All Questions
Tagged with pcb-assembly packages
10
questions
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,...
- 607
0
votes
1
answer
70
views
SMT PCBA production
I am interested in setting up an SMT factory for producing PCBA. I have researched and know the whole assembly process such as solder paste application, reflow oven, etc. Regarding the packaging of ...
- 13
0
votes
1
answer
791
views
Remove/exclude exposed pad of QFN package from PCB layout
I am doing a PCB layout with a Atmel/Microchip MCU ATSAML21E18B-MUT which has QFN-32 package 5x5 mm. This board can have a maximum of 20x40 mm and I am having problems with space because the circuit ...
- 657
0
votes
1
answer
222
views
Minimum distances between box case connectors and PCB surface conductors
I am working on a few kV PCB design with external voltage connectors (HIGH and GND levels). So user interface connectors are thought to be bananas jacks (they support until 7kV but has soldering ...
- 851
2
votes
2
answers
921
views
Cost effect of different component packages during PCB assembly
We are looking at starting PCB design in house, up until now we have outsource design and manufacture. This means that we have yet to see the real cost of the PCB, components and assembly as discrete ...
- 4,146
7
votes
2
answers
556
views
Do packages have to be centered in eagle to export valid pick and place data?
I am working on a PCB featuring this SD card connector
http://media.digikey.com/pdf/Data%20Sheets/Amphenol%20PDFs/101-00313.pdf
In the technical drawing, it seems that the origin of the part is the ...
- 231
1
vote
1
answer
295
views
Best way to prototype a TDFN package chip (MAX9814 and MAX9820)?
For my engineering project, we wanted to use the gain control and amplifier available on these two chips, but are finding difficulty with prototyping them as they are so tiny. One of the chips is a 14 ...
0
votes
2
answers
118
views
Can I mount LTC6102 on breadboard?
LTC6102 is a shunt resistor current sensor with the following datasheet:
http://cds.linear.com/docs/en/datasheet/6102fe.pdf
The package Description has come on page 24. If everything is in mm, then ...
- 3
9
votes
5
answers
6k
views
Which is easier to solder: TSSOP or QFN?
Which package easier to solder on home-brew PCBs:
TSSOP
QFN
I generally use solder paste and hot-air / hot-plate.
- 5,219
2
votes
2
answers
226
views
What does "Pins are on 0.17" centers" mean?
I'm looking at some switches (here) and the description reads:
Small PC mounting slide switch features SPDT contacts and white
positive action slide lever. Size about 0.56"L x 0.25"W x 0.34"H
(...
- 147