defining a degree of excellence T1/CEPT/ISDN-PRI TRANSFORMER S553-3855-02 TM0009 Bel introduces a new “pick and place” compatible, small footprint, surface mount impedance matching transformer for ISDN-PRI/T1/CEPT applications. * Pick and Place Compatible. * Small form factor to maximize board space. MECHANICALS SCHEMATIC 0.285(7.24) Max bel Date Code S553-3855-02 0.375(9.53)Max 0.350(8.89)Min Primary 16 Secondary 15 14 13 12 11 2 3 4 5 6 10 9 7 8 1 Top View 0.018(0.46) +/- 0.002" 0.50(12.70) Max 1 0.225(5.72) Max Secondary 0.015(0.38)MAX 0.004(0.10)MIN 0.35 (8.89) 4O Nom 0.012(0.30)Max 0.008(0.20)Min ELECTRICALS Primary 0.025(0.64)Max 0.015(0.38)Min Dimensions in inches (mm) Dimension tolerance +/- 0.01(0.25) unless otherwise stated @ 25o C Leakage DC Resistance Interwinding DC Primary Hipot Inductance DCR Sec Inductance L (mH) Max Capacitance Resistance Part (Vrms) (ohm) Max L Cww DCR Pri OCL (mH) Min Number Pins Pins Pins Pins Pins (ohm) Max Pins (pF) Max (16-14):(1-3) (6-8):(11-9) Min (16-14)* (6-8)** (1-3) (11-9) S553-3855-02 1:1.15CT 1CT:2CT 1.20 1500 0.6 0.8 0.70 30 1.00 0.70 Turns Ratio * Leakage Inductance is measured with Pins (1-3) shorted. ** Leakage Inductance is measured with Pins (11-9) shorted. 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 T109 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 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