All Questions
4
questions
1
vote
1
answer
151
views
should land patterns match the typical or the maximum part footprint dimension?
I've read that for QFN packages at least, the width of the pads on the board should exactly match the width of the feet on the bottom of the chip. However, the datasheet for the part I'm working with ...
- 193
1
vote
2
answers
155
views
Why do datasheets include Tape and Reel information?
Specifically:
- Does a PCB designer need to be concerned with tape and reel information?
- Is the information intended for PCB assemblers, pick and place machines, etc?
- Will a pick and place ...
- 484
8
votes
3
answers
6k
views
Altium Database and Footprint density
I am currently trying to use the database in Altium, but I have one big question:
I was expecting to get one database entry per resistor value. But, for a single 100k 0805 resistor (for example), ...
3
votes
1
answer
523
views
Trace width specification in PCB land pattern detail
I came across this figure in the datasheet for an accelerometer. It gives a very specific trace width (0.15mm) to escape from the pad, as well as a minimum length (0.5mm) at that width. So far, the ...
- 8,604