T1/CEPT/ISDN-PRI Carrier Interface Transformers ELECTRONICS INC. EPA1071-EPA1074 • Isolation at PBX and Terminals • Dual Package Configuration • 1500 Vrms Isolation Electrical Parameters @ 25° C PCA Part Number OCL (mH Min.) EPA1071 EPA1072 EPA1073 EPA1074 1.20 & 1.20 1.20 & 1.20 2.00 & 2.00 1.20 & 1.20 Interwinding Capacitance (pF Max.) 30 & 30 35 & 35 45 & 45 30 & 30 Schematic B Schematic A 1 2 14 3 10 12 9 5 Turns Ratio (± 5%) Pri.:Sec. 1:2CT & 1:2CT 1:2CT & 1:1.36 1:2CT & 1:2CT 1CT:2CT & 1:1 Leakage Inductance (µH Max.) 0.50 & 0.50 0.50 & 0.80 0.60 & 0.60 0.55 & 0.50 8 7 1 2 14 3 5 12 0.70 & 0.70 0.80 & 0.80 0.70 & 0.70 0.70 & 0.70 Schematic 1.20 & 1.20 1.20 & 1.00 1.20 & 1.20 1.20 & 0.70 Schematic C 6 10 DCR (Ω Max.) 7 1 8 2 14 3 12 A C B D Schematic D 10 8 14 12 12 10 8 5 7 1 2 3 5 7 Package 14 8 PCA EPA107X D.C. 1 7 .375 (9.52) .790 (20.07) .013/.017 (.330/.432) .017/.023 (.432/584) .240 (6.10) .110/.140 (2.79/3.57) .600 (15.24) .300 (7.62) .200 (5.08) Bottom View .300 (7.62) .100 (2.54) Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSA1071-CSA1074 Rev. 2 7/21/03 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com