Solder Seal Lids
Solder seal lids, typically used to seal ceramic packages, combine the lid and an accurately aligned solder preform into a single unit. This type of assembly makes it easier to position the lid on the package, as the solder is already fixed in place. This type of lid delivers significant advantages over using separate lid and solder preform components.
Solder seal lids from the Hermetic Solutions Group are typically manufactured in Kovar, Invar and alloy 42/45/48. They can be plated with electrolytic and electroless nickel as well as soft electrolytic gold. Flat, stepped, and drawn caps are common configurations and solder options include 80/20 AuSn (most common) but Sn/Ag and Sn/Pb solder is also possible.
Flat lids are typically used for solder seal lids, but stepped lids are also an option. Rapid prototyping is available in small volumes even when no standard tooling exists.
Let us help you identify the best solder seal lid solution for your application, package and hermetic sealing process!