HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Hardened Transformer • Operates at the T1 rate of 1.544 Mb/s and the E1 rate of 2.048 Mb/s • Winding (4-1) is hardened to handle a 6A surge current for 1 second Winding (4-1) is designed to handle simplex-feed remote powering current • • TM00126 • Operating temperature range: -40° C 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 Maximum inductance unbalance of center-tapped winding is 0.1% ELECTRICAL SPECIFICATIONS AT 25° C DCR Ω max Turns Ratio ±2% Inductance1 mH Min (6-7) : (4-1)3 (6-7) (6-7) 1 : 1 CT 1.1 0.72 Leakage Inductance2 µH max Interwinding Capacitance pF max (4-1)3 (6-7) between (6-7) and (4-2)(3-1) 0.45 3.5 18 Part Number 2741F2 Minimum Interwinding Breakdown Voltage Vrms 850 1. measured at 10 Hz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac 3. connect 2 & 3 SCHEMATIC 2741F2 6 4 2 CT 3 7 1 1:1 ©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T1-59 HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Hardened Transformer TM00126 MECHANICAL 2741F2 0.56 (14.22) MAX 0.46 (11.68) MAX TERMINAL 1 IDENTIFIER 0.35 (8.89) MAX 0.110 (2.79) ±0.010 (0.25) 0.023 (0.584) SQ TYP (PHOSPHOR BRONZE, SOLDER COATED) 0.100 (2.54) 1 2 3 4 0.250 (6.35) 8 7 6 5 Unless otherwise specified, dimensions are nominal and in inches (millimeters). ©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 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 T1-60