? coilcraft, inc. 2006 specifications subject to change without notice. please check our website for latest information. base/gate driver transformers document 130 document 130 revised 10/26/06 ? lower cost than toroidal equivalents ? frequency range of 10 - 250 khz and up ? industry standard pin centers ? vde, iec, ul, csa compliant ? 3750 vrms isolation between windings ? constructed with ul approved class 130c insulation system (ul file e83628) SD250-1L sd250-2l sd250-3l sd250-4l turns ratio (pri : sec) 1 : 1 1 : 1.5 1 : 1 : 1 1 : 1.5 : 1.5 primary winding inductance (min) 1 1.5 mh 1.5 mh 1.5 mh 1.5 mh leakage inductance (max) 1 4.0 h 4.0 h 4.0 h 4.0 h dcr 0.4 0.4 0.4 0.4 volt-time product 375 v-sec 375 v-sec 375 v-sec 375 v-sec secondary winding(s) capacitance, pri to sec (max) 50 pf 50 pf 50 pf 50 pf dcr, each section (max) 0.75 2.5 0.75 2.5 1. measured at 1 vrms, 15.75 khz. 2. operating temperature range ?40c to +85c. 3. electrical specifications at 25c. 5 6 10 1 pri (drive) pri (drive) 5 1 sec 9 10 sec 2 6 7 sec 1 sd250-1 and 250-2 sd250-3 and 250-4 1.10 27,94 0.395 10,03 1.10 27,94 0.044 1,12 max max max 0.15 0.030 3,81 0,762 0.032 0,813 0.950 24,13 max dia ref dia pins 7 and 9 are not present on sd250-1 and sd250-2 15 6 7 9 10 0.62 0.015 15,75 0,38 0.75 19,05 recommended board layout 0.20 5,08 0.40 10,16 0.80 20,32 1 5 67 910 weight: 15.6 ? 16.8 g termination: tin-silver over tin over copper packaging: 49 per tray
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