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| sm74139 - t1/cept/isdn-pri dual transformer features surface mount dual transformer for transmit and receive 1500 vac hipot lead free version available (see how to order) lead free versions are rohs compliant* applications telecom electrical specifications @ 25 c primary pins core a ............................................1-3 core b ............................................6-8 ratio (? %) core a & b ......................1ct : 1.15ct ocl (mh) min. core a & b ......................................1.2 leakage inductance (?) max. core a & b ....................................0.60 cww (pf) max. core a & b ........................................30 dcr of primary ( ? ) max. core a & b ....................................0.70 dcr of secondary ( ? ) max. core a & b ....................................0.75 operating temperature (?) ........0 to +70 *ct : center tap product dimensions sm74139 (datecode) 12.82 (.505) 16 9 18 max. 7.11 (.280) max. 9.52 (.375) max. 1.27 (.050) .457 .05 (.018 .002) typ. dimensions are: mm (inches) tolerance: 0.254 (.010) electrical schematic 1 core a core b 2 3 6 7 8 11 10 9 16 15 14 packaging specifications tape & reel* ........................700 pcs./reel *??suffix at end of part number designates tape & reel packaging, e.g. sm74139e. 6.22 (.245) max. 1.01 (.040) sm74139 yyww *rohs directive 2002/95/ec jan 27 2003 including annex specifications are subject to change without notice. customers should verify actual device performance in their specific applications. 03/05 *rohs compliant versions available how to order sm74139e __ model termination blank = tin-lead l = tin only (lead free)
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