ISDN U-BUS/DNIC Input/Output Transformer TEW6175 is designed and approved for Mitel MT8972 and MT8971B/72B devices. Applications: Features – Small size SMD & through hole – Low cost TEW6175 • Digital subscriber lines. • High speed data transmission over twisted wire. • Digital PABX line cards and telephone sets. MECHANICAL TOP VIEW DIMENSIONS ARE IN MM. 13.0 max 9.4 max 2 1 1.6 1 6 2 5 3 4 5 1.3 5.08 2.54 Line Device 3 0.7 8.6 13.5 TEW6175 Recommended foot print 8.7 max 4 6 TEW6175 10.7 10.2 ALL DIMENSIONS ARE IN MM 2.54 DIA O.65 8.7 6 5 4 DRILL 1.0 mm 6 PLACES 1 2 3 GRID 2.54 x 2.54 ISSUE: B 98/04/27 TEW6175.chp WHITE DOT TEW6175-1 ELECTRICAL SPECIFICATION Line Impedance TEW6175 TEW6175-1 135 Ω 135 Ω DCR (Ohms) (1 - 6) (2 - 5) (3 - 4) 3.1 0.9 0.9 3.1 0.9 0.9 Inductance (mH) (2 - 4) > 1.3 > 1.3 Leakage Ind. (µ H) (2 - 4) < 20 < 20 3.33 : 1 : 1 3.33 : 1 : 1 < 3 dB < 3 dB 1500 1500 Turns Ratio (1 - 6) : (2 - 5) : (3 - 4) Frequency response 10 - 500 KHz Dielectric Strength (Vrms) Filtran Limited 229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3, Tel : (613) 226-1626 Fax : (613) 226-7124 @ 30 mA DC 4-29