Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [fabrication]

47 questions
39
votes
7 answers

How do I make sure my electronics design is good from manufacturing perspective?

I am a beginner in electronics design. I have some experience with fairly complex PCB design. I want to design a product that will hopefully sell a lot. How do I ensure that the design is inexpensive from manufacturing perspective? I mean not for a…
superczan
  • 491
  • 4
  • 5
30
votes
7 answers

Is transistor the only electronic component on a CPU?

I have been reading about CPUs recently and came to know that all logical blocks and memory on CPU can be made out of transistors. So is it the only electronic component on CPU? Edit (Made after first two answers): But the making of CPU only talks…
Darth Pingu
  • 471
  • 1
  • 4
  • 7
19
votes
4 answers

Would you approve use of these PCBs??? Delamination issue

Our vendor pulled some PCBA out of storage, been sitting for about a year. They found about 5% delaminated. They claim it was 'because of the storage duration', but I'm not buying that. I think these boards were defective from day one. Yes, I…
Kyle B
  • 4,558
  • 10
  • 29
18
votes
7 answers

My PCB manufacturer only requires eagle board file, and not a gerber file is it fine to go about getting the board fabricated with him?

It's my first time getting a PCB manufactured. My manufacturer only requires eagle board file, but not a Gerber file. Is it fine to go about getting the board fabricated with them? Or should I be concerned about getting a faulty board made and…
Harshit
  • 191
  • 2
  • 5
18
votes
5 answers

Why MOSFET source is indicated with arrow ?

I know that , a basic MOSFET contains source and drain , and either it's a NMOS or PMOS ; it is indicated by an arrow at source . But let's look at a fabricated NMOS. Here we can easily see that either a pin is source or drain is totally depended…
Anklon
  • 1,186
  • 5
  • 17
  • 35
7
votes
3 answers

Are silicon microbolometers inherently more expensive than conventional CMOS light sensors?

We're finally starting to see practical thermal imaging sensors (microbolometers) entering the consumer market. However, they are still vastly more expensive than comparable visible imaging sensors. The most basic 384x288 17µm pixel (i.e., 32mm2)…
feetwet
  • 2,322
  • 9
  • 31
  • 55
7
votes
3 answers

Why more, smaller transistors increase power efficiency?

Transistors, bjt, MOSFETs OK got it. More transistors = better computing got it. But compressing the transistors closer to each in my mind only helps reduce the physical dimensions. So does a CPU or any electronic become more efficient because the…
Cit5
  • 235
  • 2
  • 9
7
votes
1 answer

What is the physical size of a logic gate?

I always hear about process size improvements in the news, but could never figure out how it translates into dimensions of a logic gate. I found a chapter from Weste's CMOS VLSI Design, that contains figures which looks like things I create when…
syockit
  • 173
  • 1
  • 5
6
votes
2 answers

How electronic components like diodes, capacitors, resistors are added to CPU?

I have been trying to understand how CPUs are manufactured with those large and complex circuits. But Making of CPU only talks about projecting transistor diagrams(May be that is the major part). Bu how additional components like diodes, capacitors…
Darth Pingu
  • 471
  • 1
  • 4
  • 7
5
votes
3 answers

Why are MOSFETs used for VLSI IC fabrication instead of JFETs?

Why are MOSFETs used for VLSI IC fabrication instead of JFETs? What are some reasons the use of JFETs is not common?
user46715
  • 51
  • 1
  • 2
4
votes
1 answer

What is the purpose of the gate runner on a semiconductor die?

With reference to the image of a FET die below, the gate pad is used to make connections from the die out to the device package. But what is the purpose of the gate runner? Why does the gate connection need to run around the device like that? Is…
Q''
  • 454
  • 2
  • 9
4
votes
3 answers

Ordering Integrated circuit fabrication

Is there IC fabrication services? You upload the IC design you want and pay. They send you physical IC of what you ordered. Something like 3D printing service, such as shapeways.com for example, but for Integrated circuit. Do such service exist? Why…
Mustafa
  • 209
  • 3
  • 6
3
votes
1 answer

Understanding fabrication steps of creating TFT MOSFET from ZnO

A few days ago I found this paper about fabricating a thin film MOSFET using ZnO at low temperature. It seems promising to me (to do at home, some people actually made their own MOSFET at home but using high temperature furnance,) since I don't have…
raspiduino
  • 173
  • 6
3
votes
2 answers

How are other chipmakers keeping up with TSMC if their processes are just the best?

In the news recently was Intel's stock falling 20% because its 7nm processes are being delayed by 6+ months. The argument seems to be that Intel is already behind (since they're using 10nm processes while TSMC is on 7nm processes, soon to be 3nm…
Allure
  • 163
  • 4
3
votes
2 answers

Thermocouple welder/fixture

I need to make around 500 or more thermocouples type J 30AWG per year. Currently I am using this thermocouple welder. The process is quite tedious. I need to strip the wire, sometimes twist the wire, use the pliers to hold the thermocouple, and weld…
Terrance
  • 31
  • 1
1
2 3 4