ISDN Transformer ELECTRONICS INC. EPA2731 • S/T Interface Applications • Dual Transformer in SMD Package • Optional Packaging : Tubes or Tape & Reel • 2000 Vrms Isolation Electrical Parameters @ 25°C Primary Inductance (mH Min.) Leakage Inductance (µH Max.) Pins 1-4 Pins 5-8 22 22 A B 15 15 Interwinding Capacitance (pF Max.) A B 100 100 Pri. Dist. Capacitance (pF Max.) Turns Ratio (± 2%) A B 80 80 DCR (Ω ± 25%) A B Pri. Sec. 1:2 1:2 2.3 4 Schematics Pri, 1 A B Sec. 16 Pri, 5 Sec. 12 2 15 6 11 3 14 7 10 4 13 8 9 Package .940 (23.88) .120 (3.05) Pin 1 I.D. .100 (2.54) PCA EPA2731 D.C. .520 (13.21) .750 (19.05) .700 (17.78) .380 (9.65) .016/.022 (.406/.559) .120 (3.05) Solder Pad Layout .030 (.762) .010/.015 (.254/.381) .008/.012 (.203/.305) 0°-8° .040 (1.02) .700 (17.78) .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. CSA2731 Rev. 2 7/15/03 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com