ADSL Transformer Schematic Diagram Turns Ratio Pri. to Sec. 1 : 1 + 2% 1 10 µH 3 8 5.0 µH 2 9 DC Resistance 1-4, (short 3-2) 0.8 Ω 4 7 DC Resistance10-7, (short 8-9) 0.6 Ω Parameter Min. Inductance 423 Max. Units 486 Leakage Inductance Hi-PotPrimary to Secondary Typ. 2000 VRMS @10kHz- 0.1V 1-4 (2-3 shorted). Tested to IEC 68-2-14:1984 Nb *Pins 10 - 7 (short 8&9) to 1 - 4 (short 2&3) Primary = Line Side Secondary = Chip Side. Designed for use with Alcatel MTK-20140\20131 Designed to meet UL 1950 supplementary insulation with a working voltage of 250. Materials used in construction of this component meet or exceed UL Class B and can be operated up to 130 oC Dimensions in Inches (mm) .522 (13.26) MAX. .532 (13.51) MAX. .516 (13.1) MAX. .715 (18.15) 6 5 4 .100 (2.54) .028 (0.70) .025 (0.64) .516 (13.1) Suggested Pad Layout 3 .675 (17.15) .663 (16.85) 2 1 7 8 9 .100 (2.54) TYP. .100 (2.54) TYP. .050 (1.27) TYP. 10 RHOMBUS P/N: T-1287G CUST P/N: DATE: 8/22/00 Rhombus Industries Inc. Transformers & Magnetic Products NAME: SHEET: 15801 Chemical Lane, Huntington Beach, CA 92649 Phone: (714) 898-0960 www.rhombus-ind.com FAX: (714) 896-0971