How about a piece of foil tape? Ben -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Collins Sent: Thursday, August 2, 2018 1:35 PM To: [log in to unmask] Subject: EXTERNAL: [TN] UV protection for an IC Hello TechNet! I've got a customer who is looking to protect an IC from exposure to UV. It is a tiny 24 ball BGA (2.3 mm square). They are suggesting a dam and glob-top solution, but I'm concerned that there isn't enough room around it (very, very small board). I've suggested a dab of black conformal coating material on a brush. Any other great solutions? -- Graham Collins Senior Process Engineer Sunsel Systems (902) 444-7867