Electronics Forum | Mon May 15 18:05:11 EDT 2000 | Ashok Dhawan
Busko I could not find anything related to chip stacking in IPC-7711. I guess you meant that some changes will be coming. Probably , a task group is working on that. Can you fax or e-mail that info so that I can have access to that info ? I will ap
Electronics Forum | Wed May 17 05:13:22 EDT 2000 | Chris May
You can refer to ANSI/J-STD-001B section 6.4.3.1 which states: "When part stacking is permitted by the assembly drawing(s)/ documentation, parts SHALL not violate minimum electrical spacing between other parts or components such as terminals or othe
Electronics Forum | Mon Feb 03 10:28:21 EST 2003 | gregp
The advantages of bulk feeding vs. tape and reel are numerous. Who is currently employing bulk feeding? If you are, what is the application (HVLM, etc..)? If you are not, why not? I am leaving this question very open initially in order to recieve a
Electronics Forum | Mon Feb 03 17:30:12 EST 2003 | gregp
Thanks for the reply Jon. You say your "advantages did not cancel out or out measure the disadvantages". What were the disadvantages other than lead time? Another question...you say your are not currently using bulk. Does this mean that you used b
Electronics Forum | Mon Feb 10 10:24:43 EST 2003 | gregp
The Universal chipshooter (Sanyo) has automatic X-Y pick-up correction as standard. Are the upside-down resistors an issue for inspection purposes? Do you use AOI? Can you really read markings on 0402 resistors?
Electronics Forum | Wed Feb 26 13:21:30 EST 2003 | gregp
Are the markings on resistors the actual value? Do AOI machines look for these markings or do they just look to see if a component is present and placed well? Can anyone attest to the solderability of upside down resistors? Can anyone argue that u
Electronics Forum | Wed Nov 08 05:19:28 EST 2006 | amigo
It's not underfill is it? Sorry, but i don't know what is underfill, if you mean BGA, yes it is BGA !also sorry for very very late reply
Electronics Forum | Fri May 12 10:17:54 EDT 2000 | Wolfgang Busko
Hi Ashok, you may look through the archive for "patches - Wolfgang Busko 09:57:37 11/12/1999" it�s exact the same subject. Do you have the newest IPC-standart Jeff is talking about in that thread ? What�s the reason for this measure, component-sho
Electronics Forum | Wed Feb 12 10:03:47 EST 2003 | stefwitt
Greg, you pointed out yourself the many advantages of bulk feeding. I would like to mention that the higher component accuracy and the feeding track accuracy of the bulk feeder contribute to an improved pick failure rate of small ( 0402�s ) component
Electronics Forum | Fri Feb 21 10:03:43 EST 2003 | genny
Sure they'll do it...If you're willing to pay double or triple the cost. It might not be as easy as you think. the value is usually marked in white over the black carbon area that actually is the resistor. Underneath is just the white ceramic carr
