Electronics Forum | Wed Oct 23 12:06:09 EDT 2002 | russ
It sounds like you already know the answer! How much does it cost you to solder P.T.H. by hand (number of pins/per hour, / cost of assembler) vs. wave preparation and time of loading/masking etc... Cost of rework from each process? Only you can mak
Electronics Forum | Thu Oct 24 01:10:54 EDT 2002 | pizz
thank ur kind help. the above two processes,which is more reliably,other words,robust? I am in a dilemma. some suggest that 50 pins is the critical point,once exceed the quantity,the hand soldering is not practical. I prefer to two sides reflow.but
Electronics Forum | Thu Oct 17 16:09:18 EDT 2002 | Hamish
Has anyone had trouble with SMD machine placing of SC-79 (approx 0402) varicaps (infineon, alpha, philips)? Using the recommended pads from Infineon I am struggling to get the component to place flat on the PCB and the pins to wet properly every time
Electronics Forum | Sun Oct 27 07:56:58 EST 2002 | wongmanchung
Does any expert here know the specification of board deflection when we mounting component by pick and place machine? That is when the nozzle place the chip on the pcb, the board will have some deflection. And are there any requirment that we need t
Electronics Forum | Fri Jan 03 16:14:37 EST 2003 | Jacques Coderre
Hi Jon, Flip Chip is chosen as an interconnect approach when one needs improved performance (high pin count, high frequency, noise reduction or improved heat dissipation.Another driver is size...Flip Chip greatly reduces the area and therefore is cho
Electronics Forum | Thu Jan 16 17:54:12 EST 2003 | Ren�
Hi burb , reflow temps are same than other profiles just follow your solder paste recomendations , Will help you a lot a solder paste with Silver , or if you want to eliminate completely the granular looking , use nitrogen with your oven ( You will s
Electronics Forum | Mon Jan 20 01:46:24 EST 2003 | Claudia
I am looking for a FPBGA adapter (pin 256 pitch 1.00mm size 17mm x 17mm). We need the adapter to interconnect the FPBGA from the handset board to a SW test board. Question: Where can I find BGA adapter with different heights? What do we have t
Electronics Forum | Thu Feb 13 10:38:51 EST 2003 | davef
Given that you are bridging front to back, contast the situation with the thiefs used to prevent bridging when wave soldering SOIC. If this is reasonable, the thiefs should be located behind the trailing connector pins. You can prove-out this [and
Electronics Forum | Fri Feb 21 08:41:06 EST 2003 | davef
Yes. Reflow soldering PTH components goes under different names. * SMTnet's friend Bob Willis popularized the "intrusive reflow soldering" term. * Jim Blankenhorn, another of our friends, and others popularized "pin and paste". * Still others use
Electronics Forum | Fri Feb 28 11:08:56 EST 2003 | pauld
I had the same concern. The connector pins are gold also. I am waiting for a response from AMP to supply some of this wonder wax. I can inspect the HASL fabs for proper hole diameter, but I do not have a warm feeling I should be getting involved with
