HIGH FREQUENCY MAGNECTICS T1/E1 Single Through Hole Transformers • Operate as line-interface pulse transformers in DS1 and CEPT applications • 2662B and 2662B2 contain specific interwinding insulation to minimize capacitance Winding (3-2) (2-1) is highly balanced; Inductance unbalance is 0.1%, max • • Only difference between the 2662B and 2662B2 is the terminal length; only difference between the 2662H and 2662H2 is the terminal length TM00154 • 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 • Recommended transformer for new through-hole applications is 2745AF2 ELECTRICAL SPECIFICATIONS AT 25° C DCR Leakage Inductance µH max2 Direct Capacitance pF ET constant V-µs min (6-4) (3-1) (3-1) and (6-4) (3-1) Minimum Interwinding Breakdown Voltage Vrms 4.0 20.2 7.0 40 max 48 1000 3.5 4.0 20.2 7.0 40 max 48 1000 1 CT : 2 CT 3.5 4.8 10.2 7.0 90 typ 48 1500 1 CT : 2 CT 3.5 4.8 10.2 7.0 90 typ 48 1500 Turns Ratio ±2% Inductance mH min 1 (3-1) : (6-4) (3-1) (3-1) 2662B 1CT : 2 CT 3.5 2662B2 1CT : 2 CT 2662H 2662H2 Ω max Part Number 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac SCHEMATIC 2662B 2662B2 2662H 2662H2 6 3 CT 2 5 CT 4 1 1 CT : 2 CT ©2001 Bel Fuse Inc. Specifications subject to change without notice. 10.01 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T1-25 HIGH FREQUENCY MAGNECTICS T1/E1 Single Through Hole Transformers TM00154 MECHANICAL 2662B2 2662H2 2662B 2662H 0.36 (9.14) max 0.36 (9.14) max 0.51 (12.95) max 0.51 (12.95) max 0.45 (11.43) max 0.45 (11.43) max 0.155 (3.94) 0.200 (5.08) 0.015 (0.38) X 0.025 (0.63) (Phosphor bronze, solder coated) 4 5 6 3 2 1 0.200 (5.08) 0.150 (3.81) typ 0.015 (0.38) X 0.025 (0.63) (Phosphor bronze, solder coated) 0.110 (2.97) 4 5 6 3 2 1 0.150 (3.81) typ Unless otherwise specified, dimensions are nominal and in inches (millimeters). ©2001 Bel Fuse Inc. Specifications subject to change without notice. 10.01 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 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 T1-26