PTCEL www.vishay.com Vishay BCcomponents PTC Thermistors, Inrush current limiter and Energy Load-Dump FEATURES * High energy absorption levels up to 240 J * High number of inrush-power cycles: > 50 000 cycles * Highly resistant against peak-powers of up to 25 kW non-switching * Can handle high direct voltage up to 1000 V * Self protecting in case of overload with no risk of over-heating * AEC-Q200 qualified DESIGN SUPPORT TOOLS Models Available click logo to get started * Rugged construction * Material categorization: for definitions of compliance please see www.vishay.com/doc?99912 Design Tools Available APPLICATIONS Inrush current limiting and load-dump resistor in: QUICK REFERENCE DATA PARAMETER * Smoothing and DC-link capacitor banks VALUE UNIT Resistance at 25 C (R25) (1) 60 to 500 * Power inverters Switching temperature 130 to 140 C * Discharge - charge circuits Maximum inrush current 40 A Maximum AC voltage (1) 350 to 700 VRMS 500 to 1000 VDC PTCEL thermistors of similar resistance and size may be used in series and parallel combinations to obtain higher energy absorption levels. PTCEL thermistors may not be used in series connections to obtain higher voltage levels. Maximum DC voltage (1) Operating temperature range -40 to 105 C DESCRIPTION Storage temperature range -40 to 165 C Dissipation factor 14 to 19.5 mW/K Thermal time constant (still air cooling) 105 to 120 s Weight 3.5 to 5.7 g These directly heated ceramic-based doped barium titanate thermistors have a positive temperature coefficient and are primarily intended for inrush current limiting and overload protection. They consist of a ceramic pellet soldered between two tinned CCS wires and coated with a UL 94 V-0 compliant high temperature hard silicone lacquer. The body is marked with the logo, cold resistance value, EL on one side and date code on the opposite side. Note (1) Other resistance values and maximum operating voltages available on request. Matched resistance values available on request PACKAGING PTC thermistors are available in 100 pieces (PTCEL13) or 50 pieces (PTCEL17) bulk packed or tape on reel option 500 pieces on request. ELECTRICAL DATA AND ORDERING INFORMATION PART NUMBER R25 () R25 TOL. (%) VMAX. (VRMS) VLINK MAX. (VDC) RMIN. < 1.5 VDC () IHOLD AT 25C (mA) Cth (J/K) EMAX. 1 CYCLE AT 25C (J) th (s) DISSIPATION FACTOR (mW/K) WEIGHT (g) PTCEL13R600LBE 60 30 350 500 32 120 1.45 150 105 14.0 3.5 PTCEL13R121MBE 120 30 440 625 64 85 1.45 150 105 14.0 3.5 PTCEL13R251NBE 250 30 480 680 130 60 1.45 150 105 14.0 3.5 PTCEL13R501RBE 500 30 560 800 260 42 1.45 150 105 14.0 3.5 PTCEL17R600MBE 60 30 440 625 32 140 2.3 240 120 19.5 5.7 PTCEL17R121NBE 120 30 460 650 64 100 2.3 240 120 19.5 5.7 PTCEL17R501TBE 500 30 700 1000 260 50 2.3 230 120 19.5 5.7 Revision: 25-Apr-2018 Document Number: 29165 1 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 PTCEL www.vishay.com Vishay BCcomponents OUTLINE AND DIMENSIONS in millimeters D T COMPONENT DIMENSIONS in millimeters BC 120R EL H1 PTCEL13 PTCEL17 D 13.5 max. 17 max. H1 17 max. 21 max. H2 31 31 d 0.6 0.06 0.8 0.08 L1 20 min. 20 min. F (1) 5 0.8 5 0.8 T 7.0 max. 7.5 max. H2 L d F Note (1) F pitch = 7.5 mm available on request REQUIRED NUMBER OF PTC THERMISTORS TO LIMIT CURRENT AND ABSORB ENERGY By using several PTC's in a series / parallel network, the maximum current limitation and absorbed energy 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 value. Energy absorption per PTC in a network depends on current distribution 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 capacitor bank application to properly charge or discharge a given amount of energy without follow current: KxCxV 2 N --------------------------------------------------------------2 x C th x T sw - T amb 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 * Cth is the thermal capacity of one PTC in [J/K] (see table) * Tsw is the minimum switching temperature of the PTCEL (130 C) * Tamb is the maximum ambient temperature at which the PTC needs to operate * K is the factor that determines the charging operation mode K = 1 for DC charging or discharging K = 0.96 for 3-phase rectified charging K = 0.76 for single phase rectified charging Revision: 25-Apr-2018 Document Number: 29165 2 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 PTCEL www.vishay.com Vishay BCcomponents RESISTANCE vs. TEMPERATURE Vm 1.5 VDC MINIMUM PTC RESISTANCE UNDER PULSED VOLTAGE 0.80 108 107 0.70 0.65 0.60 Rmin. (Vp) / R25 106 Resistance () 0.75 PTCEL17R501TBE PTCEL13R600LBE PTCEL13R121MBE PTCEL13R251NBE PTCEL13R501RBE PTCEL17R600MBE PTCEL17R121NBE 105 104 0.55 0.50 0.45 0.40 103 0.35 0.30 102 0.25 10 -50 -25 0.20 0 25 50 75 100 125 150 175 200 225 0 VMAX. DERATING VS. TAMB 100 200 300 400 500 600 700 800 900 1000 VPTV-pulsed Temperature (C) RESIDUAL CURRENT VS. VOLTAGE 120 100 100 I (mA ) Vmax. (%) 80 60 PTCEL13R600LBE PTCEL13R501RBE PTCEL17R600MBE PTCEL17R121NBE 10 40 PTCEL13R251NBE PTCEL13R121MBE PTCEL17R501TBE 20 0 -50 -25 0 25 50 75 100 125 150 175 200 Tamb (C) Revision: 25-Apr-2018 1 100 1000 U (VRMS ) Document Number: 29165 3 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 PTCEL www.vishay.com Vishay BCcomponents CONSECUTIVE ENERGY LOAD-DUMPS AT DIFFERENT TAMB FOR PTCEL13 CONSECUTIVE ENERGY LOAD-DUMPS AT DIFFERENT TAMB FOR PTCEL17 10 25 C Number of Consecutive Load-Dumps Number of Consecutive Load-Dumps 10 25 C 55 C 85 C 55 C 85 C 105 C 105 C 1 10 100 Energy / Load-Dump (J) Revision: 25-Apr-2018 1 10 100 Energy / Load-Dump (J) Document Number: 29165 4 For technical questions, contact: nlr@vishay.com THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. 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