Microchip Technology GC15006-152

Overview

GC15006-152 from Microsemi is a frequency-linear tuning varactor diode designed for high-linearity voltage-controlled oscillator (VCO) and filter applications in Ku-band systems. It delivers 0.7 pF capacitance at –4 V, 0.14 pF at –20 V, 13:1 tuning ratio (C_J0/C_J20), 0.11 sensitivity, and typical Q of 1200 at 4 V / 50 MHz.

For engineers reviewing the GC15006-152 datasheet, GC15006-152 pinout, GC15006-152 application, or GC15006-152 equivalent, key selection criteria include its octave-capable linear C–V response, low FM noise performance in modulated VCOs, and suitability for surface-mount hybrid RF designs requiring stable high-Q tuning over –55°C to +125°C.

Technical Context

This FLTVAR™ device uses computer-controlled grown junction epitaxy to achieve precise doping profiles enabling near-ideal hyperabrupt capacitance–voltage linearity. Its 0.11 sensitivity and 13:1 C_J0/C_J20 ratio support wideband linear frequency tuning without external linearization circuitry.

The diode operates with ≤50 nA leakage at 20 V reverse bias and maintains functional performance through Ku-band (12–18 GHz), validated by typical frequency response curves showing monotonic tuning from 3 to 21 GHz under 3–21 V bias.

Key Specifications

Pinout & Package

GC15006-152 is supplied in Package Style 152 - a hermetic stripline surface-mount package optimized for microwave hybrid assemblies. This package features low parasitic inductance and controlled impedance interface for direct integration into microstrip or coplanar waveguide layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar frequency-linear tuning varactor applications.

Compared with GC15006-17 and GC15006-450A, GC15006-152 offers identical tuning performance but differs in mechanical interface: Style 152 provides enhanced thermal dissipation and RF shielding via integrated metal lid, making it preferred for high-reliability military/aerospace VCOs where long-term parameter drift must be minimized.

Availability

GC15006-152 is available at Aetrix Electronics and suitable for phased array radar transceivers, SATCOM uplink modulators, and Ku-band point-to-point radios requiring stable component supply across extended temperature ranges and high-reliability RF performance.

Supply support for GC15006-152 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microsemi (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and RF components for aerospace, defense, and industrial markets.

The GC15000 series was developed to address the need for precision, linear-tuning varactors in Ku-band VCOs and filters-replacing legacy ion-implanted devices with epitaxial FLTVAR™ technology for superior Q and phase noise.

FAQ

What is the maximum reverse bias voltage rating for GC15006-152?

The absolute maximum reverse bias voltage for GC15006-152 is not explicitly specified in the datasheet, but its C–V characterization is defined up to –20 V, and leakage current remains ≤50 nA at 20 V. Operation beyond –20 V is not characterized and may risk junction breakdown or accelerated aging. For reliable long-term use, GC15006-152 should be biased within 0 to –20 V per published electrical parameters.

Does GC15006-152 require external linearization circuitry in VCO designs?

No, GC15006-152 does not require external linearization. Its FLTVAR™ epitaxial structure delivers intrinsic frequency-linear tuning behavior, verified by 0.11 sensitivity and 13:1 C_J0/C_J20 ratio. In properly designed tank circuits, GC15006-152 enables octave-spanning linear frequency sweeps without calibration tables, op-amp compensators, or DAC-based correction algorithms.

What is the thermal resistance (R_θJA) of GC15006-152 in Package Style 152?

The datasheet does not specify R_θJA for GC15006-152. However, Package Style 152 is a hermetic stripline design with direct metal-lid thermal path to the PCB ground plane. Typical thermal resistance for comparable Microsemi stripline varactors in this class is ~120°C/W under standard JEDEC conditions. For thermal modeling, GC15006-152 should be treated as a low-power (<1 mW dissipation) device where self-heating is negligible in most RF bias configurations.

Is GC15006-152 RoHS compliant and lead-free?

Yes, GC15006-152 meets RoHS Directive 2002/95/EC requirements. The standard terminal finish is gold, and all materials-including die attach, package body, and plating-are certified RoHS-compliant. No lead or restricted substances are used in the manufacturing process, and GC15006-152 is suitable for lead-free reflow soldering per J-STD-020.

How does GC15006-152 differ from GC15006-00 in terms of application suitability?

GC15006-152 uses a hermetic stripline surface-mount package optimized for microwave hybrid circuits, while GC15006-00 is an unpackaged chip intended for die bonding onto custom carriers. GC15006-152 provides controlled impedance, repeatable parasitics, and environmental protection-making it suitable for production RF modules. GC15006-00 requires wire bonding and custom packaging, limiting use to prototyping or specialized thin-film assemblies. Both share identical electrical specs.