E4/STM-1/STS-3/OC-3 Interface Transformer ELECTRONICS INC. EPR1621GE • Designed for TDK 78P2253 Transceiver • • 1500 Vrms Isolation • • Operating Temperature -40°C to +85°C • Electrical Parameters @ 25° C Return Loss (dB Typ.) Primary Inductance (µH Min.) 36 -15 -20 Pins 1-3/6-8 1 MHz - 320 MHz 5 MHz - 100 MHz Bandwidth (MHz) DCR (Ω Max.) 0.1 - 400 0.30 Schematic 1 6 2 5 3 1CT:1CT 4 Package Dimensions A J N Pin 1 PCA I.D. EPR1621GE D.C. B Q Suggested Pad Layout P M D E C F H PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 K L I G Dim. Min. A B C D E F G H I J K L M N P Q .310 .260 .205 --.010 --.355 .016 .008 --0° .025 --------- (Inches) Max. Nom. .330 .280 .225 --.015 --.375 .022 .013 --8° .045 --------- CSR1621GE Rev. 2 11/8/01 Product performance is limited to specified parameters. Data is subject to change without prior notice. .320 .270 .215 .200 .013 .100 .365 .018 .010 .060 4° .035 .030 .100 .092 .460 Min. (millimeters) Max. Nom. 7.87 6.60 5.21 --.254 --9.02 .406 .203 --0° .635 --------- 8.38 7.11 5.72 --.381 --9.53 .559 .330 --8° 1.14 --------- 8.13 6.86 5.46 5.08 .330 2.54 9.27 .457 .254 1.52 4° .889 .762 2.54 2.34 11.68 TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com