derating cur ve introduction dimensions (mm) specifications performance characteristics par t number example features metal film resistors are designed to provide mil performance and reliability at a significantly lower cost. high grade materials make the much smaller space saver size available. automated production assures uniform quality and low cost. ?t emperature coefficients: 25, 50, & 100ppm (1/4 watt standard is 50ppm) ?t olerance 1%, 0.5%, & 0.1% ?din style 44061 fi lm r e s is to r s m r s er ie s: m et al fi lm test items mil spec din spec spec 10509 44061 mr12 mr25 mr25m mr50 mr50m mr100 mr200 rated wattage at 70c w char (d) .16 .25 .25 .5 .5 1 2 at 125c w char (d) .1 .125 .125 .4 .4 .75 1 max rated voltage vdc or vrms 200 250 200 350 350 500 750 thermic resistance k/w 150 150 200 100 140 100 100 temperature resistance % 0.25 0.25 0.20 0.20 0.30 0.20 0.20 0.20 0.20 low temp. operation % 0.25 0.25 0.15 0.15 0.30 0.15 0.15 0.15 0.15 short time overload % 0.25 -0.20 0.20 0.25 0.25 0.25 0.25 0.25 terminal s trength % 0.20 0.5 -0.10 0.10 0.10 0.10 0.10 0.10 0.10 dielectric with standing volt age % 0.25 -0.10 0.10 0.15 0.10 0.10 0.10 0.10 resistance to soldering: heat % 0.10 0.25 -0.01 0.10 0.10 0.10 0.10 0.10 0.10 insulation resistance - dry m 10000 10000 10000 10000 10000 10000 10000 10000 insulation resistance - wet m 100 100 100 100 100 100 100 100 moisture resistance % 0.50 1.0 0.40 0.50 0.50 0.50 0.50 0.50 0.50 life 1000 hrs % 0.50 0.50 1.0 0.10 1.0 1.0 1.0 1.0 shock, medium impact % 0.25 0.25 0.10 0.10 0.10 0.10 0.10 0.10 0.10 vibration, high freq. % 0.25 0.25 0.10 0.10 0.10 0.10 0.10 0.10 0.10 shelf-life, per year % 0.10 0.10 0.10 0.10 0.10 0.10 0.10 solderability % area 95 95 95 95 95 95 95 95 mr 25 r - 100k - f (1/4 watt is standard 50ppm so no suffix is needed for 50ppm or 100ppm) c2cb03 rev 2009.1.29 mr 25 r - 100k - b25 b25 indicates b tolerances (0.1%), 25ppm temperature coefficient par t number example (with specified t emperature coefficient) 70c r a t e d l o a d ( % ) am bie nt t em per atu re ( c) 155 c -55 -30 0 20 40 60 80 100 125 140 160 100 80 60 20 40 0 notes: ?flame-proof (mrf) available on request. meets ml1412 ?lower and higher resistances available on request.?tolerances below 1% require extra lead-time for proper aging. ?special tape to tape size by request. type mil style mr25m mr12 mr25 mr50m mr50 mr100 mr200 rn50 rn55 rn60 rn65 rn70 rated power (w) 1/16 1/8 1/3 1 3/4 125c 70c 1 2 11 16 h body(mm) lead(mm) 20 20 20 20 20 20 20 1/8 1/4 1/4 1/2 1/2 3.8 6.5 3.6 9.5 6.3 1.5 2.5 1.6 3.5 2.5 4.5 5 0.45 0.6 0.5 0.7 0.6 0.8 0.8 resistance range ( w ) 10-1m 10-1m 1-10m 10-2.4m 5.11-4.7m 5.11-2.4m 5.11-5.1 1m 200 200 350 250 350 500 750 400 500 400 700 700 1000 1000 standard tape max. working voltage max. overload voltage packing t52 t52 t52 t52 t52 t73 t73 5000 5000 5000 2500 2500 2000 1000 l0.3 d0.3 d0.05 r f e i n t e r n a t i o n a l ? t e l : ( 9 4 9 ) 8 3 3 - 1 9 8 8 ? f a x : ( 9 4 9 ) 8 3 3 - 1 7 8 8 ? e - m a i l s a l e s @ r f e i n c . c o m r o h s
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