2745AK2

HIGH FREQUENCY MAGNETICS T1/E1 Through Hole Shielded Transformers TM00125 • Operate as line-interface pulse transformers in DS1 and CEPT applications Interwinding electrostatic shield for minimum capacitance and maximum EMI suppression • • 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 • • • Operating temperature range: -40° C to +85° C ELECTRICAL SPECIFICATIONS AT 25° C Typical Effective Distributed Capacitance pF (3-1) 50 - Part Number Nominal Turns Ratio ±2% Inductance 1 mH Min DCR Ω max Leakage Inductance2 µH max Interwinding Capacitance pF max Minimum Interwinding Breakdown Voltage Vrms (3-1) : (4-6) 2745H2 2745AK2 1 : 1.36 CT 1 : 1.14 CT (3-1) 1.24 1.25 (3-1) 1.58 0.87 (4-6) 0.50 0.78 (3-1) 3.3 2.0 (3-1) to (4-6)3 10 5 850 1000 1. measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac 3. with 2 grounded SCHEMATIC 2745H2 2745AK2 3 4 5 CT 1 2 1:N 6 ©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 T1-55 HIGH FREQUENCY MAGNETICS TM00125 T1/E1 Through Hole Shielded Transformers MECHANICAL 2745H2 2745AK2 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) 0.150 (3.81) 1 2 3 0.250 (6.35) 6 5 4 Unless otherwise specified, dimensions are nominal and in inches (millimeters). ©2000 Bel Fuse Inc. Specifications subject to change without notice. 09.00 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 G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com T1-56