2745AM2

HIGH FREQUENCY MAGNETICS T3/E3/STS-1 Through Hole Transformer • Operates at pulse repitition rates of 30 Mb/s to 60 Mb/s (includes both the DS3 and the STS-1 rate) Has three separate windings which can be configured for both 1:1 and 1:4 impedance ratios • • • • 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 TM00147 • ELECTRICAL SPECIFICATIONS AT 25° C DCR Ω max Leakage Inductance1 µH max Turns Ratio ± 2% Part Number (1-6):(2-5):(3-4) Inductance2 µH Min For 75Ω:75Ω Configuration Interwinding Capacitance pF min (6-1) (1-6) (2-5) (3-4) (3-5) Typical Bandwidth (3 dB) 40 kHz to 260 MHz Typical Pulse Rise Time (10%-90%) 1.4 ns Minimum Interwinding Breakdown Voltage Vrms 2745AM2 1:1:1 65 0.2 0.3 15 1500 1. measured at 100 kHz, 0.01 Vac, connect 2 to 4 2. measured at 10 kHz, 0.1 Vac SCHEMATIC 2745AM2 5 6 5 4 6 2 4 1 2 3 1 3 ©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 T1-111 HIGH FREQUENCY MAGNETICS TM00147 T3/E3/STS-1 Through Hole Transformer MECHANICAL 2745AM2 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 T1-112