Electronics Forum | Fri Aug 17 12:07:40 EDT 2001 | davef
We always get pissed-off a preform suppliers when they tell us that we need to do NRE to develop a preform. Is that BS er watt? Ya got this vanilla connector that everyone on the planet uses and we have to pay NRE. It's just a scam. Try Teka Inte
Electronics Forum | Thu Jul 05 08:11:45 EDT 2007 | naynayno
This is wave soldering process and design question since most folks associated with SMT are processing mixed assemblies. We have a 3-leaded sensor (radial) with such a tight pitch always bridges. Solutions unders disussion are pre-forming and addin
Electronics Forum | Fri Apr 15 13:46:50 EDT 2005 | steve
They can be expensive and if your using water soluble chemistry you will have to immerse the pre-form into flux. Asking the vendor to provide flux with the pre-form I believe it would dry out prior to use.
Electronics Forum | Thu Jan 11 00:52:12 EST 2007 | behrsam
Mario, I tried a couple of profiles. In all cases the preheat ramps fairly slow, while the reflow utilizes the radiative heater to speed to reflow as quick as possible. I tried a quick profile and a slower one. The quick has about 15-20 sec at pre
Electronics Forum | Fri Mar 06 15:04:11 EST 1998 | Todd N
| We have a double sided pcb that is surface mount on both sides. Now a Through Hole connector has been added. Appart from hand soldering does anyone have info. on reflow soldering the part. The connector is 0.1mm pitch, square legs. | 1) Do you need
Electronics Forum | Fri Mar 06 23:02:43 EST 1998 | Scott McKee
| | We have a double sided pcb that is surface mount on both sides. Now a Through Hole connector has been added. Appart from hand soldering does anyone have info. on reflow soldering the part. The connector is 0.1mm pitch, square legs. | | 1) Do you
Electronics Forum | Fri Mar 06 23:13:13 EST 1998 | Scott Cook
| We have a double sided pcb that is surface mount on both sides. Now a Through Hole connector has been added. Appart from hand soldering does anyone have info. on reflow soldering the part. The connector is 0.1mm pitch, square legs. | 1) Do you need
Electronics Forum | Mon Mar 09 16:36:38 EST 1998 | Jim McLenaghan
| We have a double sided pcb that is surface mount on both sides. Now a Through Hole connector has been added. Appart from hand soldering does anyone have info. on reflow soldering the part. The connector is 0.1mm pitch, square legs. | 1) Do you need
Electronics Forum | Tue May 28 13:14:31 EDT 2002 | zanolli
Hello Mark, I'll assume that you are currently wave soldering and would like to eliminate that operation by using pre-forms or press-fit connectors. Solder preforms or solder flux bearing connector leads usually do not require any hole size changes,
Electronics Forum | Thu Aug 03 12:18:54 EDT 2006 | russ
pre forms at least in my experience have been very cumbersome and expensive. in both piece part price and labor to install. If possible have the preforms installed on your widget prior to buying Russ
