Electronics Forum: chip array resistors concave or convex (Page 1 of 1)

Concave Terminals Help. CP4 or GSM

Electronics Forum | Mon Nov 11 02:03:06 EST 2013 | dman97

Use fuji vision #12. That is for the resistor network types. You cant inspect the individual leads. Vision type 12 tell the CP that this is a rectangular chip with terminals. You don't need to define the leads in the PD just the overall shape of th

WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Mon Apr 10 11:56:35 EDT 2000 | Robert Hutton-Squire

Suggestions please... I have to place a number of 1206 chip resistor arrays on the bottom side of my PCB for wave soldering. The device consists of 4 x 0603 resistors in a 1206 package. The device is available with either concave or convex terminati

Re: WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Tue Apr 11 20:31:54 EDT 2000 | Dave F

Russ: You�re correct. I should have explained our reasons for preferring concave over convex better. First, we use both also ... we just prefer concave because they: * Don�t bridge any where near as easily. * Self-center better. * Seem to have mor

Re: WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Wed Apr 12 16:05:08 EDT 2000 | Russ

Thanks, Dave appreciate the info. One of my trains of thought was leading to the convex because I thought that having the "bump" would allow for easier wave soldering? I did look at some data we had and did find you to be correct, the concave hav

Re: WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Tue Apr 11 10:36:35 EDT 2000 | Russ

Quick question for Dave, Out of curiosity, why concave? I ask because we are soldering RNETs that come in either style and have not payed much attention to this. Russ

Re: reflow theta alignment

Electronics Forum | Fri May 29 20:15:15 EDT 1998 | Steve Gregory

Whoo-doggies Jason, you said a mouthfull!! (GRIN) Anyways, 'member what I said about me being a pack-rat? Guess what? I found some documentation that I've had for a while that does document the self-alignment forces that goes on when reflowing. I ha

Re: WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Mon Apr 10 22:17:34 EDT 2000 | Dave F

Rob: What was driving the uBGA bridging? On your arrays: * I doubt that your supplier would be pleased that you are wave soldering these pups. If you insist, present leads to the wave on opposite sides of the package at the same time. Is this an

Re: Resistor Paks on solder side of board

Electronics Forum | Thu Jul 20 15:37:53 EDT 2000 | Tekguy2000

These parts are flat chip resistor arrays that have 4 end terminations on each side. It looks liek an IC but is typically in an 0805 and 1206 package type with convex terminations. .031" pitch from termination to termination and .011" spacing between

Re: WAVE SOLDERING 0603 CHIP RESISTOR ARRAYS

Electronics Forum | Wed Apr 12 20:41:31 EDT 2000 | Dave F

Russ: That�s a pretty stand-up postin� bud. It�s neat that you can root-out that dirt. We couldn�t dig-up that stuff, if they threatened to shoot the dog. You could be correct about using convex for waving. We don�t wave RNET as Philips suggests

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