HIGH FREQUENCY MAGNETICS T1/E1 Single Through Hole Transformers • • Operate as pulse transformers at DS1 and CEPT rates • Perform impedance matching and voltage transformation • for line transceivers • TM9913 Compatible with water-soluble flux, total-immersion cleaning and machine insertion Meets IEC-695, 2-2 flammability requirements Qualified per Bellcore TR-TSY-000357-1 ELECTRICAL SPECIFICATIONS at 25° C Turns Ratio ± 2% Part Number Primary Inductance* mH min DCR Ω max Leakage Inductance µH max Pri : Sec Pri Sec Interwinding Capacitance pFmax Interwinding Breakdown Voltage Vrms min Shielded Version 2745AJ2 1 : 1.07 CT 1.0 0.8 0.50 1.00 N/A 850 ___ 2745G3 1 : 1.14 CT 1.75 1.3 0.95 1.10 80 1000 2745AK2 2745CA2 1 : 1.36 CT 0.92 0.7 0.85 1.2 20 1000 2741H2 2745AF2 1 CT : 2 CT 3.15 3.0 1.55 3.15 23 1000 2741G2 * Measured at 10 kHz, 0.1 Vac Lucent IC Part Number Receive Transmit Bel Part Number Bel Part Number Application T7288 CEPT 75 / CEPT 120 2745AF2 2745CA2 T7289A DS1 2745AF2 2745G3 DS1 2745AF2 2745AJ2 T1 / CEPT 75 / CEPT 120 2745AF2 2745CA2 DS1 2745G3 2745G3 CEPT 75.1 2745AJ2 2745AJ2 CEPT 75.2 / CEPT 120 2745CA2 2745CA2 CEPT 75.1 2745AJ2 2745AJ2 CEPT 75.2 / CEPT 120 2745CA2 2745CA2 DS1 2745G3 2745G3 DS1 2745G3 2745G3 CEPT 75.1 2745AJ2 2745AJ2 CEPT 75.2 / CEPT 120 2745CA2 2745CA2 T7290A T7630 T7688 T7689 T7690 T7698 ©1999 Bel Fuse Inc. Specifications subject to change without notice. 06.99 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T124 HIGH FREQUENCY MAGNETICS T1/E1 Single Through Hole Transformers TM9913 SCHEMATICS MECHANICAL 2745AF2 2745AJ2 2745CA2 2745G3 2745AF2 3 4 2 5 1 6 0.56 [14.22] Primary 0.35 [8.89] max Secondary 2745AJ2 2745G3 3 0.110 [2.79] 4 0.150 [3.81] centers 0.023 [0.584] Sq typ (Phosphor bronze, solder-coated) 5 1 6 Primary Secondary 4 Terminal 1 ID 5 6 0.460 0.250 [11.68] [6.35] max 2745CA2 3 4 3 2 1 2 1 6 Primary Secondary Note: Unless otherwise specified, dimensions are nominal and in inches [millimeters]. ©1999 Bel Fuse Inc. Specifications subject to change without notice. 06.99 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 198 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F / 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite F23, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com T125