Electronics > Projects, Designs, and Technical Stuff

0603 Metric Imperial Confusion

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bson:
I'd use imperial sizes down to 0201, then switch to metric and make sure to qualify it as such.  As far as I can tell this matches equipment manufacturers as well, at least based on what I've seen at Semicon West.

I wanted a rude username:

--- Quote from: NivagSwerdna on October 31, 2019, 08:05:19 pm ---I wonder if there are people who think in metric?

--- End quote ---

I do (along with the rest of the PCB design unless doing pure through-hole for fun), and it's liberating. The metric sizes precisely encode the device size ... no conversion tables required. But when ordering passives, searching is more effective in imperial.

Lunasix:
Some years ago, I ordered capacitors in 0603 size, but didn't seen it was 0603 metric (didn't know...) and received 0603 metric, which means 0201 imperial. Very small ! I always have these capacitors, and will never use them !
Now, before ordering, I verify the unity.

I wanted a rude username:
Challenge yourself.  >:D

0603 soldered onto pads designed for 1608 (imperial 0603):

Gribo:
Meh, try Imperial 0402 and metric 0402 for a challenge.

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