GC1509-30

Overview

The GC1509-30 is a silicon abrupt junction tuning varactor diode from the GC1500 series, manufactured by Microchip Technology. It features a minimum breakdown voltage of 30 V at 10 uA and operates within a temperature range of -55°C to +125°C. The device provides a nominal capacitance of 4.7 pF with a standard tolerance of ±10%. Key electrical characteristics include a minimum quality factor of 2600 at -4V and 50 MHz, and a minimum capacitance ratio of 3.9 between -4V and 30V bias points.

Feature Summary

• High Q factor and low series resistance for efficient signal tuning
• Abrupt junction design optimized for low phase noise applications
• RoHS compliant construction with gold-plated terminations

Applications

• VHF to Ku Band Tuning
• Voltage Variable Filters (VVF)
• Phase Shifters
• Low Phase Noise Voltage Controlled Oscillators

Procurement Notes

Verify the specific package style suffix when ordering, as the base model number requires a case designation such as Style 30. Confirm that the required capacitance tolerance and terminal finish meet project specifications. Consult the manufacturer directly for custom mechanical configurations or alternative terminal finishes not listed in standard catalogs.

Selection Notes

Select this component based on the required operating frequency band and necessary capacitance ratio. Ensure the circuit design accommodates the specified thermal coefficient of capacitance and leakage current limits at maximum operating temperatures. Verify that the available Q factor meets the insertion loss requirements of the target application.

Part Context

This part belongs to the GC1500 series of 30 Volt Abrupt Junction Tuning Varactors. The series offers a wide selection of capacitance values ranging from 0.4 pF to 10.0 pF. All specifications are based on the Style 30 package unless otherwise noted, including the inherent case capacitance contribution.

Replacement Considerations

Direct substitutes within the same series include GC1508-30 and GC1510-30, which offer slightly different nominal capacitance values while maintaining similar electrical performance profiles.