Electronics Forum: having (Page 2406 of 3473)

Re: 112 pin TQFP PV

Electronics Forum | Thu Apr 09 09:25:04 EDT 1998 | Terry Burnette

| I am in urgent need of a pcb land patten (footprint)for this device. I have the component data sheet with with package dimensions from Motorola, but they do not include the recommended land pattern. I requested a patten over a week ago, but have

Re: Selective Wave Soldering

Electronics Forum | Tue Apr 07 10:01:04 EDT 1998 | Steve A

| Good Morning everyone. Per repeated suggestions I have been reading back issues of SMT and Circuits Assembly magazines. I have just read an article concerning selective wave soldering which I understand is to be used when active SMTcomponents are

Re: Selective Wave Soldering

Electronics Forum | Tue Jan 12 17:46:26 EST 1999 | Tom Gervascio

| | Good Morning everyone. Per repeated suggestions I have been reading back issues of SMT and Circuits Assembly magazines. I have just read an article concerning selective wave soldering which I understand is to be used when active SMTcomponents a

Re: It's already done!!!

Electronics Forum | Fri Apr 03 08:19:36 EST 1998 | Jon Medernach

| Hello, | We are currently trying to design and ultimately implement a system that will be able to count and manage component placement for three Sanyo chipshooters on three SMT lines. | As the number of components decreases in the reels we want to

Re: Reflow soldering a Flexi-Rigid pcb

Electronics Forum | Sun Apr 05 09:46:47 EDT 1998 | Earl Moon

| We are looking at reflow soldering some Flexi-rigid | pcbs. I have heard that IR reflow soldering can make the Polyimide "self heat" and cause de-lamination. | Does anyone have any info. The thermal problems associated with polyimide rigid/flex de

HASL PCB non-wetting

Electronics Forum | Mon Mar 16 01:06:25 EST 1998 | Victor Ng

Dear all, Recently I have a problem of non-wetting at our wave soldering process. It appears only on the SMT pads for the chip components (at the solder side) of the HASL PCB. With all the same parameters on the wave soldering machine, i

Re: Entek coating

Electronics Forum | Wed Mar 11 11:05:06 EST 1998 | Earl Moon

| I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles mak

Re: Entek coating

Electronics Forum | Sun Mar 15 23:58:01 EST 1998 | Phill Hunter

| | I am having a problem with Entek coated boards. The solder past seem to just ball up on the pads. I had no problems with the board when it was hot air leveled. The board is double sided surface mount. I have tried adjusting the oven profiles m

Re: Conformal Coating

Electronics Forum | Fri Mar 20 10:31:19 EST 1998 | Mick Jones

| I will be starting a conformal coating process soon, I am looking for any pointers on | 1) Best method for masking components, tape mask, liqued mask | 2) Which is best Spray or Dip? | 3) Compatiblity with no clean solder paste (flux residue) | I h

Re: Reflow oven feedback

Electronics Forum | Wed Feb 25 02:50:33 EST 1998 | Scott McKee

| I am currently evaluating some different reflow ovens | for a future purchase. The manufacturers we are | looking at are Conceptronic, BTU, and Heller. Any | feedback on these manufacturers would be welcome. | I am particularly interested in: | 1


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