The NDMA234100 is an Ethernet transformer module designed to support high-speed differential pair transmission for 1, 2.5, 5, and 10 Gbit/s Ethernet applications. It features a 1:1 turn ratio (±3%) with four differential pairs (BI_DA, BI_DB, BI_DC, BI_DD), each rated for 960 mA current, and provides insertion loss of -2.0 dB maximum across 1–400 MHz and -3.0 dB maximum across 400–500 MHz. The module delivers excellent signal integrity with return loss of -22 dB minimum at 1–100 MHz, crosstalk isolation of -28 dB minimum at 1–100 MHz, and common mode rejection ratio of -30 dB minimum at 1–40 MHz. With 1,500 VAC isolation (60 seconds) and open-circuit inductance of 160 µH minimum at 100 kHz, the NDMA234100 is ideal for high-speed networking equipment, data center interconnects, and industrial Ethernet applications requiring robust signal conditioning and galvanic isolation.