SMV1253-004LF

Overview

The SMV1253-004LF is a silicon hyperabrupt junction tuning varactor diode from the Skyworks SMV1247-SMV1255 series, housed in a Green™ SC-79 package. It features a typical capacitance of 53 pF at 0.3 V reverse bias and 4.8 pF at 4.7 V, yielding a capacitance ratio of 12. The device operates with a maximum reverse voltage of 15 V and a forward current rating of 20 mA. Series resistance is typically 1.1 Ω at 500 MHz, with a quality factor of 350 at 50 MHz and 3 V. Operating temperature ranges from -55 °C to +125 °C.

Feature Summary

• Hyperabrupt junction design optimized for low tuning voltage Voltage Controlled Oscillator (VCO) applications
• High capacitance ratio of 12 typical between 0.3 V and 4.7 V reverse bias
• RoHS compliant Green™ packaging rated for Moisture Sensitivity Level 1 at 260 °C

Applications

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

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via the official Certificate of Conformance. Ensure handling follows standard ESD precautions due to sensitivity to electrostatic discharge. Check for updated discontinuation notices as product lifecycles may change without prior notice.

Selection Notes

Select this component when a high capacitance ratio is required for wide tuning range applications. The SC-79 package suits space-constrained designs requiring low parasitic inductance. Verify that the 15 V reverse voltage rating aligns with the circuit's maximum operating conditions. Consider the 53 pF nominal capacitance for matching specific frequency requirements.

Part Context

This part belongs to the SMV1247-SMV1255 family of silicon hyperabrupt varactors designed for commercial RF applications. The suffix '004' identifies the specific SC-79 package variant within the series. Other members include SOD-323 and SOT-23 packages with varying capacitance values. The series shares common electrical characteristics but differs in physical footprint and specific capacitance ratings.

Replacement Considerations

SMV1253-079LF: Identical electrical specifications in a non-Green™ SC-79 package. SMV1253-040LF: Same electrical performance in an SOD-882 package. Cross-package replacements require PCB layout adjustments.