SMV1213-001LF

Overview

The SMV1213-001LF is a silicon hyperabrupt junction tuning varactor diode designed for low tuning voltage Voltage Controlled Oscillators (VCOs). It is housed in an SOT-23 package with a series inductance of 1.5 nH. The device operates within a reverse voltage range up to 12 V and supports temperatures from -55 °C to +125 °C. At 25 °C, the typical capacitance is 22.0 pF at 1 V, 9.2 pF at 2.5 V, and 4.5 pF at 4 V. The C1V/C4V ratio is typically 5, while the series resistance at 4 V and 500 MHz is 1.4 Ω.

Feature Summary

• Hyperabrupt junction design optimized for low tuning voltage VCO applications
• High capacitance ratio providing effective frequency tuning capability
• Moisture Sensitivity Level 1 rated for standard lead-free soldering processes

Applications

• Low tuning voltage Voltage Controlled Oscillators (VCOs)
• High-volume commercial RF systems

Procurement Notes

Verify component authenticity by checking the marking code D86 on the SOT-23 package against official Skyworks documentation. Confirm RoHS compliance through the Green™ designation or LF suffix. Ensure handling procedures account for ESD sensitivity, as the device requires protection during transport and assembly to prevent damage from static discharge.

Selection Notes

Select this component when a high capacitance value around 22 pF at 1 V is required for VCO designs. The SOT-23 package provides a compact footprint suitable for space-constrained layouts. Verify that the operating environment remains within the specified temperature range of -55 °C to +125 °C to maintain electrical performance stability.

Part Context

This part belongs to the SMV121x series of silicon hyperabrupt junction varactors. The series includes variants like the SMV1215-001LF, which offers lower capacitance values. All members share similar absolute maximum ratings and are characterized for capacitance and resistance over temperature to ensure consistent performance across different operating conditions.

Replacement Considerations

The SMV1213-079LF serves as a direct alternative using the SC-79 package. Designers must account for the difference in series inductance, which is 0.7 nH for the SC-79 variant compared to 1.5 nH in the SOT-23 package.