RoHS Single Port Isolation Transformer AT4218 10/100 Base-T for Ethernet Applications Standard Operating Temperature range: -0ºC to +70ºC Maximum reflow temperature: 250ºC/-5ºC for 20-40 seconds (Refer to IPC/JEDEC J-STD-02C Standard) Electrical Specificat ions @25oC Turn Ratio (±5%) TX (6-8):(11-9) CW/W (pF Max) @ 100KHz, 0.1V TX&RX OCL (uH min) @ 100KHz,0.1V TX&RX RX (1-3):(16-14) 1:1.414 12 140 1:1 o Electrical Specificat ions @25 C Leakage Inductance @ 100KHz ,0.1V (uH Max) DCR (Ω Max) TX&RX 0.20 0.30 Isolation Voltage (Vrms) 1500 All specifications subject to change without notice. MECHANICAL UNIT :mm/inch PAD A A A=12.70/0.50 Max PAD B B=7.15/0.282 Max Allied AT4218 YYWW C=6.20 max/0.244 max PAD C B PAD D D=8.89/0.350 PAD E E=1.27/0.050 Typ SUGGESTED PCB PAD LAYOUT F=0.25/0.010 Typ G=9.30/0.366 Typ H H=0.25/0.010 Typ I =0.90/0.035 Typ PDA-A=9.53/0.375 PDA-B=1.27/0.050 C F 0~8゜ I PDA-C=10.50/0.413 PDA-D=1.70/0.067 PDA-E=0.76/0.030 E G D SCHEMATICS 1 1CT:1CT 2 15 3 6 949-356-1780 16 14 1CT:1.414 11 7 10 8 9 15 INTERNATIONAL ALLIED COMPONENTS 9/18/2015 www.alliedcomponents.com