ISDN MAGNETICS Global U Interface Transformer • • Meets the specifications for supplementary insulation per • EN60950 with a working voltage of 250 V • UL, CSA, BABT and VDE approved • TM00206 Operating temperature range is –40° C to +85° C Qualified per Bellcore TR-TSY-000357-1 Minimum interwinding breakdown voltage of 3000 Vrms ELECTRICAL SPECIFICATIONS at 25° C Part Number 2809B Turns Ratio ± 3% 1.50 : 1.0 Primary Inductance mH min 76 DCR Ω max Leakage Inductance µH max 180 Interwinding Capacitance pF max Pri Sec 15.2 11.3 250 SCHEMATIC Compatible Transceiver ICs 2809B Part Number 2809B IC Mfr IC Part Number Lucent T7234 T7237 T7256 T7264 10 1 9 4 2 6 5 Primary 7 Secondary ©2000 Bel Fuse Inc. Specifications subject to change without notice. 10.00 Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com T2-13 ISDN MAGNETICS Global U Interface Transformer TM00206 MECHANICAL 2809B 0.675 [17.14] max 0.187 [4.74] 0.150 [3.81] 0.975 [24.7] max 5 4 3 2 0.110 ± 0.01 [2.79 ± 0.25] 1 0.855 [21.71] max 6 7 8 9 10 0.725 [18.41] 0.023 [0.58] Sq. Note: Unless otherwise specified, dimensions are nominal and in inches [millimeters]. ©2000 Bel Fuse Inc. Specifications subject to change without notice. 10.00 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 T2-14