Questions tagged [manufacturing-process]
The manufacturing-process tag has no usage guidance.
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Why do some diodes have a glass package?
Put simply, why do some diodes such as most Zeners and Schottky diodes have a glass package as opposed to the more traditional plastic package?
Is it ease of manufacturing, thermal properties, or ...
CommunityBot
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How long can the leads protrude for a typical selective solder machine?
I have an LCD who's leads extend about 10mm past the board surface.
Can a typical selective solder machine fountain reach this high?
If not, any suggestions on the best way to handle long ...
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Why can my bare PCB be magnetized?
I am working on a magnetic sensors design and noticed that my measured magnetic field bias shifts over time. I have studied the bare PCB and measured that it can be magnetized with a strong magnet.
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What components have a MSL of 5 and 6?
Moisture Sensitivity Level (MSL) relates to the packaging and handling precautions for some semiconductors.
Components with an MSL of 1 have an unlimited floor life, whereas components with an MSL of ...
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Process technology: LP and LPH
My question is related to the following news regarding IC process technology:
Samsung has introduced 28-nm LP HKMG and a new variant, 28-nm LPH HKMG process technology.
Following abbreviations are ...
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Component manufacturing and placement accuracy/precision
I am involved in a community project where I need to employ computer vision on common smartphone models (Samsung Galaxy S 5/6/7, iPhones etc.). Doing that involves calibrating the phone's camera for ...
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Will a 0.400mm thick PCB be too flexible?
My PCB will roughly have the following stackup:
35um copper foil (tracks)
100um FR4 prepreg
200um FR4 core
100um FR4 prepreg
35um copper foil (tracks)
This gives a total board thickness of around ....
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How much silicon is required for the most common ICs?
Where can I find information about the die surface for various ICs? I'm thinking about opamps in the first place.
The surface area is of course dependent on the features of the ICs (for opamps rail ...
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Anyone know the premise of this PCB assembly note?
The assembly note states:
Bake bare PCBs in a clean and well ventilated oven prior to assembly at 125*C for 24 hours.
Why is this necessary?
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Why solvent cleaning of clean wafers includes de-ionized (DI) water?
Solvent (or solution) cleaning of clean wafers includes acetone wash, isopropyl alcohol (IPA) wash and de-ionized (DI) water wash, followed by drying in nitrogen.
What's the purpose of using DI water?...
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What are the manufacturing difficulties for a large Li-Ion battery pack?
How is a large Li-Ion battery pack, such as in a car, manufactured? What makes it difficult to produce, if anything?
This question is born from the high cost of Tesla Model S, which is around $70k. ...
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How are few-nanometer multigate MOSFETs fabricated?
Intel and IMEC came up with multigate MOSFET designs with channels as narrow as new nanometers. Which methods/techniques/machines are used to pattern/fabricate such small features?
(source)
(source)
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How do custom security certificates find their way onto mass manufactured products?
Amazon and Microsoft both have IoT services that manage message and state brokering. These sort of services generally require machines to have unique security certificates embedded into the firmware ...
CommunityBot
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Custom fiber optic cable simulation
I am looking to create a custom & precise static optical distribution along the length of a fiber optic cable. The idea involves manipulating an optical fiber during manufacturing to produce the ...
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Optimizing product tests?
I'm currently working for a company where I design and implement an automated test program to test our products. Currently our tests take quite a bit of time (several minutes per unit) and need to ...
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