Kelly, From Enthones data sheet, the dielectric strength is listed as >500 VDC. This should be volts per mil. If you need additional information, you can contact our Enthone technical rep (Greg Beck) at 800-548-9801, ext/box 7213 Hope this helps. John ______________________________ Reply Separator _________________________________ Subject: Enthone DSR 3241 Solder Mask Author: [log in to unmask] at corp Date: 5/4/95 4:06 PM From: Kelly Kovalovsky, Raw Card Quality Engineering _ Phone:704-595-7336 Tie Line:795-7336 FAX Ext. 4727 Subject: Enthone DSR 3241 Solder Mask Can someone provide me with the dielectric strength of Enthone DSR 3241 solder mask? Kelly Kovalovsky IBM Microelectronics Division 6800 IBM Drive MG12/251 Charlotte, NC 28262-8563