ISDN Transformer EPA2787 ELECTRONICS INC. • 4000 Vrms Isolation Voltage • • Single Through Hole • • For ISDN Application • Electrical Parameters @ 25° C Inductance (mH Min.) Interwinding Capacitance (pF Max.) Leakage Inductance (µH Max.) @ 100 KHz, 0.1 Vrms @ 100 KHz, 0.1 Vrms @ 100 KHz, 0.1 Vrms 22 30 20 Eff. Dist. Cap. (pF Max.) DCR (Ω Max.) 150 Primary Secondary 2.9 ± 20% 5.0 ± 15% Schematic 1:2 1 8 2 3 7 6 4 1:2 5 Dimensions Package 8 PCA 2 7 EPA2787 3 Date Code 6 4 5 Dim. 1 A B C D E F G H I (J) B A (J) I F Min. .880 .680 .500 .500 .100 .200 .700 .025 .100 .095 (Inches) Max. Nom. .900 .700 .550 Typ. .140 Typ. Typ. dia Typ. Typ. . (millimeters) Min. Max. Nom. 22.35 17.27 12.70 12.70 2.54 5.08 17.78 .635 2.54 2.41 22.86 17.78 13.97 Typ. 3.56 Typ. Typ. dia Typ. Typ. . C D E G PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 H CSA2787 Rev. - 2/19/97 Product performance is limited to specified parameters. Data is subject to change without prior notice. TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com