540-AG11D-ESL-LF=500 DIP,GF/SN DIP Socket Type:Closed Frame Contact Fabrication:Stamped & Formed Number of Positions:40 Profile:Standard Row-to-Row Spacing:.6 in Closed Frame Stamped & Formed 40 Standard | Dip Socket | Alias Number: 540-AG11D-ESL-LF | TE Connectivity