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| HIGH FREQUENCY MAGNETICS T1/E1 Miniature Surface Mount Tranformers * Meet pulse template and return loss requirements of T1/E1 interface circuits Minimum interwinding breakdown voltage of 1500 Vrms Maximum inductance unbalance of center-tapped windings is 0.2% * * * * 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 TM00142 * * ELECTRICAL SPECIFICATIONS at 25 C Turns Ratio 1% DCR max (4 - 6) 1.5 1.4 1.6 1.2 1.3 2.5 0.85 0.7 0.8 0.65 0.8 0.8 1.6 1.5 2.2 1.4 1.9 4.3 (3 - 1) 1.7 1.7 2.6 1.8 2.6 2.2 35 35 35 35 35 40 Part Number Primary Inductance1 mH min Leakage Inductance2 H max Interwinding Capacitance pF typ Surge Voltage Capability3 Pri : Sec 2795R 2795D 2795B 2795P 2795C 2795AB 1 : 1CT 1 : 1.08CT 1 :1.14CT 1 : 1.26CT 1 : 1.35CT 1CT: 2 Metallic 3000 3000 2500 3000 2500 2500 Longitudinal 2500 2500 2500 2500 2500 2500 1. Measured at 10 kHz, 0.1 Vac 2. measured at 100 kHz, 0.1 Vac 3. See Supplementary Information SCHEMATICS 2795B 2795C 2795D 2795P 2795R 2795AB 4 3 5 CT 2 3 CT 5 1 Primary 4 6 Secondary 6 Primary 1 Secondary (c)2000 Bel Fuse Inc. Specifications subject to change without notice. 04.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com T1-93 HIGH FREQUENCY MAGNETICS TM00142 T1/E1 Miniature Surface Mount Tranformers 2795AB 2795B 2795C 2795D 2795P 2795R MECHANICAL 0.240 [6.10] max 6 5 4 A 0.265 [6.73] ref 0.350 [8.90] max 0.186 [4.72] 0.073 [1.85] 0.040 [1.02] 0.065 [1.65] 0.057 [1.45] A Terminal 1 ID 1 0.020 [0.51] 2 3 0.073 [1.85] 0.364 0.234 [9.25] [5.95] No metallization or solder mask in cross-hatched designated area 0.265 [6.73] max 0.055 [1.40] 0/8 0.033 [0.84] Suggested PCB Pad Layout Note: Unless otherwise specified, dimensions are nominal and in inches [millimeters]. 0.015 [0.40] R 0.023 [0.60] Supplementary Information Safety Agency Compatibility Surge Voltage Capability Flammability Compliance Simulation Model Surface-Mount Packaging Terminal Lead Coplanarity PWB Process Capability Underwriters Laboratories, Inc. UL 1950 10/700 s; 10 repetitions of alternating polarity, generator output: peak voltage, 25 source IEC-695, 2-2 (needle flame test), materials are UL 94 VO approved SPICE computer simulation file available on request Tape and Reel; 16 mm wide by 12 mm pitch; 13 inch OD; 4 inch ID 650 transformers per reel, maximum Meets ANSI/EIA 481-2 Carrier Tape Standards--JEDEC SO package 0.004 inch [0.10 mm] Machine placement (recommendation: locate by terminals, not body) (c)2000 Bel Fuse Inc. Specifications subject to change without notice. 04.00 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 T1-94 |
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