PTCEL
www.vishay.com Vishay BCcomponents
Revision: 25-Apr-2018 1Document 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
DESIGN SUPPORT TOOLS
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 1000 V
• Self protecting in case of overload with no risk of
over-heating
• AEC-Q200 qualified
• Rugged construction
• Material categorization: for definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
Inrush current limiting and load-dump resistor in:
• Smoothing and DC-link capacitor banks
• Power inverters
• Discharge - charge circuits
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.
DESCRIPTION
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.
PACKAGING
PTC thermistors are available in 100 pieces (PTCEL13) or
50 pieces (PTCEL17) bulk packed or tape on reel option
500 pieces on request.
QUICK REFERENCE DATA
PARAMETER VALUE UNIT
Resistance at 25 °C (R25) (1) 60 to 500
Switching temperature 130 to 140 °C
Maximum inrush current 40 A
Maximum AC voltage (1) 350 to 700 VRMS
Maximum DC voltage (1) 500 to 1000 VDC
Operating temperature range -40 to 105 °C
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
click logo to get started
Available
Models
Available
Design Tools
ELECTRICAL DATA AND ORDERING INFORMATION
PART NUMBER R25
()
R25 TOL.
(%)
VMAX.
(VRMS)
VLINK MAX.
(VDC)
RMIN.
< 1.5 VDC
()
IHOLD
AT 25°C
(mA)
Cth
(J/K)
EMAX.
1 CYCLE
AT 25°C
(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
PTCEL
www.vishay.com Vishay BCcomponents
Revision: 25-Apr-2018 2Document 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
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:
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
• 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
DT
F
H1
d
L
BC
120R
EL
H2
COMPONENT DIMENSIONS in millimeters
PTCEL13 PTCEL17
D 13.5 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 (1) 5 ± 0.8 5 ± 0.8
T 7.0 max. 7.5 max.
K x C x V2
2 x Cth x Tsw - Tamb

---------------------------------------------------------------
PTCEL
www.vishay.com Vishay BCcomponents
Revision: 25-Apr-2018 3Document 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
Vm 1.5 VDC
VMAX. DERATING VS. TAMB
MINIMUM PTC RESISTANCE UNDER PULSED
VOLTAGE
RESIDUAL CURRENT VS. VOLTAGE
Resistance ()
Temperature (°C)
10
102
103
104
108
105
106
107
-50 25 100 150 200 225-25 0 50 75 125 175
PTCEL17R501TBE
PTCEL13R600LBE
PTCEL13R121MBE
PTCEL13R251NBE
PTCEL13R501RBE
PTCEL17R600MBE
PTCEL17R121NBE
Vmax. (%)
Tamb (°C)
-50 0 75 125 175 200-25 25 50 100 150
0
80
60
40
20
120
100
Rmin. (Vp) / R25
VPTV-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 1000100 300 400 600 800
I (mA )
U (VRMS )
100 1000
1
10
100
PTCEL13R600LBE
PTCEL13R501RBE
PTCEL17R600MBE
PTCEL17R121NBE
PTCEL13R251NBE
PTCEL13R121MBE
PTCEL17R501TBE
PTCEL
www.vishay.com Vishay BCcomponents
Revision: 25-Apr-2018 4Document 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 TAMB FOR PTCEL13
CONSECUTIVE ENERGY LOAD-DUMPS AT
DIFFERENT TAMB FOR PTCEL17
Number of Consecutive Load-Dumps
Energy / Load-Dump (J)
10 100
1
10
25 °C
55 °C
85 °C
105 °C
Legal Disclaimer Notice
www.vishay.com Vishay
Revision: 08-Feb-17 1Document 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 employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s 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 customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated 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 Vishay 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.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED