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Questions tagged [manufacturing-process]

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0 votes
1 answer
617 views

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 ....
Troels Folke's user avatar
0 votes
2 answers
170 views

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 ...
FarO's user avatar
  • 1,316
9 votes
3 answers
2k views

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?
klamb's user avatar
  • 312
0 votes
1 answer
2k views

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?...
Sparkler's user avatar
  • 823
3 votes
4 answers
336 views

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. ...
DrZ214's user avatar
  • 1,077
0 votes
1 answer
76 views

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)
Sparkler's user avatar
  • 823
5 votes
1 answer
172 views

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 ...
Inc1982's user avatar
  • 239
1 vote
0 answers
93 views

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 ...
Miron Veryanskiy's user avatar
2 votes
1 answer
209 views

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 ...
ChewToy's user avatar
  • 155
54 votes
2 answers
12k views

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 ...
Hugoagogo's user avatar
  • 2,475
7 votes
2 answers
4k views

Microcontrollers Manufacturing Process

I'm interested into know what semiconductor manufacturing process use the most common PIC and AVR microcontrollers, in particular 8 bit microcontrollers. Obviously they are not at the same level of ...
Oceanic815's user avatar
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