Cat5 RJ45 plug, translucent blue housing
The 5-557973-3 is an 8p8c RJ45 plug from TE Connectivity AMP Connectors, built for Cat5-rated Ethernet terminations on flat oval stranded cable. The translucent blue polycarbonate housing accepts 26-28 AWG conductors via IDC contacts with 50.0µin gold plating on phosphor bronze.
Obsolete — sourcing through independent channels
The 5-557973-3 is marked Obsolete by TE Connectivity AMP Connectors. No official successor or pin-compatible replacement is listed from the original manufacturer. Available through independent surplus channels; quantities are lot-specific and confirmed at RFQ. Bulk packaging is standard.
