C-2: Exemption Ref Number - you will only need to fill this data field when the RoHS Compliance Status is "With Exemption". We will need to know the exemption reference number you have claimed on this part. For example, if exemption 7c1 of "Electrical and electronic components containing lead in a glass or ceramic other than dielectric ceramic in capacitors, e.g. piezoelectronic devices, or in a glass or ceramic matrix compound" is used on this part, then please enter "7c1" in this section. If there is no exemption used for this part, please leave this field blank.