Bill ) writes:

Xtal filter


$1 each, $5 total, see recent post

Ask for 400 of all of the above and see how quick those 'surplus'
sources go dark.

And of course, it's all interrelated.

If one doesn't buy a lot of stock to begin with, then they have to scramble
later to get suitable parts, and in the case of the mechanical parts,
that may mean reworking the chassis. Which means if a large stock isn't
bought in advance, then the chassis work can't be done in bulk, because
that might mean the prepunched and drilled chassis have to be scrapped.

And if production has to stop while new sources are discovered, that
may cause significant problems. That's why there's all those second
sources for semiconductors; if a manufacturer can't count on being
able to get those ICs on a continuous basis, they won't use the part.

Michael VE2BVW