Electronics Forum: ipca610 (Page 16 of 21)

1206 Cap on 0805 Pad/Land

Electronics Forum | Thu Jan 24 04:54:43 EST 2002 | wbu

Well Greg, I don�t know YOUR 0805 Pads but if you look at the recommended pattern for 0805 in IPC-SM-782 you might notice that the Z-dimension is somewhat about the size of your 1206 part length. With that and assuming that you ask if the results wi

Solderball Removal

Electronics Forum | Thu May 23 03:10:43 EDT 2002 | ianchan

Hi mates, need your advise here. we have solderballs on a model due to neglect by stubborn folks to follow issued process control instructions. the post-reflow PCBA has solderballs stuck in the NC flux residue and is not in compliance to IPC-A-610

Cleaning solvent for no-clean board.

Electronics Forum | Thu Jun 06 02:52:42 EDT 2002 | ianchan

Hi mates, just my 2cents worth... some folks (like us) have product runs that have BGA using no-clean, coupled that with Class3 IPC-A-610 specs, topped with aerospace/military customer defined specs. we end up cleaning NC with a degreaser machine w

pcb board deflection when mounting component

Electronics Forum | Mon Oct 28 18:59:25 EST 2002 | tkenny007

Specs for Bow and Twist for PCBs (IPC-A-610C, 10.6. There may be an update by now). I also have a note in our quality guide referencing (IPC-TM-650, 2.4.22) and (MIL-STD-105D). In summary, a PCB should not bow more than 0.040" with all four corner

bulk feeding chips

Electronics Forum | Wed Feb 26 17:05:42 EST 2003 | davef

Q1: Are the markings on resistors the actual value? A1: Generally, resistor marking indicates the value of the device, where the first two digits are the value and the third digit is the multiplier. Q2: Do AOI machines look for these markings or do

Immersion Gold over Nickle de-wetting problem

Electronics Forum | Fri Mar 07 05:36:21 EST 2003 | O' Connor

Hi Again, In answer to DaveF - Yes solder is fine where the solder paste is deposited , but the part of the pad visible after pasting is still visible after reflow. Previously the solder paste & all the gold diffused & flowed giving a complete silve

Manual Visual Inspection Benchmarks

Electronics Forum | Thu Jun 14 02:00:01 EDT 2001 | ianchan

Hi mate, AOI seems great for : 1) missing 2) wrong parts 3) wrong orientation 4) x-y axis misalignment 5) upside down placement 6) etc.....? AOI shucks for : 7) unsolder (joint) defect 8) tombstone / tilt My guys are evaluating AOI m/c, for substi

IPC Standard for Acceptable and Reject Criteria

Electronics Forum | Wed Nov 03 14:46:29 EST 2004 | dramos1

Hi Russ, Thanks for the reply. In IPC-A-610 Rev. C on section 5.2.9 {Mounting - Connectors] page 5-21 on the manual [January 2000], the acceptable class [1,2,3]listed 3 items. In order for the connector to be accepted, are all 3 items must be met? I

PCB Warpage

Electronics Forum | Thu Apr 07 20:16:23 EDT 2005 | davef

Q1) Simple way to measure the PCB warpage A1) IPC-TM-650; Method 2.4.22 Bow & Twist Q2) What is the maximum warpage can the SMT machine allow the to accept and place the component without problem. A2) That depends. IPC-A-610 Acceptability of Elect

how clean is clean?

Electronics Forum | Fri May 27 17:21:35 EDT 2005 | mrclean

Dear SM Rookies, Another acceptable test method is visual inspection. IPC-A-610 details what to look for with different contaminants, providing magnified pictures of the possible visual residues. With an existing cleaning process, magnification


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