t1/e1/cept/isdn-pri interface modules dual surface mount transformer modules, 1500 vrms, extended temperature range rohs peak reflow temperature rating 245c optimized for enhanced emc performance extended temperature range dual smt package contains transformers with common mode chokes on both transmit and receive channels models matched to leading transceiver ics patented interlock base construction for high reliability ul1950 approved
weight . . . . . . . . . . . . . . .4.0 grams tape & reel . . . . . . . . . . . . 250/reel tube . . . . . . . . . . . . . . . . . . 30/tube mechanical schematic an www.pulseeng.com 1 t660.c (10/09) usa 858 674 8100 ? germany 49 7032 7806 0 ? singapore 65 6287 8998 ? shanghai 86 21 32181071 ? china 86 755 33966678 ? taiwan 886 3 4643715 electrical specifications @ 25c rohs compliant part number turns ratio 2 (pri:sec 2%) secondary ocl @ 25c (mh min) l l (h max) c w / w (pf max) dcr pri ( max) package/ schematic primary pins extended temperature range models 1 ? operating temperature -40c to +85c t1212nl 1ct:1ct & 1ct:2ct 1.20 .60 35 .90 an/1 1-3, 4-6 t1215nl 1ct:1.41ct & 1ct:1.41ct 1.20 .60 30 .70 an/1 1-3, 4-6 t1217nl 1ct:2.42ct & 1ct:2.42ct 1.20 .60 25 .60 an/1 1-3, 4-6 t1219nl 1ct:2.4ct & 1ct:1ct 1.20 .60 35 .90 an/1 1-3, 4-6 1. extended temperature range models ? for extended temperature range transformers (-40c to +85c operating temperature range), ocl (open circuit inductance) is specified at both -40c and +25c. at -40c, ocl is 600 h minimum. all other parameters are specified at +25c only. standa rd temperature range is 0c to +70c. 2. turns ratio is specified primary:secondary (ct = center tap). 3. standard packaging for the surface mount package is anti-static tubes. optional tape & reel packaging can be ordered by adding a ?t? suffix to th e part number, (i.e. t1212nlt). dimensions: inches. unless otherwise specified, all tolerances are .010 mm 0,25
www.pulseeng.com 2 t660.c (10/09) for more information: pulse worldwide headquarters 12220 world trade dr. san diego, ca 92128 u.s.a. www.pulseeng.com tel: 858 674 8100 fax: 858 674 8262 pulse europe einsteinstrasse 1 d-71083 herrenberg germany tel: 49 7032 7806 0 fax: 49 7032 7806 135 pulse china headquarters b402, shenzhen academy of aerospace technology bldg. 10th kejinan rd. high-tech zone nanshan district shenzen, pr china 518057 tel: 86 755 33966678 fax: 86 755 33966700 pulse north china room 2704/2705 super ocean finance ctr. 2067 yan an rd. west shanghai 200336 china tel: 86 21 62787060 fax: 86 2162786973 pulse south asia 135 joo seng rd. #03-02 pm industrial bldg. singapore 368363 tel: 65 6287 8998 fax: 65 6287 8998 pulse north asia 3f, no. 198 zhongyuan rd. zhongli city taoyuan county 320 taiwan r. o. c. tel: 886 3 4356768 fax: fre 886 3 4356820 pulse: 886 3 4356823 performance warranty of products offered on this data sheet is limited to the parameters specified. data is subject to change w ithout notice. other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. ? copyright, 2009. pulse engineering, inc. all rights reserved. 1. et product ? all coils have an et product of 10 v-sec minimum. 2. flammability ? materials used in these products are recognized as ul94-vo approved. products meet the requirements of iec 695-2-2 (needle flame test). 3. balance characteristics ? the transformers meet the requirements for longitudinal balance of fcc part 68. 4. common mode rejection ratio ? the cmrr for all transformers is better than 50 db at 1 mhz. 5. crosstalk attenuation ? in the packages which contain transmit and receive transformers side by side, sufficient crosstalk attenuation is achieved by the inherent characteristics of the toroid cores as well as by their proper positioning. the crosstalk attenuation is typically 65 db or better. 6. return loss ? itu-t g.703 and the european national regulatory documents specify minimum return loss levels. the transformers will allow these limits to be complied within the situations where they are applicable. frequency 50-100 khz 100 khz-2 mhz 2-3 mh z return loss xmit 9 db 15 db 11 db rcv 12 db 18 db 14 db 7. surge voltage capability ? all transformers and chokes meet surge voltage tests according to the most stringent regulatory documents, when used with the proper voltage and current suppression devices: metallic voltage: 800 v peak, 10/560 sec longitudinal voltage: 2,400 v peak, 10/700 sec 8. isolation voltage ? 100% of transformers are tested during production to the specified isolation voltage level. 9. general information ? the transformers are specifically designed for use in 1.544 mbps (t1), 2.048 mbps (cept) and isdn primary rate interface (pri) applications. they are matched to the majority of the line interface transceiver ics currently available. use of the proper transformer allows the interface circuit to comply with itu-t g.703 and other standards regarding pulse waveform, return loss, and balance. 10. transformer selection guide ? please contact pulse application engineering or see our website for the latest pulse transformer selection guide. application notes t1/e1/cept/isdn-pri interface modules dual surface mount transformer modules, 1500 vrms, extended temperature range
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