What is the difference between sensor gl5516 and gl5506?
I am thinking which type of light dependent resistor photoresistor LDR is better. gl5516 or 5506 sensor? Can anyone brief the main difference?
Oliver Smith
December 12, 2023
Electronic Manufacturing Questions Answered
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Browse Questions From Our PCB Experts
What is the difference between thin film and thick film precision surface mount resistors?
I’m using some 0.1% precision 10k and 150k resistors. They are thin film 0603 surface mount. For a lot more, there are also thick film types. Fundamentally and practically, what
Oliver Smith
December 8, 2023
What are the black spots in lead-free solder joints on PCB?
I am prototyping a PCB, using Chip Quik’s “SMDSWLF.031, a Sn96.5/ Ag3.0/ Cu0.5 solder with 2.2% no-clean flux. I find that the black spots appears frequently in larger pads on
Oliver Smith
December 1, 2023
What are primary and secondary sides of PCB?
I am designing a 2 layer PCB with components on both side of it. SMT components are one one side of PCB, but TH (through hole) components are on both
Oliver Smith
November 23, 2023
How do I find a PCB schematics for a device?
We are new brand of medical device. We are doing a device development recently. How can we find PCB schematics for reference?
Oliver Smith
November 22, 2023
How can I determine BGA land pad diameter for given ball diameter?
I’m working on a project which requires the use of a CSP package. The product’s datasheet provides ball pitch and ball diameter but nothing about the preferred land pad diameter.<br
Oliver Smith
November 21, 2023
What’s the meaning of “CR” marked on the PCB?
Receive the PCB prototype from supplier. And see a CR mark on the board. What does it mean? Is it related to quality control?
Oliver Smith
November 15, 2023
What should be the size of an NFC antenna given an operating distance?
I am dealing with a project about a PCB with NFC antenna. We are designing PCB now. Do anyone know about the size of an NFC antenna if we want
Oliver Smith
November 14, 2023
Do ICs have a shelf life?
What I would like to know is if ICs also have a limited shelf life and if so, do some types suffer more than others?
Oliver Smith
November 2, 2023
