Electronics Forum: hole location tolerances (Page 7 of 30)

SMT before through-hole

Electronics Forum | Tue Aug 14 10:53:15 EDT 2007 | rgduval

Should be do-able. Check out a couple of things: 1. Temperature tolerance of the LED's. If they can't withstand reflow, then you won't be able to do it. 2. Height of the LED's versus the travel of your pick/place. If your pick/place head won't t

SMT Connector, Placement Issues

Electronics Forum | Fri Oct 10 17:27:10 EDT 2008 | wagoner

We have several similar parts in our factory and they usually don't give me any problem. One part has a 0.050 pin that goes into a 0.055 hole, and we place it with Panasonic MSR turret style chip shooter, which has a placement accuracy of only +/- 0

Re: Geometric Dimensioning and Tolerancing

Electronics Forum | Sun Jun 07 02:06:26 EDT 1998 | Earl Moon

| Earl, | As always, I am interested in what you have to say, but I am still a little vague on your application of ANSI Y14.5 as it relates to the manufacturability of an assembled printed circuit board. Are you implying that component placement coor

Re: Press fit connnector

Electronics Forum | Wed Feb 09 21:45:48 EST 2000 | Dave F

Sal: Hey that customer standing around staring at you sound like fun, yeh right!!! Wolfgang makes good sense, but, in addition, I�d like to drill-down on board fabrication (har har har) a little bit (har har har) more. You say the holes are the cor

Re: Reflowing a thru-hole part

Electronics Forum | Fri Sep 10 07:43:19 EDT 1999 | Christopher Cross

| I have a board that has surface mount on both sides . On this board is a 22pin connector which is the only thru-hole part.This part is located on the component side. I would like to reflow this part. Can this be done? If so, how can this be done?

Re: Reflowing a thru-hole part

Electronics Forum | Fri Sep 10 07:45:59 EDT 1999 | Christopher Cross

| | I have a board that has surface mount on both sides . On this board is a 22pin connector which is the only thru-hole part.This part is located on the component side. I would like to reflow this part. Can this be done? If so, how can this be done?

Assembleon Topaz X

Electronics Forum | Mon Oct 08 05:48:36 EDT 2012 | vinitverma

Dear Chris, N2324 and N2325 are for nozzle down sensors. THese sensors are located on the left and right side of the left and right walls of the head assembly respectively. There are very small holes in the walles through which these sensors transmi

Dream Machine

Electronics Forum | Sun Jun 24 12:32:22 EDT 2001 | Stefan Witte

I was dreaming about a real easy to use assembly machine. The software was written for operators and did not require more than a few hours training. Machine operations and board programming was written in clear language, icons, pictures and machine e

Re: Calculate SMD movement during reflow?

Electronics Forum | Wed Nov 03 20:02:44 EST 1999 | Anthony Winston

Well John here is the situation: I need to place an infrared transistor (optical element) with a tolerance of +/-.003", this is not a problem. A lens is positioned over the optical element and snapped to the PCB via three holes that have a toleran

Crazing or Delam - Thermal or Mechanical?

Electronics Forum | Thu Jun 25 22:25:24 EDT 2009 | boardhouse

In the life of this product that you have been doing this process, has the material alway's been IT180 material? One problem with Lead free material is that it is more fragile that standard FR4 Epoxy laminate. And is known to have chipping or fractu


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