www.vishay.com for technical questions, contact: sfer@vishay.com document number: 51058 22 revision: 19-jul-11 d2to35 vishay sfernice surface mounted power resistor thick film technology this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 features ? aec-q200 qualified ? 35 w at 25 c case temperature ? surface mounted resistor - to-263 (d 2 pak) style package ? wide resistance range from 0.01 ? to 550 k ? ? non inductive ? resistor isolated from metal tab ? solder reflow secure at 270 c/10 s ? compliant to rohs directive 2002/95/ec notes ? for the asssembly on board, we recommend the l ead (pb)-free thermal prof ile as per j-std-020c ? power dissipation is 3.3 w at an ambi ent temperature of 25 c when mounted on a double sided copper board using fr4 standard, 70 m of copper, 39 mm x 30 mm x 1.6 mm dimensions in millimeter s electrical specifications resistance range 0.01 ? to 550 k ? tolerances (standard) 1 % to 10 % power rating and thermal resistance 35 w at 25 c (case temperature) r th (j - c) : 4.28 c/w temperature coefficient see special features table standard: 150 ppm/c limiting element voltage u l 250 v dielectric strength iec 60115-1 2000 v rms - 1 min - 10 ma max. (between terminals and board) insulation resistance ? 10 6 m ? inductance ? 0.1 h critical resistance 1.79 k ? special features resistance values ? 0.010 ? 0.045 ? 0.1 ? 0.5 tolerances 1 % at 10 % requirement temperature coefficient (tcr) (- 55 c + 150 c) iec 60115-1 1100 ppm/c 700 ppm/c 250 ppm/c 150 ppm/c 10.5 1.6 8.8 1.6 tolerance: 0.3 mm 11.00 1.50 6.50 4.02 4.00 2.40 8.00 2.49 0.26 footprint recommendation for solderable contact area: 1.25 4.5 2.8 2.2 0.3 2 5.08 7.6 7.8 min. 8.7 0.2 5 15.4 8.1 5.15 1.25 10.1
document number: 51058 for technical questions, contact: sfer@vishay.com www.vishay.com revision: 19-jul-11 23 d2to35 surface mounted power resistor thick film technology vishay sfernice this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 power rating the temperature of the case should be maintained within the limits specified. mechanical specifications mechanical protection molded resistive element thick film substrate alumina connections tinned copper weight 2.2 g max. environmental specifications temperature range - 55 c to 175 c flammability iec 60695-11-5 2 applications 30 s separated by 60 s dimensions standard package to-263 style (d 2 pak) 100 75 50 25 0 rated power in % case temperature in c 120 0 20 40 60 80 100 120 140 160 175 performance tests conditions requirements momentary overload iec 60115-1 4.13 1.7 p r 5 s for r < 2 ? 1.4 p r 5 s for r ? 2 ? u s < 1.5 u l (0.25 % + 0.005 ? ) rapid temperature change iec 60115-1 te s t n a 5 cycles - 1 h - 55 c to + 175 c (0.5 % + 0.005 ? ) load life iec 60115-1 1000 h at + 25 c (1 % + 0.005 ? ) humidity (steady state) iec 60115-1 iec 60068-2-3 test ca: 56 days rh 95 % (0.5 % + 0.005 ? ) vibration mil std 202 method 204 - test d 10 to 2000 hz (0.2 % + 0.005 ? ) terminal strength iec 60115-1 test ua1/tensile: 20 n/10 s (0.2 % + 0.005 ? ) shock iec 60115-1 iec 60068-2-27 saw-tooth: 100 g n/6 ms (0.5 % + 0.005 ? ) assembly specifications for the assembly on board, we recommend the l ead (pb)-free thermal profile as per j-std-020c tests conditions requirements resistance to soldering heat iec 60115-1 iec 60068-2-58 solder bath method: 270 c/10 s (0.5 % + 0.005 ? ) moisture sensitivity level (msl) ipc/jedec j-std-020c 85 c/85 % rh/168 h level: 1 + pass requirements of tcr overload and dielectic strength after msl
www.vishay.com for technical questions, contact: sfer@vishay.com document number: 51058 24 revision: 19-jul-11 d2to35 vishay sfernice surface mounted power resistor thick film technology this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 choise of the board the user must choose the board according to the working conditions of the compo nent (power, room te mperature). maximum working temperature must not exeed 155 c. the dissipate d 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 outer side of the resistor. it is the thermal resistance of the component: 4.28 c/w. r th (c - a) : thermal resistance value measured between outer side of the resistor and room temperature. it is the thermal resistance of the solder layer (according the quality of th e soldering) and the thermal resistance of the board. example: r th (c - a) for d2to35 power rating 3.5 w at ambient temperature + 25 c. thermal resistance r th (j - c) : 4.28 c/w considering equation (1) we have: ? t = 175 c - 25 c = 150 c r th (j - c) + r th (c - a) = ? t/p = 150/3.5 = 42.8 c/w r th (c - a) = 42.8 c/w - 4.28 c/w = 38.52 c/w accidental overload in any case the applied voltage must be lower than the maximum overload voltage of 375 v. the values indicated on the graph below are applicable to resistors in air or mounted onto a board. single pulse: these informations are for a single pulse on a cold resistor at 25 c (not already used for a dissipation) and for pulses of 10 0 ms maximum duration. the formula used to calculate e is: with: e (j): pulse energy p (w): pulse power t (s): pulse duration u (v): pulse voltage r ( ? ): resistor the energy calculated must be less than that allowed by the graph. p ? t r th (j - c) ?? r th (c - a) ?? + -------------------------------------------------------------- - 1 ?? = 10 -6 10 -5 10 -4 10 -3 10 -2 energy in j overload duration in s energy curve 0.01 0.1 1 10 10 -7 10 -1 100 ep x t u 2 r ------ - x t ==
document number: 51058 for technical questions, contact: sfer@vishay.com www.vishay.com revision: 19-jul-11 25 d2to35 surface mounted power resistor thick film technology vishay sfernice this document is subject to change without notice. the products described herein and this document ar e subject to specific disclaimers, set forth at www.vishay.com/doc?91000 repetitive or superimposed pulses: the following formula is used to calculate the ?equivalent? energy of a repetitive pul se or the ?equivalent energy? of a pulse on a resistor that is already dissipating power. with: e c (j): equivalent pulse energy e (j): known pulse energy p r : resistor power rating p a : mean power being dissipated the energy calculated must be less than that allow ed by the graph and the average power dissipated ( p a ) must not exceed the continuous power of resistor. packaging ? reel ? tube ? tape dimensions (mm) for reel: marking model, style, resi stance value (in ? ), tolerance (in %), manufacturing date, vishay sfernice trademark e c e x 1 p a p r ------ + ?? ?? = ordering information d2to 35 c 100 k ? 1 % xxx e3 model style connections resistance value tolerance custom design lead (pb)-free f = 1 % g = 2 % j = 5 % k = 10 % optional on request: shape, etc sap part numbering guidelines global model size leads ohmic value tolerance packaging lead (pb)-free d2to 035 c = surface mount the first four digits are significant figures and the last digit specifies the number of zeros to follow. r designates decimal point. 4 8 r70 = 48.7 ? 4 8 701 = 48 700 ? 10002 = 100 000 ? r0100 = 0.01 ? r6 8 00 = 0.68 ?? 27000 = 2700 ? = 2.7 k ? f = 1 % g = 2 % j = 5 % k = 10 % r = reel 500 pieces t = tube 50 pieces e3 = pure tin 16 10.6 15.8 24 4.9 035cr20 0 r 3 t d o 2 0ke
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