PTCSSLVT Series/2381 671 914..
Vishay BCcomponents
PTC Thermistors,
Sleeve Type for Over-Temperature Protection
FEATURES
Well-defined protection temperature levels
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
Also available as triple sensor
Compliant to RoHS directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
APPLICATIONS
Over-temperature/over-load protection:
Motor protection (thermal protection of winding)
Industrial electronics
Power supplies
Electronic data processing
QUICK REFERENCE DATA
PARAMETER
Maximum resistance at 25 °C
Minimum resistance at
(T
n
+ 15) °C
Maximum (AC/DC) voltage
Thermal time constant
Temperature range
Weight
Climatic category
VALUE
100
4000
30
8.0
- 40 to (T
n
+ 15)
2.0
40/125/56
UNIT
V
s
°C
g
- °C/+ °C/ days
DESCRIPTION
These PTC thermistors consist of a small PTC ceramic chip
soldered between 2 ETFE insulated silver plated copper
wires, insulated by a thermal sleeve.
The are primarily intended for over-temperature sensing
inside windings, coils, transformers and alike.
PACKAGING
The PTC thermistors are packed in BULK per 500 pcs.
NOMINAL WORKING TEMPERATURES AND ORDERING INFORMATION
NOMINAL WORKING TEMPERATURE
T
n
(°C)
70
80
90
100
110
120
130
140
150
R
max.
at T
n
- 5 °C
()
570
550
550
550
550
550
550
550
550
R
min.
at T
n
+ 5 °C
()
570
1330
1330
1330
1330
1330
1330
1330
1330
CATALOG AND
ORDERING NUMBER
SLEEVE DEVICE
PTCSSLVT071DBE
PTCSSLVT081DBE
PTCSSLVT091DBE
PTCSSLVT101DBE
PTCSSLVT111DBE
PTCSSLVT121DBE
PTCSSLVT131DBE
PTCSSLVT141DBE
PTCSSLVT151DBE
12NC REFRENCE
NUMBER
2381 671 .....
91402
91403
91404
91405
91406
91407
91409
91412
91414
COMPONENT OUTLINES
dimensions in millimeters
D1
D2
L4
L1
D3
L3
L1
L2
L3
D1
D2
Component outline
D3
500 ± 20
7±2
10 ± 3
0.42
0.7
3 max.
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For technical questions, contact:
nlr@vishay.com
Document Number: 29116
Revision: 03-Sep-10
PTCSSLVT Series/2381 671 914..
PTC Thermistors,
Vishay BCcomponents
Sleeve Type for Over-Temperature Protection
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC
10 000 000
10 000 000
1 000 000
2381 671 91402
PTCSSLVT071DBE
100 000
1 000 000
2381 671 91405
PTCSSLVT101DBE
100 000
Resistance (Ω)
10 000
2381 671 91403
PTCSSLVT081DBE
Resistance (Ω)
10 000
2381 671 91406
PTCSSLVT111DBE
1000
1000
100
2381 671 91404
PTCSSLVT091DBE
10
- 50
- 25
0
25
50
75
100
125
150
100
2381 671 91407
PTCSSLVT121DBE
10
- 50 - 25
0
25
50
75
100 125 150 175
Temperature (°C)
Temperature (°C)
1 000 000
100 000
2381 671 91409
PTCSSLVT131DBE
Resistance (Ω)
10 000
2381 671 91412
PTCSSLVT141DBE
1000
100
2381 671 91414
PTCSSLVT151DBE
10
- 50 - 25
0
25
50
75 100 125 150 175 200
Temperature (°C)
Document Number: 29116
Revision: 03-Sep-10
For technical questions, contact:
nlr@vishay.com
www.vishay.com
2
PTCSSLVT Series/2381 671 914..
Vishay BCcomponents
PTC Thermistors,
Sleeve Type 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
R
p
R
s
(R1 = R2)
R1
R
s
R
L
V
o
R
f
R
p
R
s
(R1 = R2)
R2
θ
PTC
thermistor
R
p
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
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For technical questions, contact:
nlr@vishay.com
Document Number: 29116
Revision: 03-Sep-10
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
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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.
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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,
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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
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Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
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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
Revision: 08-Feb-17
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Document Number: 91000
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