defining a degree of excellence SURFACE MOUNT T1 CARRIER INTERFACE TRANSFORMERS T1/CEPT Telecom Line Interface Applications TM0008 * High Pot 2000 Vrms measured for one minute. Bel offers a new cost effective package on our standard T1/CEPT Telecom Interface Line Transformers. This sixteen lead, “TopperTM”, surface mount package, provides a superior, cost effective, quality product. * Primary Inductance (OCL) is 1.20 Milihenries minimum. * Primary DCR is 0.80 ohms maximum. ELECTRICALS @ 25O C Leakage Inductance LL (µH) Max Coupling Capacitance (pF) Max S553-0013-04 35 1:1.7/1:2CT 0.80/1.80 0.50/0.80 S553-0013-05 1:1/1:1.25/1:2CT 0.50/0.50/0.80 0.80/1.10/1.80 50 Turns ratio of S553-0013-05 ia (1-2):(16-14)/(1-3):(16-14)/(5-8):(9-11) Turns Ratio T1/T2 Part Number DCR (ohms) Max Schematic A B * Coupling Capacitance (Cww) is 35 PicoFarads maximum. * Custom designs available. SCHEMATICS Secondary Primary 14 16 1 11 3 10 6 Secondary 9 A 8 Primary 16 1 3 11 10 6 Secondary Primary MECHANICALS 2 Secondary 14 9 B 8 Primary The Bel Surface Mount "TopperTM" package offers an industry standard package size and pin-out at an aggressive price. Dimensions are in inches(mm). Dimension Tolerance is +/- 0.02(0.51) unless otherwise specified. Package Style SMT 0.485(12.32) Max Top View bel Date Code Part Number 0.018(0.45) +/- 0.002(0.05) 0.375(9.53) 0.350(8.89) 0.285(7.24) Max 0.215(5.46) Max 0.015(0.38) 0.004(0.10) 0.05(1.27)Typ. Corporate Office Bel Fuse Inc. 198 Van Vorst Street, Jersey City, NJ 07302-4496 Tel: 201-432-0463 Fax: 201-432-9542 E-Mail: [email protected] Internet: http://www.belfuse.com Far East Office Bel Fuse Ltd. 8F/8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel: 852-2328-5515 Fax: 852-2352-3706 0.012(0.31) 0.008(0.20) 0.350(8.89) +/0.005(0.13) 4o Nom 0.025(0.64) 0.015(0.38) European Office Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Preston PR1 8UD Lancashire, U.K. Tel: 44-1772-556601 Fax: 44-1772-888366 T108