2381 671 911../PTCSL..T....BE
Vishay BCcomponents
PTC Thermistors, Mini Radial Leaded
for Over-Temperature Protection
FEATURES
•
Well-defined protection temperature levels
•
Fast reaction time (< 15 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
150 °C)
•
No need to reset supply after overtemperature switch
•
Small size and rugged
QUICK REFERENCE DATA
PARAMETER
Maximum resistance at 25 °C
Minimum resistance at (T
n
+ 15) °C
Maximum voltage
Temperature range
Weight:
91102 to 91114
91152 to 91164
Climatic category
≈
0.08
≈
0.11
25/125/56
g
g
VALUE
100
4000
30
- 20 to (T
n
+ 15)
UNIT
Ω
Ω
V
°C
•
Coated leaded and naked devices available
•
Compliant to RoHS directive 2002/95/EC
accordance to WEEE 2002/96/EC
and
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
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
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
RESISTANCE
at T
n
+ 5 °C
(kΩ)
0.570 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 .....
LEADED DEVICE
NORMAL
LEADS
91102
91103
91104
91105
91106
91107
91109
91112
91114
COLOR CODE
LONG LEADS
91152
91153
91154
91155
91156
91157
91159
91162
91164
Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Grey
T
n
(°C)
70
80
90
100
110
120
130
140
150
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60
For technical questions, contact:
nlr@vishay.com
Document Number: 29012
Revision: 08-Jun-09
2381 671 911../PTCSL..T....BE
PTC Thermistors, Mini Radial Leaded
Vishay BCcomponents
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)
CATALOG NUMBERS AND PACKAGING
12NC
2381 671 91102
2381 671 91103
2381 671 91104
2381 671 91105
2381 671 91106
2381 671 91107
2381 671 91109
2381 671 91112
2381 671 91114
SAP
PTCSL20T071DBE
PTCSL20T081DBE
PTCSL20T091DBE
PTCSL20T101DBE
PTCSL20T111DBE
PTCSL20T121DBE
PTCSL20T131DBE
PTCSL20T141DBE
PTCSL20T151DBE
12NC
2381 671 91152
2381 671 91153
2381 671 91154
2381 671 91155
2381 671 91156
2381 671 91157
2381 671 91159
2381 671 91162
2381 671 91164
SAP
PTCSL40T071DBE
PTCSL40T081DBE
PTCSL40T091DBE
PTCSL40T101DBE
PTCSL40T111DBE
PTCSL40T121DBE
PTCSL40T131DBE
PTCSL40T141DBE
PTCSL40T151DBE
SPQ
500
500
500
500
500
500
500
500
500
COMPONENT OUTLINES DIMENSIONS
in millimeters
3.5 max.
3.0 max.
0.5 min.
7.0 max.
2.54
20.0 ± 2
Ø 0.4
Component outline for 91102 to 91114
3.5 max.
3.0 max.
0.5 min.
7.0 max.
2.54
40.0 min.
Ø 0.4
Component outline for 91152 to 91164
Document Number: 29012
Revision: 08-Jun-09
For technical questions, contact:
nlr@vishay.com
www.vishay.com
61
2381 671 911../PTCSL..T....BE
Vishay BCcomponents
PTC Thermistors, Mini Radial Leaded
for Over-Temperature Protection
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91105/91106
and 91107
10
6
1.5 V (DC) max.
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91102/91103
and 91104
10
6
1.5 V (DC) max.
10
5
Tn = 100 °C
Tn = 110 °C
Tn = 120 °C
10
5
Resistance (Ω)
Resistance (Ω)
10
4
10
4
10
3
10
3
10
2
10
2
T
n
= 90
°C
T
n
= 80
°C
T
n
= 70
°C
10
0
50
100
150
200
250
Temperature (°C)
10
0
50
100
150
Temperature (°C)
200
250
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91109
10
6
1.5
V
(DC) max.
TYPICAL RESISTANCE/TEMPERATURE
CHARACTERISTIC FOR
2381 671 91112 and 91114
10
6
1.5
V
(DC) max.
10
5
10
5
Resistance (Ω)
10
3
Resistance (Ω)
10
4
10
4
10
3
10
2
10
2
Tn = 150 °C
Tn = 130 °C
Tn = 140 °C
10
10
0
50
100
150
200
250
Temperature (°C)
0
50
100
150
200
250
Temperature (°C)
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62
For technical questions, contact:
nlr@vishay.com
Document Number: 29012
Revision: 08-Jun-09
2381 671 911../PTCSL..T....BE
PTC Thermistors, Mini Radial Leaded
Vishay BCcomponents
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.
So how does it work? 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
O
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
O
to switch to a high level sufficient to activate an alarm, relay or power shutdown circuit.
APPLICATION EXAMPLES
V
O
R1
R
s
R
L
R
p
> R
s
(R1 = R2)
V
O
R
f
R2
+
θ
PTC
thermistor
R
p
R
p
< R
s
(R1 = R2)
Fig. 1 Typical comparator circuit
Trigger
temperature
T
n
T (°C)
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: 29012
Revision: 08-Jun-09
For technical questions, contact:
nlr@vishay.com
www.vishay.com
63
Legal Disclaimer Notice
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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
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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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