2771D

HIGH FREQUENCY MAGNETICS T1/E1 Surface Mount Shielded Tranformers TM00140 • Operate at the T1 rate of 1.544 Mb/s and the E1 rate of 2.048 Mb/s Interwinding Electrostatic Shield provides low capacitance and high EMI suppression Minimum Interwinding Breakdown Voltage of 1500 Vrms • • 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 • • • • ELECTRICAL SPECIFICATIONS at 25° C DCR Ω max Turns Ratio ± 2% Part Number Pri : Sec Primary Inductance* mH min Leakage Inductance µH max Pri Interwinding Capacitance1 pF max Sec Non-Shielded Version 2771D 1 : 1.14CT 1.3 1.5 0.53 0.62 5 2795B 2771E 1 : 2CT 3.15 3.2 1.0 3.4 5 2795H * Measured at 10 kHz, 0.1 Vac 1. With shielded ground SCHEMATICS 2771D 2771E S 4 5 7 CT 6 1 2 Primary Secondary 8 ©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 T1-89 HIGH FREQUENCY MAGNETICS TM00140 T1/E1 Surface Mount Shielded Tranformers MECHANICAL 2771D 2771E 0.160 (11.68) 0.590 (14.99) MAX 87 65 0.120 (3.05) 0.495 0.430 (12.57)(10.92) MAX MAX 1234 TERMINAL 1 IDENTIFIER 0.395 (10.03) MAX 0.004 8 EDGES 0.23 (0.58) X 0.100 (2.54) FOOT (PHOSPHOR BRONZE, SOLDER COATED) 0.100 (2.54) TYP RECOMMENDED PCB PATTERN COMPONENT CENTER 0.255 (6.48) 0.120 (3.05) TYP 0.045 (1.14) TYP 0.008 (0.203) 2 PLACES 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 T1-90