ptcel www.vishay.com vishay bccomponents revision: 31-may-16 1 document number: 29165 for technical questions, contact: nlr@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 ptc thermistors, inrush current limiter and energy load-dump note (1) other resistance values and maximum operating voltages available on request. ? matched resistance values available on request. features ? high energy absorption levels up to 240 j ? high number of inrush-power cycles: ? > 50 000 cycles ? highly resistant against non-switching peak-powers of up to 25 kw ? can handle high direct voltage up to 800 v ? self protecting in case of overload ? no risk of over-heating ? rugged construction ? material categorization: fo r definitions of compliance please see www.vishay.com/doc?99912 applications inrush current limiting an d load-dump resistor in: ? smoothing and dc-l ink capacitor banks ? power inverters ? discharge - charge circuits ptcel thermistors of similar resistance and size may be used in series and parallel co mbinations to obtain higher energy absorption levels. ptcel thermistors may not be used in series connections to obtain higher voltage levels. description these ptc inrush current limiting or energy absorbing thermistors consist of a medi um resistivity doped barium titanate ceramic with copper clad steel wires lead (pb)-free soldered to the ag metalized pellet. a high temperature silicone coating covers the cera mic body and is marked with the cold resistance value, logo, el and date code. packaging ptc thermistors are available in 100 pieces (ptcel13) or 50 pieces (ptcel17) bulk pack ed or tape on reel option 500 pieces on request. note ? tape on reel version available on request. other resistance values or max voltage levels available on request. quick reference data parameter value unit resistance at 25 c ( r 25 ) (1) 60 to 500 ? switching temperature 130 to 140 c maximum inrush current 40 a maximum ac voltage 350 to 560 v rms maximum dc voltage (1) 500 to 800 v dc operating temperature range -40 to 105 c storage temperature range -40 to 165 c dissipation factor 11.5 to 15.5 mw/k thermal time constant ? (still air cooling) 110 to 150 s weight 3.2 to 5.0 g electrical data and ordering information part number r 25 ( ? ) r 25 tol. (%) v max. (v rms ) v link max. (v dc ) r min. < 1.5 v dc ( ? ) i hold at 25c (ma) c th (j/k) e max. 1 cycle at 25c (j) ? th (s) dissipation factor (mw/k) weight (g) ptcel13r600lbe 60 30 350 500 32 120 1.45 150 110 11.5 3.2 ptcel13r121mbe 120 30 440 625 64 85 1.45 150 110 11.5 3.2 ptcel13r251nbe 250 30 480 680 130 60 1.45 150 110 11.5 3.2 ptcel13r501rbe 500 30 560 800 260 42 1.45 150 110 11.5 3.2 PTCEL17R600MBE 60 30 440 625 32 140 2.3 240 150 15.5 5 ptcel17r121nbe 120 30 460 650 64 100 2.3 240 150 15.5 5
ptcel www.vishay.com vishay bccomponents revision: 31-may-16 2 document number: 29165 for technical questions, contact: nlr@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 outline and dimensions in millimeters required number of ptc thermistors to limit current and absorb energy by using several ptcs in a series / parall el network, the maximum curre nt limitation and absorbed en ergy levels can be further optimized. for homogeneous current and energy distribution it is recommended to combine only ptcel of the same size and matched resistance va lue. energy absorption per ptc in a network depends on current distribu tion in the network and as such on the individual ptc resistance value. ptcel thermistors might be used in a series connection to further lower the inrush current, but not to increase the maximum allowed voltage levels. following formula may be used to calculate the minimum number of ptcel thermistors required in a dc link or other capa citor bank application to properly charge or discharge a given amount of energy without follow current: n ? notes ? n is the number of ptcel required in the network. ? c is the total capacitor value to charge or discharge in f. ? v is the maximum dc voltage on the capacitor c. ?c th is the thermal capacity of one ptc in [j/k] (see table). ?t sw is the minimum switching temperature of the ptcel (130 c). ?t amb is the maximum ambient temperature at which the ptc needs to operate. h2 h3 l1 d f dt component dimensions in millimeters ptcel13 ptcel17 d 13 max. 17 max. h1 17 max. 21 max. h2 3 1 3 1 d 0.6 0.06 0.8 0.08 l1 20 min. 20 min. f 5 0.8 5 0.8 t 7.0 max. 7.5 max. c x v 2 2 x c th x t sw - t amb ?? ---------------------------------------------------------------
ptcel www.vishay.com vishay bccomponents revision: 31-may-16 3 document number: 29165 for technical questions, contact: nlr@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 resistance vs. temperature v m ? 1.5 v dc v max. derating vs. t amb minimum ptc resistance under pulsed voltage residual current vs. voltage resistance ( ? ) temperature (c) 10 10 2 10 3 10 4 10 8 10 5 10 6 10 7 -50 25 100 150 200 225 -25 0 50 75 125 175 ptcel13r600lbe ptcel13r121mbe ptcel13r251nbe ptcel13r501rbe PTCEL17R600MBE ptcel17r121nbe v max. (%) t amb (c) -50 0 75 125 175 200 -25 25 50 100 150 0 80 60 40 20 120 100 r min. (vp) / r 25 v ptv-pulsed 0.20 0.75 0.70 0.65 0.60 0.55 0.50 0.45 0.40 0.35 0.30 0.25 0.80 0 200 500 700 900 1000 100 300 400 600 800 i (ma ) u (v rms ) 100 1000 1 10 100 ptcel13r600lbe ptcel13r121mbe ptcel13r251nbe ptcel13r501rbe PTCEL17R600MBE ptcel17r121nbe
ptcel www.vishay.com vishay bccomponents revision: 31-may-16 4 document number: 29165 for technical questions, contact: nlr@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 consecutive energy load-dumps at different t amb for ptcel13 consecutive energy load-dumps at different t amb for ptcel17 number of consecutive load-dumps energy / load-dump (j) 10 100 1 10 25 c 55 c 85 c 105 c number of consecutive load-dumps energy / load-dump (j) 10 100 1 10 25 c 55 c 85 c 105 c
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