What is the difference between EPC21603 and EPC21603ENGRT

[Kristof_2649]

ENGRT indicates Engineer Grade, as opposed to Production Grade. Basically ENGRT are engineering samples. The details on this can be found here:

EPC ENGRT Suffix Meaning - Semiconductor / Discrete Semiconductor Products - Electronic Component and Engineering Solution Forum - TechForum │ DigiKey

Instructions on how to assemble these can be found here