Single Layer Sink Pad PCB with high thermal conductivity and thermal expansibility used on automative lighting provided by Best Technology.
Heat Sink, Sink Pad, Direct Thermal Path.
The 1 Layer SinkPAD board consists of a copper circuit layer, a dielectric (non-conducting) layer, a metal core/pedestal which normally is copper. Which is the most popular stack up for SinkPAD Board, and of course most cheap, fastest lead time option.
As the trace layer is only on the top side if SinkPAD board, so it’s also belonging to single sided SinkPAD PCB, and also belonging to Direct Thermal Path (DTP) board, so most of them were used in thermoelectric separation application.
The SinkPad board provides excellent heat transfer from the LED to the base metal (copper) plate, while maintaining excellent electrical isolation. The base copper base gives the single-sided substrate mechanical integrity, distributes and transfers the heat to a heat sink, mounting surface or directly to the ambient air.
The 1 Layer copper base SinkPad PCB can be used with surface mount and chip & wire components, and provides much lower thermal resistance than normal MCPCB. As the thermal PAD of LED is touching the convexity of copper core/pedestal directly, so that thermal conductivity can be 400W/m.K.
It is generally used for high power LED, the pad of LED touch the copper base directly, so that the heat generated by LED will be dissipated quickly into the air, or heatsink, which can achieve the best heat dissipation and conduction.
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