HIGH FREQUENCY MAGNETICS Specialty Through Hole Shielded Transformer • Operates as a high frequency pulse transformer in telecom switching systems at various signaling rates • Interwinding Electrostatic Shield provides low capacitance and high EMI suppression • TM00103 • 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 equivalents: 2664A and 2779D ELECTRICAL SPECIFICATIONS AT 25° C Turns Ratio ±2% Secondary Inductance1 µH Min (5-2) : (4-1) Pri : Sec (4-1) (5-2) (4-1) 1:2 1.58 2.05 3.30 Part Number 2741L2 DCR Ω max Secondary Leakage1 Inductance µH (4-1) 8.5 max 6.5 min Interwinding & Winding Shield Capacitance pF max (4-1) : 62 (4-1) : (5-2)3 12 3 Minimum Interwinding Breakdown Voltage Vrms 500 1.measured at 100 kHz, 0.05 Vac 2. with (5-2) grounded 3. with 6 grounded SCHEMATIC 2741L2 S 5 4 2 1 6 1:2 ©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 T1-7 HIGH FREQUENCY MAGNETICS Specialty Through Hole Shielded Transformer TM00103 MECHANICAL 2741L2 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 T1-8