On 18/02/2011 03:46, Nathan House wrote: > There actually isn't an 'x' on mine. I finally found a picture of the > one I have in an ebay listing: > http://cgi.ebay.com/10-x-LM358DT-LM358-Low-Power-Dual-Op-Amp-SOIC-8-SMD-I= C-/320612943519?pt=3DLH_DefaultDomain_0&hash=3Ditem4aa605469f > > See how there's no markings? Bit hard to tell from the picture, but It looks like it's probably a=20 bevelled edge to indicate the side with pin 1 (bevelled edge to your=20 left, pin 1 will be at top, should have details in one of the datasheets) --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .