HIGH FREQUENCY MAGNETICS Specialty Through Hole Shielded Transformer • TM00104 Operates as high frequency pulse transformer or as high frequency analog transformer in various telecom circuits requiring high voltage-step-up ratio • Operating Temperature Range: -40° C to +85° C • Meets IEC 695, 2-2 flammability requirements • Interwinding Electrostatic Shield provides low capacitance and high EMI suppression • PWB Process Capability: Standard Printed Wiring Board assembly techniques, total-immersion cleaning • Minimum Interwinding Breakdown Voltage of 500 Vrms • Reliability testing: Shock, vibration, temperature cycling, temperature - humidity - bias ELECTRICAL SPECIFICATIONS AT 25° C Turns Ratio ±2% Secondary Inductance1 µH Min Secondary Leakage Inductance1 µH max DCR Ω max Part Number 2741N2 Interwinding & Intershield Capacitance Inductance Unbalance % max (4-8) : (5-7) (4-8) : (3-1) (3-1) (4-8) (3-1) (3-1) pF max2 pF max3 pF max4 (3-2)(2-1) 1 : 3.0 1 : 3.17 660 0.78 2.4 3.0 4 15 20 0.2 1. measured at 100 kHz, 0.03 Vac 2. between (3-1) and (4-8) with 6 grounded 3. between (3-1) and 6 with (4-8) grounded 4. between (4-8) and 6 with (3-1) grounded SCHEMATIC 2741N2 4 S 3 5 2 7 8 6 1 : 3.0 1 : 3.17 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 T1-9 HIGH FREQUENCY MAGNETICS Specialty Through Hole Shielded Transformer TM00104 MECHANICAL 2741N2 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 T1-10