irc advanced film division general note irc reserves the right to make changes in product specification without notice or liability . all information is subject to ircs own data and is considered accurate at time of going to print. a subsidiary of tt electronics plc ? corpus christi texas 78411 usa ? irc advanced film division telephone: 361 992 7900 ? facsimile: 361 992 3377 ? email: afdsales@irctt.com ? website: www.irctt.com to220 series issue january 2006 0.01 ? 5% 0541 to-220 power resistor ? to-220 housing ? low inductance (<50nh) ? available in 20w or 30w ? resistance from 0.01 to 51k ? ? high stability ?lm resistance elements electrical data ircs to-220 power ?lm resistors satisfy demanding applications for accurate and stable power resistors housed in the convenient to-220 case. the resistance element is isolated from the mounting tab by an alumina ceramic layer, providing very low thermal resistance and ensuring high insulation resistance between terminals and tab. the non-inductive design makes these products especially useful in high frequency and high speed pulse applications. type power rating 4, 5 thermal resistance resistance range 3 tolerances temperature coef?cient heat - sink 1 free air 2 min max to222-30 30w 1w 2.3c/w 0.1 ? 220 ? 1% 100ppm/c 0.01 ? 220 ? 5% 250ppm/c 30w 1w 2.3c/w 220 ? 51k ? 1%, 5% 100ppm/c to220-20 20w 1w 3.3c/w 0.1 ? 220 ? 1% 100ppm/c 0.01 ? 220 ? 5% 250ppm/c 20w 1w 3.3c/w 220 ? 51k ? 1%, 5% 100ppm/c 1 power rating based on 25c flange temperature. 2 power rating based on 25c ambient temperature. 3 consult factory for higher or lower values. 4 max current 25 amps 5 max voltage 500v or p x r t0220 series
to220 series issue january 2006 irc advanced film division ? corpus christi texas 78411 usa ? irc advanced film division telephone: 361 992 7900 ? facsimile: 361 992 3377 ? email: afdsales@irctt.com ? website: www.irctt.com irc advanced film division to-220 power resistor physical data b1 e b l r p e h q a f c l note: dimension c apply f or tin plate finish. ? (5x) d j c pos inches millimeters min max min max a 0.160 0.190 4.06 4.83 b 0.025 0.040 0.63 1.02 c 0.015 0.022 0.38 0.56 d 0.560 0.590 14.22 14.99 e 0.385 0.415 9.78 10.54 e 0.190 0.210 4.83 5.33 f 0.045 0.055 1.14 1.40 h 0.234 0.258 5.94 6.55 j 0.090 0.115 2.28 2.92 ? p 0.146 0.156 3.71 3.96 q 0.103 0.113 2.62 2.87 l 0.540 0.560 13.72 14.22 lead material tinned copper 3 7 3 7 substrate material 96% alumina ceramic b1 0.045 0.060 1.14 1.52 resistor construction proprietary ?lm conductors and proprietary alloy resistors r 0.243 ref 6.17 ref
to220 series issue january 2006 irc advanced film division ? corpus christi texas 78411 usa ? irc advanced film division telephone: 361 992 7900 ? facsimile: 361 992 3377 ? email: afdsales@irctt.com ? website: www.irctt.com irc advanced film division to-220 power resistor test max ? r thermal shock mil-std-202 method 107 cond. f 0.30% +0.5m ? thermal strength mil-std-202 method 211 cond. a (5165) 0.20% +0.5m ? short-time overload 5 sec 2xrated power 0.30% +0.5m ? moisture resistance mil-std-202 method 106 1.0% +0.5m ? mechanical shock method mil-std-202 method 213 cond. i 0.25% +0.5m ? vibration mil-std-202 method 204 cond. d 0.25% +0.5m ? load life mil-std-202 method 108 1,000 hours 1.00% +0.5m ? resistance to solder heat mil-std-202 method 210f cond. b 0.25% +0.5m ? environmental power derating curve for additional information or to discuss your specific requirements, please contact our applications team using the contact details below. ordering data pre?x tfp - to220 - 30 - 1r50 - j - 100 style power 20 = 20 watts 30 = 30 watts resistance code 4-digit resistance code. ex: 10r0 = 10 ? , 1001 = 1k ? absolute tolerance code j = 5%; f = 1% absolute tcr 100ppm/c; 250ppm/c 25 7 0 150 10 0 50 10
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