T3/DS3/E3/STS-1 Interface Transformers ELECTRONICS INC. EPR1306FE • Twelve Transformers in SMD Package • Return Loss meets G.703 Requirements • Operating Temperature : -40°C to +85°C • 1500 Vrms Isolation Electrical Parameters @ 25° C Primary Inductance (µH Min.) @ 25°C Primary Inductance (µH Min.) @ -40°C Leakage Inductance (µH Max.) Interwinding Capacitance (pF Max.) Turns Ratio (± 2%) Crosstalk (dB Min.) 60 40 .12 12 1: 1 35 @ 100 MHz Schematic 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Sec. Pri. Package 1.120 (28.45 ) .100 (2.54) PCA EPR1306FE Date Code Pin 1 I.D. .480 (12.19) 48 25 .660 Solder Pad Layout (16.76) 1 24 .025 (.640) .920 (23.37) .010/.015 (.254/.381 ) .280 (7.11) .016 (.410) .080 (2.03) .040 (1.02) .008/.012 (.203/.305) 0°-8° .040 (1.02) .045 (1.14) .630 (16.00 ) 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. CSR1306FE Rev. 2 2/25/04 JDG TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com