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2 votes
0 answers
101 views

How old is too old for BGA chips soldering

I need to buy a batch of UFGBA100 STM32 MCUs from a Chinese broker. I'm concerned that in the quote they specified that the chips will have a date code 19+ (4 years old). How can this affect ...
mactro's user avatar
  • 497
1 vote
1 answer
80 views

What kind of displays and processors are used in consumer electronic products (like a coffee machine)? [closed]

I am presently working on the development of a smart kitchen appliance, which will eventually be sold in the market. As part of this project, I need to incorporate a touch display for the operation of ...
santosh kumar's user avatar
1 vote
1 answer
67 views

Best LCD for mass production

I'm designing a PCB that will be manufactured in small batches (a few hundreds). It will have a segment LCD with electronic components under it. I cannot choose between two form factors - with SMD ...
Archimedes's user avatar
0 votes
1 answer
52 views

Need help understanding how motors, sensors and other components of a prototype design factor into certifications for industry sale [closed]

I have built a prototype and I now need to create a production prototype that I can use as my template for a small 10-15 product unit batch order. I am in the United States where I plan to market ...
Pholotic's user avatar
0 votes
0 answers
91 views

Quintic QN8007B RoHS information?

We are planning to use the Quintic QN8007B FM transmitter in our new design because it is quite cheap and has I2S interface. I believe this chip is no longer produced, but it is possible to get hold ...
JohnDonut's user avatar
  • 115
1 vote
1 answer
237 views

Hi Pot / Dielectric Pass/Fail Recording

I just graduated last year with an Electrical Engineering degree. Currently pursuing a Masters's Degree, so I am fairly new to design. We have several HiPot Testers we use on the manufacturing line. ...
QuantumElectro's user avatar
8 votes
1 answer
718 views

Do Soft Termination Caps Really Increase Reliability?

I'm managing several designs. At one point I identified a few failures that were caused by 0603 caps failing short. After that I switched to all soft-term caps to hopefully eliminate the problem. ...
Drew's user avatar
  • 7,109
0 votes
1 answer
302 views

Mass producing my electronics/raspberry-pi idea - What are the steps? [closed]

Could somebody tell me what the rough steps would look like? I think I have a good idea. I have put things into practice, and it's working and so on, but it's very ugly. I guess, first I would have ...
Christian W. Mehring's user avatar
0 votes
1 answer
96 views

Production programming: is there a practical size limit to serialization length? [closed]

This is a follow on question from the answers of these two: Is it practical for firmware to be uniquely identified in production How to verify hardware is legitimate I would like to be able to ...
Lukeyb's user avatar
  • 223
2 votes
1 answer
115 views

Term for a guarantee a manufacture makes that a product will be produced for a number of years?

Sometimes manufactures of electrical components guarantees that a product will be produced for a number of years so you can rely on getting new components for future production runs. What is the term ...
bjarkef's user avatar
  • 738
3 votes
2 answers
347 views

Reduce BOM Lines or reduce BOM cost? How to make production cheaper? [closed]

We are designing a product that will hopefully sell many thousand units, and now I am at the stage of specifying what parts to use. We require three inter-board connectors, one with 10contacts and ...
SonderEng's user avatar
8 votes
2 answers
6k views

Serial Number Generation

I am working on a product that will need a unique serial number for each device. Are there any "recommended practices" for serial number generation? Since I never saw a device with serial number 1, ...
mFeinstein's user avatar
  • 4,333
2 votes
1 answer
207 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
1 vote
1 answer
280 views

Manufacturing a device from off-the-shelf components [closed]

I pursue an experimental project that comprises the development of a car GPS navigation unit and software for it. We develop and test the software on a working laptop-based prototype which has a USB-...
skanatek's user avatar
  • 123
-7 votes
1 answer
345 views

Sensory Chess Board [duplicate]

Possible Duplicate: Detecting object placement on a grid How could a checkered chess board be built so that it knows the location of the pieces? What options are available? Probably RFID chips? ...
Tyler Langan's user avatar

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