Tom, We have been using "paste in hole" for soldering connector to the "back" side of daughter boards. It took some time for us to develop the process which included selecting the right solder paste, stencil configuration, lead to hole ratios, and reflow profiles that would give us acceptable results. We are using assembly/soldering pallets with cavities that hold the connectors in position allowing us to pre-load the connectors in the pallets and place the pasted PWB onto the connector pins. The pallets hold multiple boards and they are used in the pick and place machine as well as reflow. We are also using "paste in hole" for soldering DIP relays and we're obtaining excellent results. I caution you to look closely at the ability of your components to withstand the reflow temperatures, as we had to change our connectors to a higher temperature rated material. There is a excellent article in the January issue of the SMT Journal that was written by Bill Barthel. I recommend that you get a copy as it does cover the subject well. We are in the process of expanding this methodology to other PIH components, and we're obtaining very encouraging results. DAN BOTTS HUGHES TRAINING LINK DIVISION [log in to unmask] 607-721-4565 ______________________________ Reply Separator _________________________________ Subject: Paste in hole Author: [log in to unmask] at CCGATE Date: 8/16/95 1:27 PM Hi, We are interested in assembly alternatives for components requiring wave soldering. The option of "paste in hole" was suggested. Does anyone have any experience in using "paste in hole" instead of conventional wave soldering for assembly of through hole components such as PGAs or connectors? Any related information, e.g. published papers, reference, or standards for this manufacturing technique will help. Thanks in advance. Tom Chung The following is an attached File item from cc:Mail. It contains information that had to be encoded to ensure successful transmission through various mail systems. To decode the file use the UUDECODE program. --------------------------------- Cut Here --------------------------------- begin 644 rfc822.txt M1G)O;2!I<&,A:7!C:'$N8V]M(51E8VA.970M<F5Q=65S=$!W=V$N8V]M#0I8 M+45N=F5L;W!E+49R;VTZ(&EP8R%I<&-H<2YC;VTA5&5C:$YE="UR97%U97-T M0'=W82YC;VT-"E)E8V5I=F5D.B!F<F]M(&UI<V\N=W=A+F-O;2`H,3DX+C0Y M+C$W-"XS,RD-"B!B>2!%1$5.,2Y(04,N0T]-("A0341&(%8T+C,M,3,@(S4X M.#0I(&ED(#PP,4A5-34P6E`X2%,P,#A8-T=`141%3C$N2$%#+D-/33X[#0H@ M5V5D+"`Q-B!!=6<@,3DY-2`Q,SHR-3HP.2`M,#@P,"`H4%-4*0T*4F5C96EV M960Z(&9R;VT@:7!C(&)Y(&UI<V\N=W=A+F-O;2!W:71H('5U8W`@*%-M86EL M,RXQ+C(X+C$@(S@I#0H@:60@;3!S:6\U5"TP,#!&8F%#.R!7960L(#$V($%U M9R`Y-2`Q-#HR-2!#1%0-"E)E8V5I=F5D.B!B>2!I<&-H<2YC;VT@*%-M86EL M,RXQ+C(X+C$@(S(I(&ED(&TP<VEN660M,#`P,$A(0SL@5V5D+`T*(#$V($%U M9R`Y-2`Q,SHU,2!#1%0-"D1A=&4Z(%=E9"P@,38@075G(#$Y.34@,3,Z,C0Z M,#<@+3`V,#`-"E)E<V5N="UF<F]M.B!496-H3F5T0&EP8VAQ+F-O;0T*1G)O M;3H@8VAU;F=`='5R=&QE+FUC8RYC;VT@*%1O;2!#:'5N9RD-"E-U8FIE8W0Z M(%!A<W1E(&EN(&AO;&4-"E)E<V5N="US96YD97(Z(%1E8VA.970M<F5Q=65S M=$!I<&-H<2YC;VT-"E@M4V5N9&5R.B!C:'5N9T!N:6]B:75M+FUC8RYC;VT- M"E1O.B!496-H3F5T0&EP8VAQ+F-O;0T*4F5S96YT+6UE<W-A9V4M:60Z(#PB M-UAF=S(N,"Y7=44N6'5:0VTB0&EP8SX-"DUE<W-A9V4M:60Z(#QV,#(Q,3`Q M,#!A8S4W9C,U9#`W.&1`6S$R."XV,BXT-2XQ,#5=/@T*34E-12UV97)S:6]N M.B`Q+C`-"D-O;G1E;G0M='EP93H@=&5X="]P;&%I;CL@8VAA<G-E=#TB=7,M M87-C:6DB#0I#;VYT96YT+71R86YS9F5R+65N8V]D:6YG.B`W0DE4#0I/;&0M M4F5T=7)N+5!A=&@Z(#QM:7-O(71U<G1L92YM8V,N8V]M(6-H=6YG/@T*6"U- M86EL:6YG+4QI<W0Z(#Q496-H3F5T0&EP8VAQ+F-O;3X@87)C:&EV92]L871E M<W0O.#@X#0I8+4QO;W`Z(%1E8VA.971`:7!C:'$N8V]M#0I0<F5C961E;F-E (.B!L:7-T#0H` end