Aluminum PCB, also known as metal core PCB (MCPCB), is a thermally conductive printed circuit board built on an aluminum alloy base instead of traditional non-conductive FR-4 glass fiber substrate. This specific Aluminum PCB features a high-reflectivity white solder mask and selective gold-plated contact pads, combining excellent heat dissipation with reliable electrical contact performance.
Specifications
– PCB Type: Aluminum base PCB (MCPCB), white solder mask, gold-plated contact pads
– Base Core: Aluminum 5052 / 1060 (optional)
– Dielectric Layer: Thermally conductive insulation layer, 75μm ~ 150μm
– Copper Foil: 1oz ~ 4oz, electrolytic copper
– Solder Mask: White LPI solder mask, UL94 V-0, high hiding power
– Surface Finish: Hard gold plating on contact pads; rest area optional OSP / immersion silver
– Thermal Conductivity: 1.0 ~ 3.0 W/m·K (customizable)
– Board Thickness: 1.0mm ~ 3.0mm
– Minimum Trace / Space: 0.15mm / 0.20mm
– Pad Gold Thickness: 0.05μm ~ 1.0μm (selective gold plating only on contact pads)
– Max Panel Size: 400 × 1200mm
– Certification: RoHS, REACH, UL
Performance Characteristics
– Excellent heat dissipation, rapidly transfer heat from power components to aluminum substrate
– Low thermal resistance, suppress junction temperature rise for high-power devices
– Good mechanical rigidity and vibration resistance
– Stable electrical insulation between copper circuit and aluminum base
– Gold-plated contact pads deliver ultra-low contact resistance and stable conductivity
– Anti-oxidation on contact areas, reliable for repeated plug-and-contact applications
– Good thermal cycling performance, less thermal deformation under long-time power-on
White Solder Mask Features
– High whiteness and high reflectivity, great luminous reflectance for LED lighting
– Anti-yellowing formula option, keeps bright white appearance under long-term light & heat exposure
– Smooth white surface, uniform coverage, no pinholes or orange peel
– High contrast for easy visual AOI inspection of circuits and pads
– Non-conductive, flame retardant UL94 V-0
– Good adhesion to copper and aluminum insulation layer
Manufacturing & Process Advantages
– Selective gold plating only on contact pads, balancing reliable contact and cost control
– White solder mask is applied and exposed precisely, aligned with gold pad layout
– Controlled dielectric thickness for consistent thermal performance batch by batch
– Available for single-sided circuits, suitable for power and LED modules
– Strict insulation resistance testing to avoid leakage risk
– Custom gold pad shape, size and gold thickness according to connector mating requirement
Typical Applications
– High-power LED lighting modules, LED panel lights, spotlights
– Power driver boards, switching power supply, automotive LED lights
– Thermal management required contact modules with pluggable terminals
– Industrial high-power control boards requiring visible circuit inspection
– Smart home lighting, signage and backlight modules
