Electronics Forum | Mon Sep 26 10:58:37 EDT 2011 | dyoungquist
Basically in loose general terms: IPC class 1 is for consumer products that you discard when they break. IPC class 2 is for industrial products that last longer than class 1 products and you can repair when they break. IPC class 3 is for military
Electronics Forum | Thu May 23 13:24:14 EDT 2013 | rgduval
We agree that it looks like a touch-up process. However, we're not certain that it would meet Class 3 requirements. It appears to be an incomplete solder joint. The outer bit of solder shows voiding to the inside bit of the solder joint, and it lo
Electronics Forum | Mon Aug 11 17:48:39 EDT 2003 | Brian W.
Assuming you are working to IPC standards, are you working to Class2 or Class 3? Class 2 has an exception to the 75% barrel fill (para 6.3.1, page 6-7). "As an exception to fill requirements of Table 6-2 on PTHs with thermal planes or conductor
Electronics Forum | Tue Mar 09 13:31:59 EST 2004 | blu_nozer
I suggest you look at the IPC/EIA J-STD-001C. It provides 3 different yardsticks depending on the end use of the equipment. Class 3 became the de facto military standard in Noth America since MIL-STD-2000A was withdrawn. Bob
Electronics Forum | Thu Sep 24 00:42:37 EDT 2009 | rohitfast
Can you pl let us know what was the ESD sensitivity level of your assembly? We are also using plastic stencil from last 3 years and not seeing any major diffficulties in our class-3 product.
Electronics Forum | Tue Jun 06 11:57:12 EDT 2006 | Chunks
IPC 610 says acceptable Class 1 (Class 2, 3 indicator) if they are entrapped/encpsulated balls within 0.13mm of lands or pads. or exceed 0.13mm in diameter. Defect Class 1,2,3: Solder ball violates min electrical clearance. Solder balls not entrap
Electronics Forum | Wed Feb 12 16:48:31 EST 2014 | gmcquoid
We are having an internal debate here related to minimum Conductor Width. Can you have your QA manager review this and advise. IPC-6012C-2010 3.5.1 Conductor Width and Thickness When not specified on the master drawing the minimum conductor width s
Electronics Forum | Mon Mar 26 11:20:39 EST 2001 | dblsixes
The pads are 0.070 x 0.012 ... as spec'ed, and as measured. The pad extends approximately 0.017 behind where the Class 3 fillet is required to be. (It used to be 0.037 on an older design that exhibited similar, but not as bad of heel fillets.)
Electronics Forum | Fri Sep 07 05:37:27 EDT 2001 | Peter W.
I'm looking for a supplier for eutectic SnBi solder paste and dispensible solder paste at class 3, 4 or 5. Has anyone good ideas?
Electronics Forum | Tue Oct 22 20:37:09 EDT 2002 | davef
Pd takes longer to desolve than the materials yer used to using. Search the fine SMTnet Archives for background on modifying your reflow recipe.
