In my experience, pretty much any of the commonly available 3 pin
ceramic resonators work at 4 and 10 MHz. I'm now using the ZTT series
from Digikey on 18C452 and 18F452 with the clock multiplier. Works fine.
At 16 MHz, however, I found anything but murata to be unreliable.
        In one product where we went surface mount, the surface mount 4 MHz
resonator with caps from Digikey was unreliable with a 16f628. We surface
mounted leaded devices until we got the board characterized by murata.

Harold



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