GESP TECH -TRUSTWORTHY ONE-STOP PCB SERVICES PCB ELECTRICAL TESTING
Introduction
We use PCB electrical testing at the end of the PCB production process. to ensure that the PCB is interconnected with the original board data. We use a flying probe tester to guarantee that each net is complete and does not short to any other net.
GESP performs electrical testing on your printed circuit boards. as part of its PCB manufacturing process to assure their quality. Please find a detailed explanation of how we do these tests and what they mean below. As a leading PCB manufacturer, we guarantee that we check quality at our own facilities. where we fabricate your printed circuit boards. Your PCB manufactured and tested by us. so you can be confident that your PCBs are defect-free and match the standards you expect.
BENEFITS OF PCB ELECTRICAL TESTING
- Electrical testing has a significant advantage in that PCB designs. with copper poured over the majority of the board surface are more likely to short circuit. Electrical testing is beneficial for such boards.
- A further benefit of electrical testing is that the cost of testing is a small percentage of the cost of the final board. resulting in a high ROI.
- Electrical tests, such as the Flying Probe allow for quick set-up.
- Furthermore, Flying Probe testing has been successful. in identifying design flaws in shorts and openings.
PCB ELECTRICAL TESTING TYPES
Pin-bed Testing:
Pin-bed testing involves putting the card on a frame. with retractable pins in connection with the same number of pads on our card . and connected to an interface that performs the various continuity, capacitance. and insulation tests necessary by the program. This method intended for large-scale production. because getting a product to market necessitates the quick production of PCBs for assembly.
Flying Probe Testing:
This very dependable type of testing uses a flying-probe test sequence, which probes the circuit board at high speeds in search of shorts and openings. Put the card vertically in the frame and the test probes are moved in the XY direction on both sides of the circuit . to place them tested exactly on the pads these electrical parts . The test leads are then moved in the Z-axis until they make contact with the pads. as shown in the figure below, thus allowing the software to perform the desired measurements . and display the results that determine if the card is correct (PASS) or rejected. Capacitance testing is a type of testing that looks for shorts in the board. In this process, put electricity into a net, and then measured the induced capacity.
Resistance Testing:
This kind of testing uses ohms to measure resistance. Resistance is a measure of how often electrons and atoms bump into each other. which can stop electrons from moving through a conductor. When you test for resistance, you want to see low resistance because that means the conductor is good. The longer and thinner a circuit is, the more resistance it has. This is something to keep in mind when testing.
Insulation Testing:
During the chemical manufacturing process of PCBs. extremely little copper residues may or may not attach to our card networks. showing a real short between them but lowering the separation distance. for which they were originally designed. The test intended to discover these issues between different networks. to guarantee that they are adequately insulated to avoid undesirable electrical interactions.
Comparative Testing:
You use a validated standard master board to teach a net list program. then compare your other boards to it. This testing may miss a master board flaw.
Continuity Testing:
This test verifies the resistance between test spots is within limits.
Adjacency Testing:
Isolating conductors tests for shorts. Test proximity or line-of-sight adjacency.