HIGH FREQUENCY MAGNETICS T1/E1 Single Through Hole Transformer • Operates at the DS1 rate of 1.544 Mbits/s and the CEPT rate of 2.048 Mb/s • Inductance unbalance of center-tapped winding is 0.3%, max Recommended transformer for new through-hole applications is 2745G3 • TM00156 • Operating Temperature Range: -40° to +85° C • Meets IEC 695, 2-2 flammability requirements • PWB Process Capability: Standard Printed Wiring Board assembly techniques, total-immersion cleaning • Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias ELECTRICAL SPECIFICATIONS AT 25° C Part Number 2662N DCR Ω max Turns Ratio ± 2% Inductance1 µH min (1-3):(4-6) (1-3) (1-3) (4-6) 1 : 1.14 CT 650 1.0 1.2 Leakage Inductance 2 µH max Maximum Interwinding Capacitance pF Primary ET Constant V-µs Minimum Interwinding Breakdown Voltage Vrms 1.3 30 21 500 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac SCHEMATIC 2662N 4 1 5 CT 3 6 1 : 1.14 ©2000 Bel Fuse Inc. Specifications subject to change without notice. 08.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T1-29 HIGH FREQUENCY MAGNETICS T1/E1 Single Through Hole Transformer TM00156 MECHANICAL 2662N 0.36 (9.14) MAX 0.51 (12.95) MAX 0.45 (11.43) MAX 0.155 (3.94) 0.015 (0.38) X 0.025 (0.63) (PHOSPHOR BRONZE, SOLDER COATED) 1 6 2 3 5 4 0.200 (5.08) 0.150 (3.81) TYP Unless otherwise specified, dimensions are nominal and in inches (millimeters). ©2000 Bel Fuse Inc. Specifications subject to change without notice. 08.00 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 G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com T1-30