PTCEL13R251NBE Vishay

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 non-switching peak-powers of up to 25 kW Can handle high direct voltage up to 1000 V Self protecting in case of overload with no risk of over-heating AEC-Q200 qualified click logo to get started DESIGN SUPPORT TOOLS Rugged construction Material categorization: for definitions of compliance Models Design Tools please see www.vishay.com/doc 99912 Available Available APPLICATIONS Inrush current limiting and load-dump resistor in: QUICK REFERENCE DATA Smoothing and DC-link capacitor banks PARAMETER VALUE UNIT (1) Power inverters Resistance at 25 C (R ) 60 to 500 25 Discharge - charge circuits Switching temperature 130 to 140 C PTCEL thermistors of similar resistance and size may be Maximum inrush current 40 A used in series and parallel combinations to obtain higher (1) Maximum AC voltage 350 to 700 V RMS energy absorption levels. PTCEL thermistors may not be (1) Maximum DC voltage 500 to 1000 V used in series connections to obtain higher voltage levels. DC Operating temperature range -40 to 105 C DESCRIPTION Storage temperature range -40 to 165 C These directly heated ceramic-based doped barium titanate thermistors have a positive temperature coefficient and are Dissipation factor 14 to 19.5 mW/K primarily intended for inrush current limiting and overload Thermal time constant 105 to 120 s protection. They consist of a ceramic pellet soldered (still air cooling) between two tinned CCS wires and coated with a UL 94 V-0 Weight 3.5 to 5.7 g compliant high temperature hard silicone lacquer. The body Note is marked with the logo, cold resistance value, EL on one (1) Other resistance values and maximum operating voltages side and date code on the opposite side. available on request. PACKAGING Matched resistance values available on request 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 E MAX. R I DISSIPATION MIN. HOLD R R TOL. V V C 1 CYCLE WEIGHT 25 25 MAX. LINK MAX. th th PART NUMBER < 1.5 V AT 25C FACTOR DC () (%) (V ) (V ) (J/K) AT 25C (s) (g) RMS DC () (mA) (mW/K) (J) 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 COMPONENT DIMENSIONS in millimeters D T PTCEL13 PTCEL17 D 13.5 max. 17 max. BC 120R H1 17 max. 21 max. H EL 1 H2 3 1 3 1 d 0.6 0.06 0.8 0.08 H 2 L1 20 min. 20 min. (1) F 5 0.8 5 0.8 L T 7.0 max. 7.5 max. 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 PTCs 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: 2 K x C x V N --------------------------------------------------------------- 2 x C x T - T th sw 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 C is the thermal capacity of one PTC in J/K (see table) th T is the minimum switching temperature of the PTCEL (130 C) sw T is the maximum ambient temperature at which the PTC needs to operate amb 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