Electronics Forum: 28098 (Page 1 of 1)

qfp reflow problems

Electronics Forum | Thu Apr 15 16:07:37 EDT 2004 | barry

Hi there all, we are having problems with 2 qfp devices. grainy poorly reflowed solder joints. One 100 pin .5mm pitch, and one 64 pin .5 mm pitch . Both of these devices have a thermo pad on the back of them (pad area soldered to back of device)which

Wave Solder DPMO Target

Electronics Forum | Tue Apr 10 09:28:54 EDT 2012 | davef

Here's information from Bob's ppm site ... Screen Printing Component Placement Reflow Soldering Wave Soldering May ‘02 730 15020 448 18251 June ‘02 569 7103 678 3366 July ‘02 3977 2998 1227 3736 August ‘02 1430 1229 108 4314 Sep

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