| Single-Sided Rigid PCB | One copper layer on one side of an insulating substrate | FR-4, paper phenolic, or composite epoxy materials | Simple controls, LED lighting, basic consumer devices, power modules | Low cost, simple manufacturing, easy inspection | Limited routing density and component placement; unsuitable for complex high-speed designs | Low |
| Double-Sided Rigid PCB | Copper layers on both sides connected by plated through-holes | FR-4 with standard epoxy-glass reinforcement | Industrial controls, instrumentation, automotive modules, consumer electronics | More routing area and functionality than single-sided boards | Requires through-hole drilling and registration control; moderate signal-density limits | Low–Medium |
| Multilayer Rigid PCB | Three or more copper layers separated by dielectric prepreg and core materials | FR-4, high-Tg FR-4, low-loss laminates, copper foil | Computing, networking, industrial equipment, medical electronics, automotive systems | High circuit density, controlled power distribution, improved electromagnetic performance | Layer count, impedance control, via design, thermal management, and fabrication yield affect cost | Medium–High |
| HDI PCB | Sequential buildup layers using microvias, blind vias, buried vias, and fine lines | High-Tg FR-4, low-loss resin systems, buildup dielectric films | Smart devices, compact computing, aerospace electronics, advanced medical equipment | Very high wiring density, smaller footprints, shorter electrical paths | Higher process complexity, microvia reliability, fine-line capability, and inspection requirements | High |
| Flexible PCB | One or more copper layers on a bendable polyimide dielectric | Polyimide film, rolled-annealed or electrodeposited copper, flexible coverlay | Wearables, cameras, displays, medical probes, compact interconnects | Low weight, space saving, vibration resistance, and dynamic or static bending capability | Bend radius, copper fatigue, stiffener placement, crease protection, and assembly handling | Medium–High |
| Rigid-Flex PCB | Rigid multilayer sections joined with flexible polyimide sections in one assembly | FR-4 rigid cores combined with polyimide flex layers and coverlays | Aerospace systems, automotive electronics, surgical instruments, high-reliability equipment | Reduces connectors and cables while supporting three-dimensional packaging | Bend-zone geometry, transition design, material compatibility, and assembly yield are critical | High |
| Metal-Core PCB | Copper circuit layer over dielectric insulation and an aluminum or copper heat-spreading core | Aluminum or copper core, thermally conductive dielectric, copper foil | LED lighting, power converters, motor drives, automotive lighting | Improved heat dissipation and dimensional stability for thermally demanding designs | Thermal conductivity, electrical isolation, coefficient of thermal expansion, and mechanical processing | Medium |
| RF / Microwave PCB | Usually two or more layers with controlled-impedance transmission lines and dedicated reference planes | Low-loss PTFE-based, ceramic-filled, or hydrocarbon-ceramic laminates; copper foil | Antennas, radar, satellite communications, wireless infrastructure, test equipment | Low dielectric loss, predictable high-frequency performance, and controlled signal propagation | Dielectric constant tolerance, dissipation factor, surface roughness, stackup accuracy, and connector transitions | High |
| Ceramic PCB | Single or multilayer ceramic substrate with thick-film or thin-film conductive layers | Alumina, aluminum nitride, or other engineered ceramic substrates | High-power modules, RF packages, sensors, aerospace and harsh-environment electronics | Excellent thermal stability, low moisture absorption, and high-temperature capability | Brittleness, machining limits, substrate availability, metallization method, and higher manufacturing cost | High |