2745G3

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