lt o 1 0 0 www.vishay.com vishay sfernice revision: 02-apr-13 1 document number: 50051 for technical questions, contact: sfer@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 power resistor thick film technology lto series are the extension of rto types. we used the direct ceramic mounting design (no metal tab) of our rch power resistors applied to semiconductor packages. features ? 100 w at 25 c case temperature heatsink mounted ? direct mounting ceramic on heatsink ? broad resistance range: 0.015 ? to 1 m ? ? non inductive ? to-247 package: compact and easy to mount ? material categorization: for definitions of compliance please see www.vishay.com/doc?99912 note ? tolerances unless stated: 0.3 mm dimensions in millimeters standard electrical specifications model size resistance range ? rated power p 25 c w limiting element voltage u l v tolerance % temperature coefficient ppm/c critical resistance ? lto 100 to-247 0.015 to 1 m 100 500 1, 2, 5, 10 150, 250, 700, 900 2.5 k 5.0 20.7 15.76 2.4 10.16 0.6 3.5 3.6 1.5 14.5 ? 3.6 5.33 mechanical specifications mechanical protection molded resistive element thick film substrate alumina connections tinned copper weight 3.5 g max. mounting torqure 1 nm environmental specifications temperature range - 55 c to + 175 c climatic category 55/175/56 flammability iec 60695-11-5 2 applications 30 s separated by 60 s technical specifications dissipation and associated onto a heatsink power rating and ? thermal resistance ? of the component 100 w at + 25 c (case temp.) r th (j - c) : 1.5 c/w free air: 2.25 w at + 25 c temperature coefficient see performance table standard 150 ppm/c dielectric strength ? mil std 202 1500 v rms - 1 min 10 ma max. insulation resistance ? 10 4 m ? inductance ? 0.1 h
lt o 1 0 0 www.vishay.com vishay sfernice revision: 02-apr-13 2 document number: 50051 for technical questions, contact: sfer@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 choice of the heatsink the user must choose according to the working condit ions of the component (pow er, room temperature). ? maximum working temperature must not exceed 175 c. the dissipated power is simply calculated by the following ratio: p: expressed in w ? ? t: difference between maximum working temperature and room temperature ? r th (j - c) : thermal resistance value measured between resistive layer and ou ter side of the resistor. it is the thermal resistance of the ? component. ? r th (c - h) : thermal resistance value measured between outer side of the resi stor and upper side of the heat sink. this is the thermal resis tance ? of the interface (grease, thermal pad), and the quality of the fastening device. ? r th (h - a) : thermal resistance of the heatsink. example: ? r th (c - h) + r th (h - a) for lto 100 power rating 10 w at ambient temperature + 25 c ? thermal resistance r th (j - c) : 1.5 c/w ? considering equation (1) we have: ? t = 175 c - 25 c = 150 c ? r th (j - c) + r th (c - h) + r th (h - a) = = = 15 c/w ? r th (c - h) + r th (h - a) = 15 c/w - 1.5 c/w = 13.5 c/w with a thermal grease r th (c - h) = 1 c/w, we need a heatsink with r th (h - a) = 12.5 c/w. performance tests conditions requirements momentary overload en 60115-1 1.5 pr/5 s u s < 1.5 u l (0.5 % + 0.005 ? ) load life en 60115-1 1000 h pr at + 25 c (1 % + 0.005 ? ) high temperature exposure aec-q200 rev d conditions: mil-std-202 method 108 1000 h, + 175 c, unpowered (0.25 % + 0.005 ? ) temperature cycling aec-q200 rev d conditions: pre-conditioning 3 reflows according jestd020d for r < 10 ?? 500 cycles - 55 c/+ 125 c for r ? 10 ? 1000 cycles - 55 c/+ 125 c dwell time - 15 min (0.5 % + 0.005 ? ) biased humidity aec-q200 rev d conditions: mil-std-202 method 103 1000 h, 85 c, 85 % rh (1 % +0.005 ? ) operational life aec-q200 rev d conditions: pre-conditioning 3 reflows according jestd020d mil-std-202 method 108 1000 h, 90/30, powered, + 125 c (1 % +0.005 ? ) esd human body model aec-q200 rev d conditions: aec-q200-002 25 kv ad (0.5 % +0.005 ? ) vibration aec-q200 rev d conditions: mil-std-202 method 204 5 g s for 20 min, 12 cycles test from 10 hz to 2000 hz (0.5 % +0.005 ? ) mechanical shock aec-q200 rev d conditions: mil-std-202 method 213 100 g s, 6 ms, 3.75 m/s 3 shocks/direction (0.5 % +0.005 ? ) terminal strength aec-q200 rev d conditions: aec-q200-006 2 kgf, 60 sec (0.25 % +0.01 ? ) special features resistance values ? 0.015 ? 0.1 > 20 tolerances 1 % at 10 % typical temperature coefficient ? (- 55 to + 175 c) 900 ppm/c 350 ppm/c 150 ppm/c p = ? t r th (j - c) ?? r th (c - h) ?? r th (h - a) ?? ++ ---------------------------------------------------------------------------------- - 1 ?? ? t p ------- 150 10 ---------- -
lt o 1 0 0 www.vishay.com vishay sfernice revision: 02-apr-13 3 document number: 50051 for technical questions, contact: sfer@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 overloads in any case the applied volt age must be lower than the maximum overload voltage of 750 v. ? the values indicated on the graph below are applicable to resistors in air or mounted onto a heatsink. energy curve power curve power rating the temperature of th e case should be maintained within the limits specified. ? to improve the thermal conductivity, surfaces in contact should be coated with a silicone grease and the torque applied on the screw for tighte ning should be around 1 nm. marking model, style, resistance value (in ? ), tolerance (in %), manufacturing date, vishay sfernice trademark. 0.01 0.1 1 10 100 ener g y in joule s overload duration in s 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 100 1000 10 000 100 000 1 000 000 power in w overload duration in s 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 10 -1 10 0 packaging tube of 30 units 0 20 40 60 80 100 120 140 160 175 100 125 75 50 25 0 rated power in % case temperature in c
lt o 1 0 0 www.vishay.com vishay sfernice revision: 02-apr-13 4 document number: 50051 for technical questions, contact: sfer@vishay.com this document is subject to change without notice. the products described herein and this document are subject to specific disclaimers, set forth at www.vishay.com/doc?91000 ordering information lto 100 f 2.7 k ? 1 % xxx tu30 e3 model style connections resistance value tolerance 1 % 2 % 5 % 10 % custom design optional on request: special tcr, shape etc. packaging lead (pb)-free global part number information global model size leads ohmic value tolerance packaging lead (pb)-free lto 100 f = radial leads the first four digits are significant figures and the last digit specifies the number of zeros to follow. r designates decimal point. 48r70 = 48.7 ? 48701 = 48 700 ? 10002 = 100 000 ? r0100 = 0.01 ? r4700 = 0.47 ? 27000 = 2700 ? = 2.7 k ? f = 1 % g = 2 % j = 5 % k = 10 % t = tube tube 50 pieces e3 = pure tin 100f270 0 t 3 t o l 0je
legal disclaimer notice www.vishay.com vishay revision: 02-oct-12 1 document number: 91000 disclaimer all product, product specifications and data are subject to change without notice to improve reliability, function or design or otherwise. vishay intertechnology, inc., its affiliates, agents, and employee s, and all persons acting on it s or their behalf (collectivel y, vishay), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any o ther disclosure relating to any product. vishay makes no warranty, repres entation or guarantee regarding the suitabilit y of the products for any particular purpose or the continuing production of any product. to the maximum extent permitted by applicable law, vi shay disclaims (i) any and all liability arising out of the application or use of any product, (ii) any and all liability, including without limitation specia l, consequential or incidental damages, and (iii) any and all i mplied warranties, including warra nties of fitness for particular purpose, non-infringement and merchantability. statements regarding the suitability of products for certain type s of applications are based on vishays knowledge of typical requirements that are often placed on vishay products in generic applications. such statements are not binding statements about the suitability of products for a particular application. it is the customers responsib ility to validate that a particu lar product with the properties descri bed in the product specification is suitable fo r use in a particular application. parameters provided in datasheets and/or specification s may vary in different applications an d performance may vary over time. all operating parameters, including typical pa rameters, must be validated for each customer application by the customers technical experts. product specifications do not expand or otherwise modify vish ays terms and condit ions of purchase, including but not limited to the warranty expressed therein. except as expressly indicate d in writing, vishay products are not designed for use in medical, life-saving, or life-sustaining applications or for any other application in which the failure of the vi shay product could result in personal injury or death. customers using or selling vishay products not expressly indicated for use in such applications do so at their own risk. pleas e contact authorized vishay personnel to ob tain written terms and conditions regarding products designed for such applications. no license, express or implied, by estoppel or otherwise, to any intellectual prope rty rights is granted by this document or by any conduct of vishay. product names and markings noted herein may be trad emarks of their respective owners. material category policy vishay intertechnology, inc. hereby certi fies that all its products that are id entified as rohs-compliant fulfill the definitions and restrictions defined under directive 2011/65/eu of the euro pean parliament and of the council of june 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment (eee) - recast, unless otherwis e specified as non-compliant. please note that some vishay documentation may still make reference to rohs directive 2002/95/ ec. we confirm that all the products identified as being compliant to directive 2002 /95/ec conform to directive 2011/65/eu. vishay intertechnology, inc. hereby certifi es that all its products that are identified as ha logen-free follow halogen-free requirements as per jedec js709a stan dards. please note that some vishay documentation may still make reference to the iec 61249-2-21 definition. we co nfirm that all the products identified as being compliant to iec 61249-2-21 conform to jedec js709a standards.
|
