High-Temperature Dielectric Coatings for Extreme Electronics
Power electronics in downhole, aerospace, and defense applications require capacitors and dielectric systems that perform reliably from -55°C to +350°C.
Electronics Coating Challenges
Dielectric Breakdown
Standard capacitor dielectrics lose integrity above 150°C, limiting use in high-temperature electronics. Downhole and aerospace applications routinely exceed this threshold.
Multilayer Integrity
Thermal cycling causes delamination at ceramic-metal interfaces in conventional MLCC designs. CTE mismatch between layers drives progressive interface failure.
Metallization Oxidation
Electrode materials oxidize at high temperature, degrading contact resistance and device reliability. Standard base metal electrodes are unsuitable above 200°C.
Miniaturization Demands
Packaging constraints require ultra-thin dielectric layers with consistent properties. Conventional thick-film processes cannot achieve the required dimensional control.
DRS Dielectric Technologies
High-Temperature MLCC Coatings
Replacement for conventional ceramic capacitors in extreme environment power electronics. Thermally sprayed dielectric layers maintain stable capacitance across the full operating range — enabling reliable power conversion in downhole, aerospace, and defense applications.
- Downhole power electronics
- Aerospace avionics
- Defense systems
Thermal Spray Dielectric Layers
Insulation layers, hermetic interfaces, and sensor packaging in downhole and aerospace environments. Applied via controlled plasma spray process with precise thickness and composition control for consistent electrical performance.
- Hermetic packaging
- Sensor insulation
- Interface layers
4-Step Development Process
Specification Review
Electrical, thermal, and mechanical requirements capture. Define dielectric constant, loss factor, breakdown voltage, and temperature range targets.
Material Selection
Dielectric composition chosen for temperature range and loss factor targets. Screen candidate materials using high-temperature impedance spectroscopy.
Deposition Development
Spray process optimized for dielectric integrity and interface adhesion. Control particle temperature and velocity for dense, low-defect microstructure.
Device-Level Testing
Electrical characterization across full temperature range. Capacitance, dissipation factor, and breakdown voltage measured at temperature extremes.
Discuss Your Electronics Program
Our team has direct experience developing high-temperature dielectric systems for downhole, aerospace, and defense power electronics applications.