Thermistors, Temperature Protection Well-defined protection tempe
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2381 910./PTCSC.T.BE
Thermistors, Temperature Protection
Well-defined protection temperature levels Fast reaction time still air) Accurate resistance ease circuit design Excellent long term behavior after 1000 hrs. Wide range protection temperatures need reset supply after overtemperature switch Small size rugged Coated leaded naked devices available Component accordance RoHS 2002/95/EC WEEE 2002/96/EC
QUICK REFERENCE DATA
PARAMETER Maximum resistance Minimum resistance Maximum (DC) voltage Temperature range Weight: 91002 91014 91072 91087 Climatic category 0.006 0.003 25/125/56 VALUE 4000 UNIT
APPLICATIONS
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) RESISTANCE from RESISTANCE RESISTANCE 0.57 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 1.33 CATALOG NUMBER 2381 NAKED CHIP1) (mm) 91072 910732) 91074 91075 91076 91077 91078 91079 91081 91082 91083 91084 91085 91086 91087 (mm) 91002 91003 91004 91005 91006 91007 91009 91012 91014 91015 91016 91017
Notes Naked chips packed hermetically-sealed alu-plastic bag. Resistance Resistance 0.57
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Document Number: 29017 Revision: 31-Aug-06
2381 910./PTCSC.T.BE
Thermistors, Temperature Protection
ELECTRICAL CHARACTERISTICS
PARAMETER Maximum resistance Maximum resistance Minimum resistance Minimum resistance Maximum voltage VALUES Nominal Working Temperatures Ordering Information table 4000 Nominal Working Temperatures Ordering Information table
CATALOG NUMBERS PACKAGING
2381 91072 2381 91073 2381 91074 2381 91075 2381 91076 2381 91077 2381 91078 2381 91079 2381 91081 2381 91082 2381 91083 2381 91084 2381 91085 2381 91086 2381 91087 PTCSC10T071DBE PTCSC10T081DBE PTCSC10T091DBE PTCSC10T101DBE PTCSC10T111DBE PTCSC10T121DBE PTCSC10T125DBE PTCSC10T131DBE PTCSC10T135DBE PTCSC10T141DBE PTCSC10T145DBE PTCSC10T151DBE PTCSC10T155DBE PTCSC10T161DBE PTCSC10T171DBE 2381 91002 2381 91003 2381 91004 2381 91005 2381 91006 2381 91007 2381 91009 2381 91012 2381 91014 2381 91015 2381 91016 2381 91017 PTCSC17T071DBE PTCSC17T081DBE PTCSC17T091DBE PTCSC17T101DBE PTCSC17T111DBE PTCSC17T121DBE PTCSC17T131DBE PTCSC17T141DBE PTCSC17T151DBE PTCSC17T155DBE PTCSC17T161DBE PTCSC17T171DBE 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000 5000
COMPONENT OUTLINES Dimensions millimeters
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC 2381 91.2, 91.3 91.4
(DC) max.
Component outline 91071 91087
0.15
Resistance
0.15
Component outline 91002 91017 clamping, reflow hand soldering. intended either wave ultrasonic soldering spot welding. standard solder alloys with activated halogene-free fluxes acceptable, example: 62Sn/36Pb/2Ag. Document Number: 29017 Revision: 31-Aug-06
Temperature (°C)
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2381 910./PTCSC.T.BE
Thermistors, Temperature Protection
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC 2381 91.5, 91.6 91.7
(DC) max.
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC 2381 91078, 91.9 91081
(DC) max.
Resistance Resistance
Temperature (°C)
Temperature (°C)
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC 2381 91.2, 91083 91.4
(DC) max.
TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC 2381 91.5, 91.6 91.7
(DC) max.
Resistance
Resistance
Temperature (°C)
Temperature (°C)
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Document Number: 29017 Revision: 31-Aug-06
2381 910./PTCSC.T.BE
Thermistors, Temperature Protection
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
soon more windings becomes hot, motor switched off.
thermistors located above fluid level will heated temperature greater than When immersed they cooled such that their resistance value reduced. Fig. Liquid-level indication www.vishay.com
Fig. Temperature protection electric motors Document Number: 29017 Revision: 31-Aug-06
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Notice
Specifications products displayed herein subject change without notice. Vishay Intertechnology, Inc., anyone behalf, assumes responsibility liability errors inaccuracies. Information contained herein intended provide product description only. license, express implied, estoppel otherwise, intellectual property rights granted this document. Except provided Vishay's terms conditions sale such products, Vishay assumes liability whatsoever, disclaims express implied warranty, relating sale and/or Vishay products including liability warranties relating fitness particular purpose, merchantability, infringement patent, copyright, other intellectual property right. products shown herein designed medical, life-saving, life-sustaining applications. Customers using selling these products such applications their risk agree fully indemnify Vishay damages resulting from such improper sale.
Document Number: 91000 Revision: 08-Apr-05
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