What is a thick film circuit?
Definition, structure, thick film PCB terminology, and when ceramic thick film circuits are used instead of FR4 PCB assemblies.
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Thick Film Circuit Knowledge Center
Engineering guides for thick film circuits, ceramic PCB substrates, screen printing, firing, laser trimming, materials, reliability, and custom design rules.
Thick film circuit engineering guides
This knowledge center helps engineers and sourcing teams evaluate custom thick film PCB, ceramic circuit, thick film resistor, sensor, heater, and hybrid microcircuit projects before sending drawings for RFQ.
Thick film PCB vs ceramic PCB vs thin film circuit
A practical comparison of materials, process, precision, thermal behavior, reliability, and cost drivers.
Thick film circuit manufacturing process
Substrate preparation, screen printing, drying, firing, multilayer printing, laser trimming, assembly, and test.
Thick film circuit materials guide
Alumina, AlN, conductor paste, resistor paste, dielectric paste, glass frit, adhesion, and paste compatibility.
Thick film resistor design guide
Sheet resistance, geometry, TCR, tolerance, trimming allowance, power density, and long-term stability.
Laser trimming of thick film resistors
Passive and active trimming, cut geometry, heat affected zones, post-trim drift, and precision control.
Thick film circuit reliability guide
Silver migration, resistor drift, adhesion, dielectric breakdown, humidity, thermal cycling, and screening.
Ceramic substrate selection
How to choose alumina, aluminum nitride, stainless steel, aluminum, or flexible PI substrates for thick film designs.
Custom thick film circuit design rules
RFQ drawing checklist, conductor spacing, resistor geometry, terminals, high voltage clearance, and thermal paths.
How to use these guides
For a new custom project, start with the process and materials guides, then review resistor design, substrate selection, reliability, and RFQ design rules. For application-specific projects, connect these guides with the product pages for ceramic thick film circuits, fuel gauge circuits, throttle sensor resistors, and thick film heating elements.