Electronics Forum: square (Page 1 of 62)

square pads

Electronics Forum | Wed Mar 03 11:30:18 EST 1999 | dave reese

Are square pads more difficult to wavesolder than round pads? I am referring to a through hole board.

Re: square pads

Electronics Forum | Thu Mar 04 12:49:49 EST 1999 | SMTASSY

| Are square pads more difficult to wavesolder than round pads? | I am referring to a through hole board. | Usualy square pads are for indication of pin 1 on a DIP for example. There might be a difference in the capilary affect due to a different su

Why are square apertures better than round ones?

Electronics Forum | Wed Apr 28 02:02:03 EDT 1999 | Joe Cameron

Hello all, I read about Steve's headache a few articles back and I'm really interested by his tip. However, I'm still wondering why square apertures release solder paste better than round ones. For the same volume of paste, the surface area of the

Re: Why are square apertures better than round ones?

Electronics Forum | Wed Apr 28 04:26:24 EDT 1999 | Nigel Burtt

| Hello all, | | I read about Steve's headache a few articles back and I'm really interested by his tip. However, I'm still wondering why square apertures release solder paste better than round ones. For the same volume of paste, the surface area

QFP on going on square (now and again)

Electronics Forum | Tue Apr 02 14:32:28 EDT 2013 | babe7362000

As far as I know you will have to get a whole new nozzle.

QFP on going on square (now and again)

Electronics Forum | Tue Apr 02 17:15:58 EDT 2013 | dontfeedphils

This is where I purchase nozzles for our Jukis. You don't have to purchase the entire nozzle assembly, just the tip and slider... http://www.nozzlesupply.com/juki.htm I don't have any affiliation with this company, just a happy customer.

QFP on going on square (now and again)

Electronics Forum | Wed Apr 03 04:54:46 EDT 2013 | ericrr

Thank you for that, I see the #106 nozzle looks in better shape (with the rubber) I might try that nozzle and see how it goes on a few boards, then I could let the "higher authority" know.

QFP on going on square (now and again)

Electronics Forum | Tue Apr 02 13:43:54 EDT 2013 | ericrr

On one of the products uses a QFP (Quad Flat Package)which is not going on straight, maybe 20 pins per 4 sides. sometimes I have to tweak the alignment before the board goes in the oven, this practice can be a bit of a worry if you over tweak it - pa

BGA APATURE

Electronics Forum | Wed Nov 05 17:36:12 EST 2003 | Stephen

Make sure that the side of the square is the diameter of the pad, That is that the circle is inside the square not that the square is inside the circle. normally the aperatures are smaller than the pad to get gasketing. In this case the idea is to

BGA Square Aperture Formula

Electronics Forum | Fri Jul 07 13:37:46 EDT 2023 | davef

Use the volume of paste of your circular aperture as the starting point. Calculate: Volume = pi X (aperture diameter^2 / 4) X stencil thickness Determine the sides of your square aperture using the volume of paste that you calculated and the stencil

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