Features Applications Compact surface mount packaging Telecom Contains both transmit and receive transformer in a single package Isolation voltage: 1500 Vrms PT74344 - T1/CEPT/ISDN-PRI Transformer Electrical Specifications @ 25 C Turns Ratio 5 % ............................1:1.15CT & 1CT:2CT Primary Inductance (mH min.) ..........................................1.20 & 1.20 Primary Leakage Inductance (H max.) ..........................................0.60 & 0.60 Cww (pF max.) ............................30 & 30 Pri DCR ( max.) ....................0.70 & 0.70 Sec DCR ( max.) ..................0.70 & 1.00 Primary Pins ............................16-14, 6-8 Operating Temperature (C) ........0 to +70 *CT : center tap Packaging Specifications Tape and Reel* ....................700 pcs./reel Product Dimensions Electrical Schematic 1 16 2 PT74344 (DATE) 0.46 TYP. (.018) 12.83 MAX. (.505) 6.22 MAX. (.245) 0.38 TYP. (.015) 1.27 (.050) 3 14 6 11 7 10 8 9 8.89 (.350) 7.1 MAX. (.280) *"E" suffix at end of part number designates tape & reel packaging, e.g. PT74344E. .102 Coplanarity: (.004) 1.02 TYP. (.040) 9.15 0.25 (.360 .010) 8.89 (.350) 1.91 (.075) 1.27 (.050) 16X 8.38 (.330) 0.71 TYP. (.028) Recommended PAD layout DIMENSIONS ARE: MM (INCHES) TOLERANCE: 0.25 (.010) NOTE: DIMENSIONS ARE EXCLUSIVE OF SOLDER Reliable Electronic Solutions Asia-Pacific: TEL +886-2 25624117 FAX +886-2 25624116 Europe: TEL +41-41 7685555 FAX +41-41 7685510 N. America: TEL +1-909 781-5500 FAX +1-909 781-5700 www.bourns.com 04/03 COPYRIGHT(c) 2003, BOURNS, INC. LITHO IN U.S.A. e 04/03 /SP0207 Specifications are subject to change without notice.