Increasingly i find "out of stock" as the status of even pretty basic components at the usual suppliers (Farnell, Mouser, Digikey etc etc) and the lead times being quoted are getting ridiculous. For example, if you want a certain brand 100nf 0603 X7R cap, you'll have to wait until December (11 months lead time)
Yes, this is getting quite frustrating in the US, also. Every time an order comes in, I sweat that one or more parts will become unavailable.
I just had this with an inductor used in the power supply of a product I make. I checked all US distributors I know of, and none had any stock.
Arrow had stock in the Netherlands, I think, and got it to me fairly quickly. With basic SMT passives, there are tons of alternates, but for more
specialized parts, it can be a challenge. Also, Panasonic made a lot of niche parts that have been discontinued, requiring board redesign.
Jon