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Product Detailed Parameters
- Description：DIODE VARACTOR 30V 20MA 0402
- Series：-
- Mfr：Skyworks Solutions Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Capacitance @ Vr, F：1.45pF @ 4V, 1MHz
- Capacitance Ratio：4.1
- Capacitance Ratio Condition：C0/C30
- Voltage - Peak Reverse (Max)：30 V
- Diode Type：Single
- Q @ Vr, F：3200 @ 4V, 50MHz
- Operating Temperature：-55°C ~ 125°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：0402 (1005 Metric)
- Supplier Device Package：402
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Overview
The SMV1405-040LF is a silicon abrupt junction tuning varactor diode from Skyworks Solutions, packaged in the SOD-882 Green™ format. It features a reverse voltage rating of 30 V and a forward current limit of 20 mA. The device exhibits a typical capacitance of 1.8 pF at 1 V reverse bias and maintains a series resistance of 0.8 Ω at 500 MHz. Designed for high-Q resonators in wireless system VCOs, it operates within a temperature range of -55 °C to +125 °C.
Feature Summary
- Abrupt junction design optimized for tight capacitance tolerances in Voltage Controlled Oscillators (VCOs).
- Low series resistance characteristics suitable for high-Q resonator applications above 10 GHz.
- Moisture Sensitivity Level 1 (MSL1) rated package compatible with lead-free soldering processes.
Applications
- High-Q resonators in wireless system Voltage Controlled Oscillators (VCOs)
- High-volume commercial systems requiring precise tuning
Procurement Notes
Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance and lead-free status via official documentation. Check for recent discontinuation notices as availability may be restricted. Ensure proper ESD handling protocols are followed during storage and assembly to prevent electrostatic discharge damage.
Selection Notes
Select this component when designing VCOs requiring low phase noise and high Q factors. Verify that the 30 V reverse voltage rating meets circuit requirements. Consider the SOD-882 package dimensions for PCB layout constraints. Evaluate thermal performance against the specified operating temperature limits.
Part Context
This part belongs to the SMV1405 to SMV1430 series of plastic-packaged abrupt junction tuning varactors. The series offers various capacitance values tailored for different RF tuning ranges while maintaining consistent package footprints and electrical characteristics across the family.
Replacement Considerations
SMV1405-079LF (SC-79 package), SMV1408-040LF (SOT-23 package). Verify package compatibility and pinout alignment before substitution.
FAQ
What is the maximum reverse voltage rating for the SMV1405-040LF?
The absolute maximum reverse voltage rating is 30 V.
Is the SMV1405-040LF RoHS compliant?
Yes, the 'LF' suffix indicates a lead-free, RoHS-compliant package.
What is the typical capacitance value at 1 V reverse bias?
The typical capacitance at 1 V reverse bias is 1.8 pF.
