Microchip Technology GC15006-150E/TR

Overview

GC15006-150E/TR from Microsemi is a frequency-linear tuning varactor diode designed for high-linearity voltage-controlled oscillator (VCO) and filter tuning in Ku-band RF 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 coefficient, and typ. Q = 1200 at 4 V/50 MHz - enabling octave-spanning linear frequency sweep without external linearization circuitry.

For engineers reviewing the GC15006-150E/TR datasheet, GC15006-150E/TR pinout, GC15006-150E/TR application, or GC15006-150E/TR equivalent, key selection criteria include its S = 0.11 hyperabrupt junction profile, low surface noise for FM-noise-sensitive VCOs, RoHS-compliant gold-plated terminations, and suitability for surface-mount hybrid microwave assemblies requiring stable C–V linearity above 12 GHz.

Technical Context

This FLTVAR™ device uses computer-controlled grown junction epitaxy to achieve precise hyperabrupt doping profiles, yielding near-ideal voltage-to-capacitance linearity over −2 V to −20 V bias range. Its low leakage current (<50 nA @ 20 V) and superior passivation ensure reliability in high-frequency oscillators operating up to +125 °C ambient.

The GC15006-150E/TR is optimized for Ku-band (12–18 GHz) applications where constant modulation sensitivity and minimal phase noise are critical. Its 13:1 C_J0/C_J20 tuning ratio and 0.11 sensitivity support wideband linear tuning across one octave in properly matched resonant circuits.

Key Specifications

Pinout & Package

GC15006-150E/TR is supplied in non-hermetic surface-mount PACKAGE STYLE 450A-E, featuring gold-plated terminations and optimized for hybrid microwave circuit assembly. The device has two terminals: anode and cathode - polarity must be observed to maintain reverse-biased operation in tuning circuits.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar varactor diode applications.

Compared with BBY58-02W and MA46H120, GC15006-150E/TR offers the highest Q among S ≈ 0.11 varactors and uniquely combines 13:1 tuning ratio with Ku-band functionality - making it optimal for octave-spanning, low-noise VCO designs where both linearity and phase noise are co-constrained.

Availability

GC15006-150E/TR is available at Aetrix Electronics and suitable for Ku-band satellite downconverters, phase-locked oscillator tuning, and wideband microwave filter applications requiring stable component supply and traceable RoHS-compliant sourcing.

Supply support for GC15006-150E/TR 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, RF, and timing solutions for aerospace, defense, and industrial markets.

The GC15000 series was developed specifically for microwave frequency synthesis and filtering, emphasizing C–V linearity, low phase noise, and Ku-band operational integrity in mission-critical RF subsystems.

FAQ

What is the maximum reverse bias voltage rating for GC15006-150E/TR?

The absolute maximum reverse bias voltage for GC15006-150E/TR is not explicitly specified in the datasheet, but its electrical parameters are characterized up to −20 V, and leakage current remains ≤50 nA at 20 V. Operation beyond −20 V risks junction breakdown and permanent degradation. For reliable long-term use, Microsemi recommends limiting bias to −20 V or less in all GC15006-150E/TR applications.

Does GC15006-150E/TR require special handling due to ESD sensitivity?

Yes, GC15006-150E/TR is classified as ESD-sensitive per Microsemi's documentation. It must be handled using standard Class 1A ESD precautions - including grounded workstations, conductive packaging, wrist straps, and ionized air - especially during PCB placement and reflow. Failure to observe ESD controls may cause latent damage to the epitaxial junction, degrading C–V linearity or increasing leakage in GC15006-150E/TR units.

What does the "150E" suffix indicate in GC15006-150E/TR?

The "150E" suffix in GC15006-150E/TR denotes PACKAGE STYLE 450A-E - a non-hermetic, surface-mount package with gold-plated terminations and dimensions optimized for hybrid microwave circuit assembly. The "TR" indicates tape-and-reel packaging format. This differs from "00" (bare die) or "17" (hermetic stripline) variants in the GC15000 family.

Can GC15006-150E/TR be used in DC-coupled tuning circuits?

No - GC15006-150E/TR must operate under reverse bias only. Forward conduction will damage the epitaxial junction. All tuning circuits must ensure the cathode remains at higher DC potential than the anode, typically by grounding the anode and applying negative voltage to the cathode via a high-impedance bias network. AC coupling is not required, but DC blocking is mandatory if any forward voltage risk exists in GC15006-150E/TR system architecture.

How does the 0.11 sensitivity coefficient affect VCO design with GC15006-150E/TR?

The 0.11 sensitivity coefficient defines the hyperabrupt doping gradient in GC15006-150E/TR's junction, directly determining how linearly frequency shifts with control voltage. A value of 0.11 yields superior f–V linearity versus standard abrupt (S ≈ 0.5) or linear (S = 1.0) diodes - reducing harmonic distortion in modulation paths and easing loop filter design in PLLs using GC15006-150E/TR as the tuning element.