SMV1263-040LF

Overview

The SMV1263-040LF is a silicon hyperabrupt junction tuning varactor diode designed for 3 V platforms. It operates within a reverse voltage range of 0 to 20 V and supports forward currents up to 20 mA. The device exhibits a typical capacitance of 8.87 pF at 0 V reverse bias, decreasing to 1.20 pF at 5 V. At 1 MHz with 0.5 V reverse voltage, the minimum capacitance is 6.2 pF, while at 2.5 V it is 2.3 pF. The series resistance is typically 1.2 Ω at 900 MHz under 1 V reverse bias. It features a maximum breakdown voltage of 20 V and operates between -55 °C and +125 °C.

Feature Summary

• High capacitance ratio achieved at low reverse voltages
• Hyperabrupt junction design optimized for low phase noise VCOs
• Packages rated MSL1, 260 °C per JEDEC J-STD-020

Applications

• Low-noise and wideband UHF and VHF VCOs
• High-volume, low-cost battery-powered tuning circuits
• Wireless systems operating up to and over 2.5 GHz

Procurement Notes

Verify component authenticity by checking the marking code EN1 on the SOD-882 package against official Skyworks documentation. Confirm RoHS compliance through the lead-free designation in the part number. Ensure handling procedures strictly follow ESD precautions due to the sensitivity of the semiconductor junction. Validate that the procurement source provides traceable datasheets matching document number 200062M.

Selection Notes

Select this component when designing 3 V platform circuits requiring high capacitance ratios at low reverse voltages. The hyperabrupt junction profile makes it suitable for applications demanding low phase noise performance in wireless systems. Verify that the required operating frequency falls within the effective tuning range supported by the specified capacitance values and series resistance characteristics.

Part Context

The SMV1263-040LF belongs to the SMV1263 series of silicon hyperabrupt junction tuning varactors manufactured by Skyworks Solutions, Inc. This series is specifically engineered for 3 V battery-operated applications. The -040LF suffix indicates the SOD-882 package configuration with an associated series inductance of 0.45 nH.

Replacement Considerations

Consult the official Skyworks documentation for cross-reference data. No specific substitute part numbers are confirmed in the provided datasheet.