Reverse aspect ratio capacitors

I used 0306 parts a year or two ago and I had no problem at all with them. My board manufacturer was somewhat higher end (Tyco Santa Clara, I seem to recall), but with the proliferation of smaller parts (0201 come to mind) no PCB manufacturer that does fine pitch should really have any issues with them.

Note that the stuff/reflow people need to take care with the solder stencil, but there's plenty of knowledge out there to deal with this stuff.

Cheers

PeteS

What advantage do these components offer over the incumbent types?

I'm sure there are some, just not thinking of them, only the disadvantages, such as not being able to route as many traces through the middle.

These components have lower ESL (because they are physically shorter in the signal path).

Cheers

PeteS

Roughly one quarter the equivalent series inductance, which results in a self-resonant frequency that's roughly doubled. Additionally, they more closely match the width of a 50 ohm microstrip trace (on a regularly spaced four layer .0625" board, this is usually in the ballpark of 25 mils wide), so there's a small but measuable improvement in transmission flatness.

---Joel

Lower inductance

Bye. Jasen