CEPT TEW5054 Matching Transformer TEW5054 is specifically designed to match a 120 Ω twisted pair to a 75 Ω coaxial line in the CEPT trunk. The Return Loss exceeds the requirements of CCITT G.703 and BS6328. The Longitudinal balance exceeds the requirements of: CCITT I.431. MECHANICAL 4 2 Top view White dot at pin 1 7 120 Ω bal. 75 Ω unbal. 12.2 2.54 (6 places) 1 6 10.7 0.6 9.1 es) Recommende foot print All dimensions 1.27 are in mm. 5.5 nded 27 ISSUE: B 95/03/01 TEW5054 ELECTRICAL SPECIFICATIONS 1.9 2.54 7.62 TEW5054 Line Impedance Pri. Sec. (2 - 6) (4 - 1) Turns ratio (2 - 6) : (4 - 1) Inductance (4 - 1) Pulse Mask 75 Ω 120 Ω unbalanced balanced 1 : 1.26 > 1.0 mH CEPT Longitudinal Bal. (CCITT I.431) > 40 dB 50 - 1544 KHz Return Loss (CCITT G.703) > 12 dB > 18 dB > 14 dB 50 - 100 KHz 100- 2048 KHz 2048 - 3072 KHz Dielectric Strength Filtran Limited 1500 Vrms 229 Colonnade Road, Nepean, Ontario, Canada. K2E 7K3, Tel: (613) 226-1626 Fax: (613) 226-7124 5-6