Electronics Forum: class 3 (Page 3 of 37)

How to Differentiate Class 3 and Class 2 products in terms of process

Electronics Forum | Sat Jan 10 05:55:13 EST 2015 | jandon

Rework is acceptable in class 3 but hardware defects shall be documented before rework and rework shall be documented.

How to Differentiate Class 3 and Class 2 products in terms of process

Electronics Forum | Mon Dec 29 23:35:42 EST 2014 | abhilash4788

Dear All, I'm just a budding engineer in EMS field. Here we used to manufacture different classes of PCBA. I would like to know about different process that need to be considered while manufacturing class 3 product. If we are going for microscopic

How to Differentiate Class 3 and Class 2 products in terms of process

Electronics Forum | Mon Jan 12 21:31:26 EST 2015 | warwolf

The closer your inspection the more defects you will find, the more rework you do the possible cost you will add and the potential increase of damage you could do to your products if rework is not up to a machine copyable standard. "Is there any in

How to Differentiate Class 3 and Class 2 products in terms of process

Electronics Forum | Tue Dec 30 09:31:52 EST 2014 | rgduval

I've always approached it like this: Design your processes and perform your work to class three standards, and inspect to the standard that is acceptable. That is, all work should be performed to the highest degree of quality. When the work is ins

SOLDER MASK PER ANSI/IPC-SM-840

Electronics Forum | Fri May 27 14:09:19 EDT 2022 | davef

No solder mask; Class 2 => Class T; Class 3 => Class H.

Component classification - What is Class 1,2,3?

Electronics Forum | Tue May 26 03:33:19 EDT 2009 | kevyeoh

May i know how do we differentiate between Class 1, 2 and 3 components? What are the key differences between those three classes? When i check at IPC document, it is stated that Class 1: General Electric Class 2: Dedicated Service Electronic prod

Post reflow solder joint inspection

Electronics Forum | Mon Feb 02 12:36:41 EST 2004 | paul_bmc

90% of the assemblies our company produces are class 3 and we have no problem at all inspecting or getting class 3 quality through reflow. Rarely do we have touch up because of insufficient or poorly reflowed solder joints. What are the problems you

Solder Class 1,2,3

Electronics Forum | Thu Oct 05 07:43:22 EDT 2000 | Leon

Anyone know where I might find info on class 1 class 2 and class 3 solder joints.

IPC Standard for Acceptable and Reject Criteria

Electronics Forum | Wed Nov 03 09:18:27 EST 2004 | Simon UK

Hi Dennis, It is all dependant on what you state for the class of product i.e. Class 3 is the top end acceptance criteria used mainly in Aerospace and Military. You have 2 terms you need to grasp to avoid confusion. 1. Acceptance Criteria 2. Target


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