Thermistors, Sensors Over-Temperature Protection Well-defined pro

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Thermistors, Sensors Over-Temperature Protection Well-defined pro

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2381 912./PTCSG.T.BE
Thermistors, Sensors Over-Temperature Protection
Well-defined protection temperature levels Fast reaction time still air) Accurate resistance ease circuit design Excellent long term behavior after 1000 Wide range protection temperatures need reset supply after overtemperature switch Small size rugged Coated leaded naked devices available Compliant RoHS directive 2002/95/EC accordance WEEE 2002/96/EC
QUICK REFERENCE DATA
PARAMETER Maximum resistance Minimum resistance Maximum (DC) voltage Thermal time constant Temperature range Weight: Climatic category VALUE 4000 40/125/56 UNIT
APPLICATIONS
Over-temperature protection control Industrial electronics Power supplies Electronic data processing Motor protection
DESCRIPTION
These directly heated thermistors have positive temperature coefficient primarily intended sensing.
NOMINAL WORKING TEMPERATURES ORDERING INFORMATION
NOMINAL WORKING TEMPERATURE (°C) Rmax. Rmax. 1330 1330 1330 1330 1330 1330 1330 1330 CATALOG NUMBER 2381 DEVICE 91202 91203 91204 91205 91206 91207 91209 91212 91214
ELECTRICAL CHARACTERISTICS
PARAMETER Maximum resistance Maximum resistance Minimum resistance Minimum resistance Maximum voltage www.vishay.com VALUES Nominal Working Temperatures Ordering Information table Nominal Working Temperatures Ordering Information table 4000 technical questions, contact: nlr@vishay.com Document Number: 29018 Revision: 08-Jun-09
2381 912./PTCSG.T.BE
Thermistors, Sensors Over-Temperature Protection
CATALOG NUMBERS PACKAGING
12NC 2381 91202 2381 91203 2381 91204 2381 91205 2381 91206 2381 91207 2381 91209 2381 91212 2381 91214 PTCSGM3T071DBE PTCSGM3T081DBE PTCSGM3T091DBE PTCSGM3T101DBE PTCSGM3T111DBE PTCSGM3T121DBE PTCSGM3T131DBE PTCSGM3T141DBE PTCSGM3T151DBE
COMPONENT OUTLINES DIMENSIONS millimeters
0.145 [3.68] dia. hole
0.281 [7.14]
0.157 0.039
1.496 0.157
0.64 [16.26] max. 0.04 [1.016]
Component outline 2381 91202 91214
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC
2381 91202 PTCSGM3T071DBE
2381 91205 PTCSGM3T101DBE
Resistance
2381 91203 PTCSGM3T081DBE
Resistance
2381 91206 PTCSGM3T111DBE
1000
1000
2381 91204 PTCSGM3T091DBE
2381 91207 PTCSGM3T121DBE
Temperature (°C)
Temperature (°C)
Document Number: 29018 Revision: 08-Jun-09
technical questions, contact: nlr@vishay.com
www.vishay.com
2381 912./PTCSG.T.BE
Thermistors, Sensors Over-Temperature Protection
2381 91209 PTCSGM3T131DBE
Resistance
2381 91212 PTCSGM3T141DBE 1000
2381 91214 PTCSGM3T151DBE
Temperature (°C)
APPLICATION SPECIFIC DATA
Negative Temperature Coefficient (NTC) thermistors well known temperature sensing. What well known, however, that Positive Temperature Coefficient (PTC) thermistors used thermal protection. Although their operating principles similar, applications very different; whereas thermistors sense measure temperature over defined range, thermistors switch particular temperature. Just like thermostats they protect such equipment components motors, transformers, power transistors thyristors against overtemperature. thermistor less expensive than thermostat, switch temperature more accurately specified. also smaller easier design-in electronic circuitry. does work? thermistor mounted thermal contact with equipment protected, connected into bridge comparator circuit, such shown Fig. normal temperature, thermistor resistance (Rp) lower than (see Fig. comparator's output voltage will low. equipment overtemperature occurs, thermistor will quickly heat trigger nominal reference temperature whereupon resistance will increase value much higher than causing switch high level sufficient activate alarm, relay power shutdown circuit.
APPLICATION EXAMPLES
thermistor
Trigger temperature
(°C)
Fig. Typical comparator circuit
Fig. Typical switch characteristic
www.vishay.com
technical questions, contact: nlr@vishay.com
Document Number: 29018 Revision: 08-Jun-09
Legal Disclaimer Notice
Vishay
Disclaimer
product specifications data subject change without notice. Vishay Intertechnology, Inc., affiliates, agents, employees, persons acting their behalf (collectively, "Vishay"), disclaim liability errors, inaccuracies incompleteness contained herein other disclosure relating product. Vishay disclaims liability arising application product described herein information provided herein maximum extent permitted law. product specifications expand otherwise modify Vishay's terms conditions purchase, including limited warranty expressed therein, which apply these products. license, express implied, estoppel otherwise, intellectual property rights granted this document conduct Vishay. products shown herein designed medical, life-saving, life-sustaining applications unless otherwise expressly indicated. Customers using selling Vishay products expressly indicated such applications entirely their risk agree fully indemnify Vishay damages arising resulting from such sale. Please contact authorized Vishay personnel obtain written terms conditions regarding products designed such applications. Product names markings noted herein trademarks their respective owners.
Document Number: 91000 Revision: 18-Jul-08
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