ADSL MAGNETICS Transformer TM99AF • Designed for the Globespan’s low-power ADSL chip set • Operating temperature range of 0° C to +85° C • UL and CSA approved • Minimum interwinding breakdown voltage of 1500 Vrms ELECTRICALS at 25° C Turns Ratio ± 3% Inductance µH min Part Number 2808J TX : Line RX : Line TX 1:4 1 : 2.05 25.0 DCR Ω max Leakage Inductance* µH max 7.0 Interwinding Capacitance pF max Chip Line 1.60 2.40 30 * Measured at RX with line side shorted SCHEMATIC 1 8 3 6 TX 2 Line 7 RX 4 Chip 5 Line ©1999 Bel Fuse Inc. Specifications subject to change without notice. Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ADSL MAGNETICS Transformer TM99AF MECHANICAL 0.600 [15.24] 2808J 0.400 [10.16] 0.200 [5.08] 0.200 [ 5.08] ref 0.100 [2.54] 0.070 x 0.070 [1.78 x 1.78] Terminal foot 1.060 [26.92] max 0.102 [2.59] 1.060 [26.92] Terminal 1 Identifier 0.760 [19.30] max Suggested PCB Pad Layout 0.394 [10.00] max Terminal Pad 0.070 x 0.070 nom [1.78 x 1.78] 1 4 8 5 Note: Unless otherwise specified, dimensions are nominal and in inches [millimeters]. Tape and reel packaging: 200 parts/reel ©1999 Bel Fuse Inc. Specifications subject to change without notice. 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 F23, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com