It has a wide range of applications since it is a type Shield, 2-Piece.The Surface Mount, Through Hole allows it to be used for RF Shield in general.20-CBS is a series of RF Shields.
21M-CBSA-3.75X4.0X0.225 Features
As a type of Shield, 2-Piece Surface Mount, Through Hole value 20-CBS
21M-CBSA-3.75X4.0X0.225 Applications
There are a lot of Leader Tech Inc. 21M-CBSA-3.75X4.0X0.225 RF Shields applications.