV1235-011LF

Overview

The SMV1235-011LF is a silicon hyperabrupt junction tuning varactor diode from the Skyworks SMV123x series, designed for low tuning voltage Voltage Controlled Oscillators (VCOs). It features a single configuration in an SOD-323 package with a parasitic series inductance of 1.5 nH. The device supports a maximum reverse voltage of 15 V and a forward current of 20 mA. Typical capacitance values are 12.65 pF at 1 V and 6.40 pF at 3 V, yielding a capacitance ratio of approximately 2.0 at 1 V to 3 V. Series resistance is typically 0.60 Ω at 3 V and 500 MHz.

Feature Summary

• Hyperabrupt junction design optimized for high capacitance ratios
• Low series resistance characteristics suitable for high-Q resonators
• Moisture Sensitivity Level 1 rated for lead-free soldering

Applications

• Low tuning voltage Voltage Controlled Oscillators
• High-Q resonators in wireless system VCOs
• High-volume commercial RF systems

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and Green packaging status via official datasheets. Ensure ESD precautions are strictly followed during handling, as the device is classified as Class 1B Human Body Model. Validate storage conditions against moisture sensitivity requirements prior to solder assembly.

Selection Notes

Select this component when a specific capacitance value near 12.65 pF at 1 V is required for low-voltage tuning applications. Compare series resistance and capacitance ratios against other members of the SMV123x family to match circuit Q-factor requirements. Verify that the SOD-323 footprint aligns with existing PCB layouts and that the 1.5 nH parasitic inductance fits the target frequency range.

Part Context

This part belongs to the SMV123x series of silicon hyperabrupt junction varactors manufactured by Skyworks Solutions. The series includes multiple variants differentiated by capacitance ranges and package types such as SC-79, SOT-23, and SOD-882. The SMV1235 variant specifically targets mid-range capacitance needs within this lineup.

Replacement Considerations

Direct substitutes within the same series include SMV1235-001LF, SMV1235-004LF, and SMV1235-074LF, which share identical electrical specifications but differ in packaging and marking.