SOIC tiny13

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I almost stepped in a trap. I designed a PCB for a SOIC tiny13. Now I find out that the tiny13 is available in either an EIAJ SOIC or a JEDEC SOIC! Digikey apparently is not aware of the problem because they just refer to the packaging as "8-SOIC." They also list manufacturer part numbers with "SJ" and "SSJ" sufixes. These parts are not on the datasheet.

Does anyone know if the "SJ" or "SSJ" sufixes are real or what they mean? Does anyone have a preference between EIAC or JEDEC SOICs?

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I ran into this too. The "SSJ or SSI", means that the chip is WIDE and will not fit on standard SOIC pads. What you want is the standard narrow body "SI or SJ". I got the ATtiny13-20SSI and guess what? They were really wide and would not fit on the pads. I was able to get the ATtiny13-20SI and went well.