professional type miniature style series mfo the mfo series are manufactured by high vacuum sputtering deposit metal film on hig h thermal conductivity and specific gravity rosenthal ceramic or same grade rods. th e resistors are coated with multilayers of blue coloured laque r . introduction features ? di n 44061, 45921 part 107 ? c e c c 40101-039, 40101-10 7 ? m i l 10509 f ( cha r . d & c ) ? resis t ance t olerance : 1 % ? t .c. r 50pp m / o c derating curve : 2 0 4 0 6 0 8 0 10 0 2 0 4 0 6 0 8 0 10 0 12 0 14 0 16 0 18 0 70 c 15 0 5 0 10 0 15 0 20 0 0 2 5 5 0 7 5 10 0 measuring positio n hot- s pot t emperature : mf020 7 mf020 4 dimension s h 0. 4 1. 8 0. 3 282. 0 0. 5 0.0 5 m f 020 7 6. 3 0. 5 2. 3 0. 3 282. 0 0. 6 0.0 5 unit :m m s ty l e norma l l o d h o d o d o d l dimensions : m f 020 4 3. 3 sales@vtm.co.uk :: tel: +44 (0) 1494 738 600
technical specifications series mfo electrical characteristics power rating @ 70 % 0.4 w 0.6 w operation t emperature rang e -5 5 o c to +55 o c maximum w or k ing v ol t ag e 200 v 300 v maximum overload v ol t ag e 400 v 600 v dielectric withs t anding v ol t ag e 300 v 500 v v alue range 1 % 10 ? ~ 1m ? t emperature coe f ficien t 50ppm/ o c * standard resistance is 10?1?, belo w or over thi s re s i s tance on reque s t . styl e mf 020 4 mf 020 7 environmental characteristics * rated continuous working voltage (rcwv) = power rating x resis t ance v alue performance t es t t est metho d apprais e short time overloa d jis-c-5202 5. 5 2.5 times rcwv for 5 second s (0.25% + 0.05 ? ) dielectric withs t and v oltag e jis-c-5202 5. 7 in v -block for 60 second s by t ype t emp. coe f ficient of resis t anc e jis-c-5202 5.2 -55c~+155 c 50ppm / o c insulation resistanc e jis-c-5202 5. 6 in v -block >10000 m ? solderabilit y jis-c-5202 6. 5 235c for 50.5 second s 95% min. coverage resistance to solven t jis-c-5202 6. 9 trichroethane for 1 min. with ultrasoni c no deterioration of coatings and marking s t erminal s trengt h direct load for 10 sec. in the direction of the t erminal leads. 2.5kg (24.5n) pulse overloa d jis-c-5202 5. 8 4 times rcwv 10000 cycles.( 1sec on, 25 secs off ) (2%+0.05 ? ) load life in humidit y jis-c-5202 7. 9 402c, 90~95% rh at rcwv for 1000hrs . (1.5%+0.05 ? ) (1 . 5 hrs on , 0 . 5 hrs o ff.) load li f e jis-c-5202 7.1 0 70c at rcwv for 1000hrs (1.5 hrs on, 0.5 hrs off ) (1.5%+0.05 ? ) t emperature cycling jis-c-5202 7.4 -55 c room t emp . 155 c room t emp . (0.25%+0.0 5 ? ) for 5 cycle s re s i st an c e t o s olde r ing hea t jis-c-5202 6. 4 350c10c for 30.5 second s (0.25%+0.05 ? ) sales@vtm.co.uk :: tel: +44 (0) 1494 738 600
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