ISDN U Interface Transformers ELECTRONICS INC. • Optimizied for Leading Transceiver I.C.’s • • Meets or exceeds UL1459 & UL1950 Standards • • 2500 Vrms Isolation • • See Selection Guide for I.C. Cross Reference • Electrical Parameters @ 25° C Part Number Turns Ratio OCL (mH Min.) IDC (mA Max.) Pri. DCR (Ω Max.) Sec. DCR (Ω Max.) Line Side Pins Schematic EPR1101 EPR1107 EPR1109 EPR1120 1.32:1 1.65:1 1.6:1 1.32:1 7-8.3 13-18 8.4-12.6 7-8.3 55 50 50 50 2.4 6.0 7.2 2.4 2.7 3.5 3.0 2.7 1, 4 1, 4 1, 4 1, 4 A B C A Schematic A 5 1 8 2 3 B 6 5 4 1 2 7 3 C 5 7 4 1 2 6 4 3 Package D 8 5 Marking : PCA EPR11XX D.C. B Pin 1 I.D. Dimensions 1 4 A C E H I F G PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 CSR1101,7,9,20 Rev. - Dim. Min. A B C D E F G H I ------.590 .120 --.840 ----- (Inches) Max. Nom. .750 1.110 .430 .610 .180 --.860 ----- ------.600 .150 .150 .850 .020 .010 3/30/99 Product performance is limited to specified parameters. Data is subject to change without prior notice. Min. (millimeters) Max. Nom. ------14.97 3.05 --21.34 ----- 19.05 --28.19 --10.92 --15.49 15.24 4.57 3.81 --3.81 21.84 21.59 --.508 --.254 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com