PTCSC..T....BE/2381 671 910..
Vishay BCcomponents
PTC Thermistors, Mini Chips
for Over-Temperature Protection
FEATURES
•
•
•
•
•
•
•
•
•
Well-defined protection temperature levels
Fast reaction time (< 6 s in still air)
Accurate resistance for ease of circuit design
Excellent long term behavior (< 1 °C or 5 % after
1000 h at
T
n
+ 15 °C)
Wide range of protection temperatures (70 °C to
170 °C)
No need to reset supply after overtemperature switch
Small size and rugged
Coated leaded and naked devices available
Compliant to RoHS directive 2002/95/EC and
accordance to WEEE 2002/96/EC
QUICK REFERENCE DATA
PARAMETER
Maximum resistance at 25 °C
Minimum resistance at (T
n
+ 15) °C
Maximum (DC) voltage
Temperature range
Weight
Climatic category
VALUE
100
4000
30
- 20 to (T
n
+ 15)
≈
0.006
25/125/56
UNIT
Ω
Ω
V
°C
g
in
APPLICATIONS
Over-temperature protection and control in:
•
Industrial electronics
•
Power supplies
•
Electronic data processing
•
Motor protection
DESCRIPTION
These directly heated thermistors have a positive
temperature coefficient and are primarily intended for
sensing.
NOMINAL WORKING TEMPERATURES AND ORDERING INFORMATION
NOMINAL WORKING TEMPERATURE
T
n
(°C)
70
80
90
100
110
120
130
140
150
155
160
170
RESISTANCE from
- 20 °C to
T
n
- 20 °C
(Ω)
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
30 to 250
RESISTANCE
at
T
n
- 5 °C
(Ω)
50 to 570
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
50 to 550
RESISTANCE
at
T
n
+ 5 °C
(kΩ)
0.57 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
1.33 to 50
CATALOG NUMBER 2381 671 .....
NAKED CHIP
(1)
1.7 x 1.7
(mm)
91002
91003
91004
91005
91006
91007
91009
91012
91014
91015
91016
91017
Note
(1)
Naked chips are packed in a hermetically-sealed alu-plastic bag
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56
For technical questions, contact:
nlr@vishay.com
Document Number: 29017
Revision: 27-Oct-10
PTCSC..T....BE/2381 671 910..
PTC Thermistors, Mini Chips
for Over-Temperature Protection
ELECTRICAL CHARACTERISTICS
PARAMETER
Maximum resistance at 25 °C
Maximum resistance at (T
n
- 5)
°C
Minimum resistance at (T
n
+ 15)
°C
Minimum resistance at (T
n
+ 5)
°C
Maximum voltage
VALUES
100
Ω
See Nominal Working Temperatures and Ordering Information table
4000
Ω
See Nominal Working Temperatures and Ordering Information table
30 V (AC or DC)
Vishay BCcomponents
CATALOG NUMBERS AND PACKAGING
12NC
2381 671 91002
2381 671 91003
2381 671 91004
2381 671 91005
2381 671 91006
2381 671 91007
2381 671 91009
2381 671 91012
2381 671 91014
2381 671 91015
2381 671 91016
2381 671 91017
SAP
PTCSC17T071DBE
PTCSC17T081DBE
PTCSC17T091DBE
PTCSC17T101DBE
PTCSC17T111DBE
PTCSC17T121DBE
PTCSC17T131DBE
PTCSC17T141DBE
PTCSC17T151DBE
PTCSC17T155DBE
PTCSC17T161DBE
PTCSC17T171DBE
SPQ
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
5000
COMPONENT OUTLINES DIMENSIONS
in millimeters
1.7 ± 0.15
0.8 ± 0.1
Component outline for 91002 to 91017
For clamping, reflow or hand soldering. Not intended for either wave or ultrasonic soldering and not for spot welding.
All standard solder alloys with low activated halogene-free fluxes are acceptable, for example: 62Sn/36Pb/2Ag.
1.7 ± 0.15
Document Number: 29017
Revision: 27-Oct-10
For technical questions, contact:
nlr@vishay.com
www.vishay.com
57
PTCSC..T....BE/2381 671 910..
Vishay BCcomponents
PTC Thermistors, Mini Chips
for Over-Temperature Protection
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91005,
2381 671 91006 and 2381 671 91007
10
6
1.5
V
(DC) max.
1.5
V
(DC) max.
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91002,
2381 671 91003 and 2381 671 91004
10
6
Tn = 100 °C
10
5
10
5
Tn = 110 °C
Tn = 120 °C
Resistance (Ω)
Resistance (Ω)
10
4
10
4
10
3
10
3
Tn = 90 °C
10
2
Tn =
80
°C
Tn = 70 °C
10
10
10
2
0
50
100
150
Temperature (°C)
200
250
0
50
100
150
Temperature (°C)
200
250
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91009,
2381 671 91012 and 2381 671 91014
10
6
1.5
V
(DC) max.
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91015,
2381 671 91016 and 2381 671 91017
10
6
1.5 V (DC) max.
Tn = 155
°C
10
5
10
5
Resistance (Ω)
Resistance ()
10
4
10
4
Tn = 160
°C
10
3
10
3
Tn = 170
°C
Tn = 145 °C
10
2
Tn = 150 °C
Tn = 140 °C
10
10
2
10
0
50
100
150
Temperature (°C)
200
250
0
50
100
150
Temperature (°C)
200
250
www.vishay.com
58
For technical questions, contact:
nlr@vishay.com
Document Number: 29017
Revision: 27-Oct-10
PTCSC..T....BE/2381 671 910..
PTC Thermistors, Mini Chips
for Over-Temperature Protection
APPLICATION SPECIFIC DATA
Negative Temperature Coefficient (NTC) thermistors are well known for temperature sensing. What is not well known, however,
is that Positive Temperature Coefficient (PTC) thermistors can be used for thermal protection. Although their operating principles
are similar, the applications are very different; whereas NTC thermistors sense and measure temperature over a defined range,
PTC thermistors switch at one particular temperature.
Just like thermostats they protect such equipment and components as motors, transformers, power transistors and thyristors
against overtemperature. A PTC thermistor is less expensive than a thermostat, and its switch temperature can be more
accurately specified. It is also smaller and easier to design-in to electronic circuitry.
The PTC thermistor is mounted in thermal contact with the equipment to be protected, and connected into the bridge arm of a
comparator circuit, such as shown in Fig. 1. At normal temperature, the PTC thermistor resistance (R
p
) is lower than
R
s
(see
Fig. 2), so the comparator’s output voltage V
0
will be low. If an equipment overtemperature occurs, the PTC thermistor will quickly
heat up to its trigger or nominal reference temperature
T
n
, whereupon its resistance will increase to a value much higher than
R
s
,
causing V
0
to switch to a high level sufficient to activate an alarm, relay or power shutdown circuit.
Vishay BCcomponents
APPLICATION EXAMPLES
V
O
R1
R
s
R
L
R
p
> R
s
(R1 = R2)
V
O
R
f
R2
+
PTC
thermistor
R
p
R
p
< R
s
(R1 = R2)
Trigger
temperature
T
n
T (°C)
Fig. 1 Typical comparator circuit
Fig. 2 Typical switch characteristic
+
θ
+
θ
+
θ
As soon as one or more of the windings becomes too hot, the
motor is switched off.
Fig. 3 Temperature protection of electric motors
Document Number: 29017
Revision: 27-Oct-10
For technical questions, contact:
nlr@vishay.com
www.vishay.com
59
Legal Disclaimer Notice
www.vishay.com
Vishay
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.
Material Category Policy
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as RoHS-Compliant fulfill the
definitions and restrictions defined under Directive 2011/65/EU of The European Parliament and of the Council
of June 8, 2011 on the restriction of the use of certain hazardous substances in electrical and electronic equipment
(EEE) - recast, unless otherwise specified as non-compliant.
Please note that some Vishay documentation may still make reference to RoHS Directive 2002/95/EC. We confirm that
all the products identified as being compliant to Directive 2002/95/EC conform to Directive 2011/65/EU.
Vishay Intertechnology, Inc. hereby certifies that all its products that are identified as Halogen-Free follow Halogen-Free
requirements as per JEDEC JS709A standards. Please note that some Vishay documentation may still make reference
to the IEC 61249-2-21 definition. We confirm that all the products identified as being compliant to IEC 61249-2-21
conform to JEDEC JS709A standards.
Revision: 02-Oct-12
1
Document Number: 91000
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