BUF634A: BUF634AIDR IDR meaning

Apparently this SO-8 version is intended to replace all other versions that are NRND

Hello Robert, 

    The IDR stands for the packaging type of the BUF634A. In this case, the BUF634A is offered in the SOIC-8 pin package: I is kind of like a separating character, D stands for the packaging name SOIC-8, R is for tape and reel. A good example that shows a lot of the packaging names is the OPA2836 which can be found at this link. Also, I found a good application report which goes into the semiconductor packaging methodology more in depth linked here.

Thank you,

Sima

Thank you Michael on the correction of the I meaning!