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How to find extremely small components? (self.ece)

submitted 1 year ago by FruitfullyYours to c/ece

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I am working on some extremely small designs where the entire board is less than 15mm2. There are a surprising amount of very small ICs but I've found it's really tricky to actually do a thorough part search for tiny (sub 2mm x 2mm) parts.

Some vendors have CSP packages that are relatively huge while having other package types like X2SON which are actually smaller. What was called 'tiny' and 'smallest' a few years ago is actually pretty large by today's parts.

Any tips on how to find parts?

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[–] dragontamer 1 points 1 year ago* (last edited 1 year ago)

Have you tried just setting the search in Digikey to BGAs or CSP chips?

LPC11A04UK,118 claims 2.55x2.55

STM32G071EBY6TR claims 2.3 x 2.4mm

STM32G031Y8Y6TR claims 1.86x2.14mm.

Etc. etc.

All I did was select CSP from 36 pins and less. After that, you look through the "Supplier Device Package" section on the far right and that tends to have the dimensions.

No need to sort: there's only 42 of them. Look through all of them, pick out the ones that are small enough and focus on those.