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5 votes
3 answers
2k views

Question on "Parts should be used within 5 days after opening." statement on component shipping package

I've been given the task of verifying a batch of ICs from a chinese broker, to see that the chips the company has bought are what the broker claims they are. The package we've received looks like this,...
Lars Petersson's user avatar
3 votes
1 answer
239 views

What are my options for packaging a WLCSP IC as a DIP?

Hypothetically, let's say I have a chip in a super small WLCSP or BGA package that I want to have packaged as a plastic or ceramic DIP. No extra components; just the pads brought out to pins. Are ...
David Brown's user avatar
0 votes
0 answers
99 views

Reducing Thermal Pad Size Below Official Footprint - Can It Create Manufacturability Problems?

I'm using a DP83867 Ethernet chip by Texas Instruments in an S-PQFP-G64, 10 x 10 mm package, the mechanical dimension and its recommended footprint are shown at the end of the question. As shown, the ...
比尔盖子's user avatar
  • 7,218
1 vote
1 answer
375 views

Why have the same chip in the same package, but with a different number of pins?

STMicroelectronics offers the following two accelerometer chips. The LIS2DW in a 14 pin LGA package The LIS2DW12 in a 12 pin LGA package These two chips are functionally equivalent and have the same ...
ajheck's user avatar
  • 113
3 votes
1 answer
246 views

How are metal leads on through hole parts made?

For example, consider a TO-92 packaged part: How is one of its leads manufactured? Can they be customized?
Conor Patrick's user avatar
4 votes
1 answer
945 views

What manufacturing process produces resin coated chips in consumer toys?

I'm looking at high volume manufacturing and I notice that inside some consumer toys, there are chips which seem to be directly placed on the board and covered in resin. I know this has been done a ...
Robotbugs's user avatar
  • 415
3 votes
1 answer
3k views

Package on package and Flip chip what is the difference?

I am confuse with Package on package and Flip chip. Are they classified as multi-chip modules (MCM)?
pstan's user avatar
  • 921
13 votes
4 answers
5k views

What is the protective layer around microchips made out of?

I am just curious, what is the dark, almost black material that seems like all microchips are made out of? I did some searching on Google to try and find out, but I can only seem to find the material ...
renosis's user avatar
  • 273