SMV1220-079LF

Overview

The SMV1220-079LF is a silicon hyperabrupt junction tuning varactor diode designed for battery-operated wireless systems. It operates within a reverse voltage range of 0 V to 20 V, with a maximum forward current of 20 mA and power dissipation of 250 mW. The device provides a capacitance ratio of 4.0 (measured at C_T @ 1 V / C_T @ 4 V) and maintains a low series resistance of 0.65 Ω typical at 470 MHz and 4 V reverse bias. Capacitance values range from approximately 27.30 pF at 1 V to 7.55 pF at 4 V, measured at 1 MHz. It is housed in an ultra-small SC-79 package.

Feature Summary

• Cross-compatible with Renesas HVC365
• Low-series resistance for improved performance
• High-capacitance ratio suitable for wide tuning ranges
• Ultra-small SC-79 surface mount package

Applications

• VHF TV tuners
• Voltage-Controlled Oscillators (VCOs)
• Low-noise UHF and VHF VCOs for GSM, PCS, CDMA, and analog phones

Procurement Notes

Verify the component against the official Skyworks Solutions datasheet 203015D to confirm electrical parameters and physical dimensions. Ensure that the ordering suffix matches the required lead-free and RoHS compliance specifications. Confirm compatibility with standard tape and reel handling procedures before integration into production lines.

Selection Notes

Select this component when designing circuits requiring high capacitance ratios and low series resistance for frequencies up to and above 2.5 GHz. The device is specifically optimized for battery operation and low phase-noise applications. Verify that the operating temperature range of -55°C to +125°C aligns with the system's thermal requirements.

Part Context

This part belongs to the SMV1220 series of hyperabrupt junction tuning varactors manufactured by Skyworks Solutions Inc. The series is engineered for use in wireless communication systems where compact size and high performance are critical. The specific model utilizes the SC-79 package format.

Replacement Considerations

The datasheet explicitly states cross-compatibility with the Renesas HVC365. Verify pinout alignment and electrical parameter tolerances before substituting other varactor diodes in existing designs.

FAQ

What is the specified capacitance ratio condition?

The capacitance ratio is defined as the capacitance at 1 V reverse bias divided by the capacitance at 4 V reverse bias.

What is the maximum reverse voltage rating?

The absolute maximum reverse voltage rating is 20 V.

Is the device suitable for lead-free soldering?

Yes, the device is rated for Moisture Sensitivity Level 1 (MSL1) at 260 °C per JEDEC J-STD-020 and can be used for lead or lead-free soldering.