You should never use/assemble damaged components. But if components are assembled undamaged and then machine soldered and they come out of the wave soldering machine / reflow oven with a small damage, then it is good to know what is [...]
There are 2 methods indicated by IPC: with cable ties (tyraps) with lacing (knots) Illustrations and requirements can be found in IPC-A-610 and IPC/WHMA-A-620.
This is described in the IPC-A-610. It is important that, for example, no locking ring / spring washer may be mounted on a plastic printed circuit board surface without an underlying flat washer. The correct choice of material (of the [...]
No, wearing ESD-safe gloves is better, but it is not mandatory by IPC. When you touch (lift up) the printed circuit boards (and also assembled printed circuit boards) at the edge (or at the corner), no contamination (finger spots) will [...]
The wire diameter is the total/overall diameter of the wire (including insulation). This is also called the outside diameter. This is described in the IPC-A-610, J-STD-001 and IPC/WHMA-A-620 standard.
Disposition is a technical term used to indicate that a product is not approved. The product is “disposed” (put aside) and then it is decided (usually in agreement with the customer) what to do with it to get it functioning. [...]
IPC indicates that the minimum lighting in the workplace should be about 1000 lm / m2 in order to be able to work (solder) and inspect properly. The colour temperature is also indicated. For further information see the IPC-A-610, J-STD-001 [...]
A process indicator is a deviation on the product (not a defect) that does not affect function, fit or reliability. Think of “minor flaws” such as a slight discoloration of the insulation, a solder joint with a small void (pin [...]
IPC has 3 product classes: class 1 (consumer electronics), class 2 (industrial electronics) and class 3 (high reliability electronics). The customer may determine the product class in which the product must be produced. It is important that the inspector knows [...]
The theoretic part can be followed online. However, the practical modules must be observed “live” and assessed by a certified IPC trainer (MIT or CIT). So that is unfortunately not possible online (by webcam).
