RoHS AT3973I Isolation Transformer Ethernet based LAN, WAN and other networking applications Designed to meet IEEE802.3u Requirements Industrial Operating Temperature: -40ºC to +85ºC Maximum Reflow Temperature is 250ºC/-5ºC, 20~40 sec (Ref to IPC/JEDEC J-STD-020C Standard) Electrical Specifications @ 25°C Part Number Turns Ratio AT3973I TX RX 1:1 1:1 OCL @100KHz/0.1V with 8mA DC Bias Insertion Loss 0.1 ~ 100 MHz (dB Max) 350uH min 1-1 0.5-30 Return Loss (MHz min) 40 50 60-80 DCR (Ω max) -18dB -15.5dB -13.6dB -12dB 1.0 Hi-Pot (Vrms Min) 1500 All specifications subject to change without notice. (Dimensions in mm) A PAD-D PAD-C B PAD-E E PAD-B PAD-A SUGGESTED PCB PAD LAYOUT D C I H G F Uint : mm/inch A=8.15/0.321 B=7.20/0.283 C=6.25/0.246 D=2.54/0.100 E=0.60/0.0236 F=9.90/0.400 G=6.1/0.240 H=0.60/0.023 I=0.25/0.010 J=0.25/0.010 PAD-A=5.08/0.200 PAD-B=12.0/0.472 PAD-C=2.54/0.100 PAD-D=1.02/0.040 06 949-356-1780 ALLIED COMPONENTS INTERNATIONAL 01/26/2015 15 www.alliedcomponents.com