PCB Electrical Testing
As a trusted supplier of manufactured PCB, MOKO technology has in house electrical testing facilities. We make sure that they are of high quality. We monitor the quality of the PCBs ourselves and hence we are very confident we can meet the standards that we have promised.
PCB electrical testing types that we have made possible due to fixtureless testers, ATG test machines. We also boast universal grid testing capability.
With every custom PCB order, we use custom fixtures.
Here’s a basic, brief outline of our very broad testing capabilities:
- Bare Board Testing
- Resistance Testing
- CAD/CAM Data Use
We charge a net or a plane and we measure the induced capacity by probing each net.
Both resistance and capacitance tests can be carried out as per requirement.
This method may encounter inaccuracy of results as there is an inbuilt variability in the manufacture of circuit boards. However, using field-effect testing for searching for shorts uses a very similar approach as well.
This is a measure of how much any path resists the flow of electrons. It is directly proportional to the length of the conductor as a longer length means longer travel distance for the electrons so they would face more resistance in traveling.
Also, thicker conductors have lower resistance because electrons repel each other so they prefer to travel on the “skin” or surface of the path, the more surface area there is the less resistance is offered.
This study shows that resistance is inversely related to the cross-sectional area and directly to the conductor’s length. Copper is a good conductor thus it has low resistance and deviation in resistance may represent defects.
In order to meet class 2 requirements. Advanced test processes make use of CAD/CAM data and optimize both ATG and test trace programs ensuring double compliance.
As per the standards, we optimize out midpoints of nets and test 100% of the networks on the board for network and isolation to ensure that we are following the IPC 9252 requirements.
Shorts test:
Check to make sure there are no shorts, between separate nets.
Opens test:
Ensure current is flowing from one node to the nest and resistance of the conductor is as required.
NODE:
A connection point between an off the board component and a network.
Net:
When we go fro source point to the target point, the path of connections is called net; it includes lands and vias.
Leakage:
The flow of current between 2 conductors should isolate and hence no current should flow. This must be prevented to prevent noise.
Isolated land
A test point that is single and not connected to other test points
Land:
Surface mount pads, component pads, hole pads, and gold finders are examples. They are used for connection and attaching components.
In-Circuit test:
A test which is performed after assembly operations, checks for open and shorts after components are installed.
Isolation Resistance:
This is the capacity to tolerate resistance between the non-connected traces of the circuit board and its lands.
As is clear from the discussion above we have all of the equipment and skilled resources necessary to carry out all types of PCB electrical testing procedures. Thus we know how to follow the PCB electrical testing standards that will ensure premium quality. We provide all types of testing mentioned above including bard board testing, resistance testing and we use CAD/CAM data to carry out advanced test processes.
With your orders, we are happy to provide you FREE PCB electrical testing so that you can ensure the quality of your printed circuit boards at our facility without having to ship to a 3rd party and getting it tested at their facility.
As this is an essential step of prototyping PCBs thus it is definitely a way to save your time and money!
So what are you waiting for!
Order now and avail you FREE PCB Electrical Testing from MOKO technology!
