How should you tie wires in a cable harness according to IPC?
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.
What is the correct mounting sequence for screw connections?
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 [...]
According to IPC, do you have to wear ESD-safe gloves when handling ESD-sensitive products?
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 [...]
What does IPC mean by wire diameter?
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.
What does IPC mean by disposition?
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. [...]
How much light do you need in your workplace?
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 [...]
What does IPC mean by a process indicator?
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 [...]
Who determines in which product class a product is produced?
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 [...]
After soldering, the insulation of the wire has melted slightly, is this allowed for class 3?
Yes that is allowed. It's almost impossible that this will not happen. Due to the heat from the soldering iron, the insulation always melts slightly backwards …..unless you use a heat shunt (heat sink) or a heat-resistant insulation (such as [...]
With what magnification factor do you have to inspect the cleanliness of the printed circuit board?
This is stated in both the IPC-A-610 and the J-STD-001. IPC prescribes that the inspection magnification for cleanliness can take place without magnification (with bare eyes). However, “high density boards” (printed circuit boards on which the components are placed very [...]
