Solder paste is deposited using a solder stencil with an aperture having a concave edge in order to reduce {HEAD ~ the formation} of {TAIL ~ solder balls} 
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Solder paste is deposited using a solder stencil with an aperture having a concave edge in order to reduce { HEAD ~ the formation } of { TAIL ~ solder balls }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL