2809B

ISDN MAGNETICS Global U Interface Transformer TM00206 • • Meets the specifications for supplementary insulation per • EN60950 with a working voltage of 250 V • UL, CSA, BABT and VDE approved • 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 DCR Ω max Part Number Turns Ratio ± 3% Primary Inductance mH min Leakage Inductance µH max Pri Interwinding Capacitance pF max Sec 2809B 1.50 : 1.0 76 180 15.2 11.3 250 SCHEMATIC Compatible Transceiver ICs Part Number IC Mfr IC Part Number 2809B 1 10 9 2809B Lucent T7234 T7237 T7256 T7264 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 TM00206 Global U Interface Transformer MECHANICAL 2809B 0.675 [17.14] max 0.187 [4.74] 0.150 [3.81] 0.975 [24.7] max 5 4 3 2 1 0.110 ± 0.01 [2.79 ± 0.25] 0.855 [21.71] max 0.725 [18.41] 6 7 8 9 10 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 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 T2-14