SM91073AL-E is a 10/100 Base-T Ethernet transformer designed to meet IEEE 802.3u (100 Base-T) specifications. This AEC-Q200 compliant component features an expanded operating temperature range of -40°C to +125°C, making it suitable for automotive and industrial environments. The transformer has compact dimensions of 12.80 mm x 8.89 mm x 9.50 mm with a 1.27 mm pin pitch and Cu/Ni/Sn termination for RoHS compliance. It is halogen free and available in tape and reel packaging with 600 pieces per reel. Common applications include Ethernet networking equipment, automotive infotainment systems, and industrial communication interfaces requiring reliable signal isolation.