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Doesn't sound well considered. The board will be soldered in reflow oven or an a hot plate, uniformly heating the whole board. Hand soldering or repair of thermal clad boards is hardly possible without preheating the board on a hot plate.I must admit i always like to have large thermal copper lands connected to SMD pads, but with our tiny LEDs, i fear doing it without thermal reliefing as the LEDs might not solder properly, if the exterior copper land draws heat out of the actual footprint area of the pad during soldering...therefore i thermal reliefed the connection of thermal copper lands to the LEDs as follows.....(attached)....maybe i could have gotten away without this?...
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