T3/DS3/E3/STS-1 Interface Transformer ELECTRONICS INC. EPR1305S • Designed for Leading Transceiver IC’s • Eight Transformers in a SMD Package • Return Loss meets G.703 Requirements • Operating Temperature : -0°C to +70°C • 1500 Vrms Isolation Electrical Parameters @ 25°C Primary Inductance (mH Min.) Leakage Inductance (µH Max.) Interwinding Capacitance (pF Max.) Turns Ratio (± 2%) Crosstalk (dB Min.) 40 .15 10 1: 1 35 @ 100 MHz Schematics Sec. 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 Sec. Pri. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pri. Package 1.00 Max. (25.40) .125 (3.18) .050 (1.27) PCA EPR1305S Date Code Pin 1 I.D. .310 (7.87) .465 Solder Pad Layout (11.81) .030 (.762) .720 (19.05) .010/.015 (.254/.381 ) .280 (7.11) .018 (.460) .100 (2.54) 0°-8° .008/.012 (.254/.305 .035 (.889) .050 (1.27) .425 ± .005 (10.80 ± 130) 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. CSR1305S Rev. 1 2/25/04 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com