SMV1231-074LF

Overview

The SMV1231-074LF is a silicon hyperabrupt junction tuning varactor diode from the SMV123x series, manufactured by Skyworks Solutions. It is housed in an SC-79 package with a series inductance of 0.7 nH and marked as KA3. The device operates within a temperature range of -55°C to +125°C. Key electrical specifications include a maximum reverse voltage of 15 V and a forward current rating of 20 mA. At 1 V reverse bias, the capacitance ranges from 1.43 pF to 1.72 pF, while at 6 V it ranges from 1.5 pF to 2.8 pF. The typical series resistance at 3 V and 500 MHz is 2.90 Ω.

Feature Summary

• Designed for low tuning voltage Voltage Controlled Oscillators (VCOs) utilizing hyperabrupt junction technology.
• Low series resistance characteristics suitable for high-Q resonators in wireless systems operating over 10 GHz.
• Rated for Moisture Sensitivity Level 1 (MSL1) at 260 °C per JEDEC J-STD-020 standards.

Applications

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

Procurement Notes

Verify component authenticity through official Skyworks channels or authorized distributors. Confirm the specific ordering suffix matches the required package type and marking code. Ensure handling procedures adhere to ESD protection guidelines during storage and assembly to prevent damage.

Selection Notes

Select this component based on the required capacitance ratio and series resistance values for the target frequency band. Verify that the SC-79 package dimensions align with the PCB layout constraints. Consider the thermal management requirements given the specified operating temperature range.

Part Context

This part belongs to the SMV123x family of hyperabrupt junction tuning varactors. The SMV1231 variant specifically provides lower capacitance values compared to higher-numbered models like the SMV1237. The -074LF suffix indicates the SC-79 package configuration.

Replacement Considerations

SMV1231-079LF: Identical electrical performance but utilizes the SC-70 package instead of SC-79.

FAQ

What is the marking code for the SMV1231-074LF?

The marking code for the SMV1231-074LF is KA3.

What is the typical series resistance at 500 MHz?

The typical series resistance at 3 V and 500 MHz is 2.90 Ω.