The GL5506 has a significantly lower resistance for a given amount of light compared to the GL5516 AND, in dark conditions, the resistance of the GL5516 is significantly higher in resistance (as you would expect).
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There is nothing about weight in the substrate datasheets I found.
Between CEM-3 or FR4, which is the lightest material ? What is the average weight by surface for CEM-3 boards ?
I’ve ordered fabrication and assembly of small PCB batches (100st) a couple of times already. Each time the factory asked me if I want to do test on the PCB. But I don’t what to do about it. And I test them by myself. Vervolgens, the result of the testing is unacceptable with 15% soldering problems. So bad. I think I will ask the supplier to test them before delivery.
I am designing a 2 layer PCB with components on both side of it. SMT components are one one side of PCB, but TH (door gat) components are on both sides. I need to understanding something mentioned by the supplier called primary and secondary sides.
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