GC15007-79

Overview

The GC15007-79 is a silicon epitaxial mesa Frequency Linear Tuning Varactor (FLTVAR) designed for wideband linear tuning in VCO and filter applications. It features superior passivation for high reliability, low leakage current, and low surface noise. The device offers Q values well above ion-implanted hyperabrupt diodes and meets RoHS requirements per EU Directive 2002/95/EC. Standard terminal finish is gold unless otherwise specified. Electrical parameters are measured at 25°C with a reverse bias voltage of 22V at IR=10μA. At -4V, the capacitance is 1.0pF (+/-10%), and sensitivity is typically 0.11. The typical Q factor is 1000 at 50MHz.

Feature Summary

• Provides wideband linear tuning without external linearization
• Features very low phase noise and exceptional Q
• Utilizes computer-controlled grown junction epitaxy

Applications

• Voltage Controlled Oscillators (VCOs)
• Filters
• Modulators
• Amplifiers

Procurement Notes

Verify the specific package style required, as suffixes like -00, -17, or -450A denote different physical configurations such as chip, hermetic stripline, or non-hermetic SMT. Confirm that the standard gold finish aligns with assembly requirements. Consult the manufacturer directly for special packaging or material specifications not covered in standard documentation.

Selection Notes

Select this component when octave tuning over Ku band is required with minimal FM noise. The GC15007-79 provides a balance of capacitance and sensitivity suitable for modulated VCOs due to its constant sensitivity and high modulation rate capability. Ensure circuit design accounts for the parallel parasitic capacitance if using packaged versions for lower capacitance needs.

Part Context

This part belongs to the GC15000 series of frequency-linear tuning varactors manufactured by Microsemi (now Microchip Technology). The series includes models ranging from GC15001 to GC15013, offering various capacitance values and sensitivity coefficients to suit different RF tuning requirements across microwave frequencies.

Replacement Considerations

Direct substitutes within the same family include GC15006-xx and GC15008-xx, which share similar electrical characteristics but differ in capacitance and sensitivity. Verify package compatibility when swapping between suffixes.