etaldoc 40/4 page 1 of 4 january 2004 product data sheet adsl transformer P3911 features applications ? lead-free (pb-free) ? virata cpe ? low distortion ? adsl over pots ? iec 950 and ul 60950 certified ? ul recognized component ? supplementary insulation ? surface mount ? industry standard footprint description P3911 is designed for customer premises adsl over pots applications using the virata beryllium and boron chipsets. P3911 is certified to safety standards iec 950 and ul 60950 for supplementary insulation, 250v working voltage. P3911 is a ul recognized component and is supported by an iec cb test certificate. the part is completely lead-free and suitable for lead-free and conventional processing. the safety system yields very low transformer parasitics, ensuring that P3911 exhibits excellent frequency response and balance; in combination with its good harmonic distortion performance, P3911 is ideally suited to low cost yet demanding adsl applications.
P3911 etaldoc 40/4 page 2 of 4 january 2004 specifications electrical typical values at t = 25oc, unless otherwise stated. parameter conditions min typ max units inductance 10khz 100mv 2-5 (link 3-4) 540 600 660 h leakage inductance 100khz, 100mv pins 2-5 (link 3-4; link 6, 7, 8, 9) - - 6 h interwinding capacitance 100khz 100mv 2-9 (link 2, 3, 4, 5; link 6, 7, 8, 9) - - 30 pf dc resistance 2-3; 4-5 6-7; 8-9 - - - - 0.4 0.9 ? ? turns ratio 9-8 : 2-3 7-6 : 4-5 1.17 1.19 1.21 - voltage isolation (1) 50hz dc (2, 3, 4, 5 : 6, 7, 8, 9) 2.12 3.0 - - - - kvrms kv operating range: functional storage ambient temperature -40 -40 - - +85 +85 oc oc notes 1. components are 100% tested at 3.25kv dc.
P3911 etaldoc 40/4 page 3 of 4 january 2004 construction dimensions shown are in millimetres (inches). safety absolute maximum ratings (ratings of components independent of circuit). short term isolation voltage (1s) 2.12kvrms, 3.0kvdc storage temperature -40oc to +85oc constructed in accordance with iec 60950-1, en 60950-1 and ul 60950-1, supplementary insulation, 250v maximum working voltage, flammability class v-0. installation requirements should be observed whereby a minimum of 1.0mm creepage and 1.5mm clearance is maintained between the ferrite core and accessible conductive parts in the host equipment. reflow temperature (10s) 260oc 0.80 (0.032) 0.70 (0.028) 15.40 (0.606) 2,50 (0.098) connections fig . 2 17.15 max (0.67) 12.9 max (0.51) 12.2 max (0.48) 13.0 (0.51) 0.7 (0 .0 3 ) 2,5 (0.1 0) chamfer on bobbin dimensions fig . 1 t erminals finished: snag
P3911 etaldoc 40/4 page 4 of 4 january 2004 certification copyright certified by bsi to iec 950:1991/a4:1996 (iec cb test certificate no. gb518w) sub-clauses 1.5, 1.5.1, 1.5.3, 2.2, 2.2.2, 2. 2.3, 2.2.4, 2.9.2, 2.9.3, 2.9.4, 4.4, 4.4.3.2 (class v-0) and 5.3 for a maximum working voltage of 250vrms, nominal mains supply voltage not exceeding 300vrms and a maximum operating temperature of +85oc in pollution degree 2 environments, supplementary insulation, clearance greater than 2.0mm, creepage greater than 2.5mm, distance through solid insulation greater than 0.4mm. recognized under the component recognition program of underwriters laboratories inc. to us and canadian requirements can/csa c22.2 no. 60950-1-03/ul60950-1, first edition, based on iec 60950-1, first edition, maximum working voltage 250vrms, pollution degree 2, supplementary insulation. ul file number e203175 additionally, profec technologies certifies all transformers as providing voltage isolation of 2.12kvrms, 3kv dc minimum. all shipments are supported by a certificate of conformity to current applicable safety standards. etal and P3911 are trade marks of profec technologies ltd. the trade mark etal is registered at the uk trade marks registry. profec technologies ltd. is the owner of the design right under the copyright designs and patents act 1988 and no rights or licences are hereby granted or implied to any third party. ? 2000 ? 2004 profec technologies ltd. reproduction prohibited. etal group oy, kuormatie 14, fin-03101, nummela telephone: +358 (0)20 7500 330 fax: +358 (0)20 7500 333 website: www.etalgroup.com email: etalgroup@egruppen.com fm 25326 iso 9001 e203175
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