What does the ED suffix call out in Vishay part number CRCW04021M00FKED? Is it a different part from the EE of CRCW04021M00FKEE?
The two digit suffix for Vishay CRCW series of resistors, calls out a packaging code.
ED = 10000 piece Tape & Reel package, on a 7" reel.
EE = 50000 piece Tape & Reel package, on a 13" reel.
Click here for the datasheet which shows other suffixes used for the different case sizes for the CRCW series.