PTCSGM3T141DBE

2381 671 912../PTCSG..T....BE Vishay BCcomponents PTC Thermistors, For Temperature Protection FEATURES • • • • • • • • • QUICK REFERENCE DATA PARAMETER Well-defined protection temperature levels Fast reaction time (< 30 s in still air) Accurate resistance for ease of circuit design Excellent long term behavior (< 1 °C or 5 % after 1000 h at Tn + 15 °C) Wide range of protection temperatures (70 °C to 150 °C) No need to reset supply after overtemperature switch Small size and rugged Coated leaded and naked devices available Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC VALUE UNIT Maximum resistance at 25 °C 100 Ω Minimum resistance at (Tn + 15) °C 4000 Ω Maximum (DC) voltage 30 V Thermal time constant ± 8.0 s - 40 to (Tn + 15) °C DESCRIPTION ± 2.0 g These directly heated thermistors have a positive temperature coefficient and are primarily intended for sensing. Temperature range Weight: Climatic category APPLICATIONS • • • • 40/125/56 Industrial electronics Power supplies Electronic data processing Motor protection NOMINAL WORKING TEMPERATURES AND ORDERING INFORMATION CATALOG NUMBER 2381 671 ..... NOMINAL WORKING TEMPERATURE Tn (°C) Rmax. at Tn - 5 °C (Ω) Rmin. at Tn + 5 °C (Ω) LUG DEVICE 70 570 570 91202 80 550 1330 91203 90 550 1330 91204 100 550 1330 91205 110 550 1330 91206 120 550 1330 91207 130 550 1330 91209 140 550 1330 91212 150 550 1330 91214 ELECTRICAL CHARACTERISTICS PARAMETER VALUES 100 Ω Maximum resistance at 25 °C Maximum resistance at (Tn - 5) °C see Nominal Working Temperatures and Ordering Information table Minimum resistance at (Tn + 5) °C see Nominal Working Temperatures and Ordering Information table 4000 Ω Minimum resistance at (Tn + 15) °C Maximum voltage www.vishay.com 64 30 V (AC or DC) For technical questions, contact: nlr.europe@vishay.com Document Number: 29018 Revision: 19-Dec-07 2381 671 912../PTCSG..T....BE PTC Thermistors, For Temperature Protection Vishay BCcomponents CATALOG NUMBERS AND PACKAGING 12 NC SAP SPQ 2381 671 91202 PTCSGM3T071DBE 200 2381 671 91203 PTCSGM3T081DBE 200 2381 671 91204 PTCSGM3T091DBE 200 2381 671 91205 PTCSGM3T101DBE 200 2381 671 91206 PTCSGM3T111DBE 200 2381 671 91207 PTCSGM3T121DBE 200 2381 671 91209 PTCSGM3T131DBE 200 2381 671 91212 PTCSGM3T141DBE 200 2381 671 91214 PTCSGM3T151DBE 200 COMPONENT OUTLINES dimensions in millimeters 0.145 [3.68] dia hole 0.281 [7.14] 1.496 ± 0.157 [38 ± 4] 0.157 ± 0.039 [4 ± 1] 0.64 [16.26] max. 0.04 [1.016] Component outline for 2381 671 91202 to 91214 TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC 10 000 000 10 000 000 1 000 000 1 000 000 2381 671 91202 PTCSGM3T071DBE 2381 671 91205 PTCSGM3T101DBE 100 000 Resistance (Ω) Resistance (Ω) 100 000 2381 671 91203 PTCSGM3T081DBE 10 000 10 000 1000 1000 100 100 2381 671 91206 PTCSGM3T111DBE 2381 671 91204 PTCSGM3T091DBE 10 - 50 - 25 0 25 50 75 100 125 2381 671 91207 PTCSGM3T121DBE 150 10 - 50 - 25 Temperature (°C) Document Number: 29018 Revision: 19-Dec-07 For technical questions, contact: nlr.europe@vishay.com 0 25 50 75 100 125 150 175 Temperature (°C) www.vishay.com 65 2381 671 912../PTCSG..T....BE PTC Thermistors, For Temperature Protection Vishay BCcomponents 1 000 000 100 000 Resistance (Ω) 2381 671 91209 PTCSGM3T131DBE 10 000 2381 671 91212 PTCSGM3T141DBE 1000 100 2381 671 91214 PTCSGM3T151DBE 10 - 50 - 25 0 25 50 75 100 125 150 175 200 Temperature (°C) 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 (Rp) is lower than Rs (see Fig. 2), so the comparator's output voltage VO will be low. If an equipment overtemperature occurs, the PTC thermistor will quickly heat up to its trigger or nominal reference temperature Tn, whereupon its resistance will increase to a value much higher than Rs, causing VO to switch to a high level sufficient to activate an alarm, relay or power shutdown circuit. APPLICATION EXAMPLES Vo Rp Rs (R1 = R2) Rs R1 RL Vo Rf R2 θ Rp Rs (R1 = R2) PTC thermistor Rp trigger temperature Tn Fig. 1 Typical comparator circuit www.vishay.com 66 T (°C) Fig. 2 Typical switch characteristic For technical questions, contact: nlr.europe@vishay.com Document Number: 29018 Revision: 19-Dec-07 2381 671 912../PTCSG..T....BE PTC Thermistors, For Temperature Protection Vishay BCcomponents A θ θ θ θ θ θ θ As soon as one or more of the windings becomes too hot, the motor is switched off. The PTC thermistors located above the fluid level will be heated to a temperature greater than Tn. When immersed they are cooled such that their resistance value is reduced. Fig. 3 Temperature protection of electric motors Fig. 4 Liquid-level indication Document Number: 29018 Revision: 19-Dec-07 For technical questions, contact: nlr.europe@vishay.com www.vishay.com 67 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. 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 herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. 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. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1