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 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 QUICK REFERENCE DATA PARAMETER • Compliant to RoHS directive 2002/95/EC accordance to WEEE 2002/96/EC VALUE UNIT Maximum resistance at 25 °C 100 Ω Minimum resistance at (Tn + 15) °C 4000 Ω APPLICATIONS 30 V Over-temperature protection and control in: - 20 to (Tn + 15) °C Maximum voltage Temperature range and in • Industrial electronics • Power supplies • Electronic data processing Weight: 91102 to 91114 ≈ 0.08 g 91152 to 91164 ≈ 0.11 g Climatic category 25/125/56 • 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 CATALOG NUMBER 2381 671 ..... Tn (°C) RESISTANCE from - 20 °C to Tn - 20 °C (Ω) RESISTANCE at Tn - 5 °C (Ω) RESISTANCE at Tn + 5 °C (kΩ) 70 30 to 250 50 to 570 80 30 to 250 90 LEADED DEVICE COLOR CODE NORMAL LEADS LONG LEADS 0.570 to 50 91102 91152 Black 50 to 550 1.33 to 50 91103 91153 Brown 30 to 250 50 to 550 1.33 to 50 91104 91154 Red 100 30 to 250 50 to 550 1.33 to 50 91105 91155 Orange 110 30 to 250 50 to 550 1.33 to 50 91106 91156 Yellow 120 30 to 250 50 to 550 1.33 to 50 91107 91157 Green 130 30 to 250 50 to 550 1.33 to 50 91109 91159 Blue 140 30 to 250 50 to 550 1.33 to 50 91112 91162 Violet 150 30 to 250 50 to 550 1.33 to 50 91114 91164 Grey www.vishay.com 60 For technical questions, contact: [email protected] 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 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 + 15) °C 4000 Ω Minimum resistance at (Tn + 5) °C See Nominal Working Temperatures and Ordering Information table Maximum voltage 30 V (AC or DC) CATALOG NUMBERS AND PACKAGING 12NC SAP 12NC SAP SPQ 2381 671 91102 PTCSL20T071DBE 2381 671 91152 PTCSL40T071DBE 500 2381 671 91103 PTCSL20T081DBE 2381 671 91153 PTCSL40T081DBE 500 2381 671 91104 PTCSL20T091DBE 2381 671 91154 PTCSL40T091DBE 500 2381 671 91105 PTCSL20T101DBE 2381 671 91155 PTCSL40T101DBE 500 2381 671 91106 PTCSL20T111DBE 2381 671 91156 PTCSL40T111DBE 500 2381 671 91107 PTCSL20T121DBE 2381 671 91157 PTCSL40T121DBE 500 2381 671 91109 PTCSL20T131DBE 2381 671 91159 PTCSL40T131DBE 500 2381 671 91112 PTCSL20T141DBE 2381 671 91162 PTCSL40T141DBE 500 2381 671 91114 PTCSL20T151DBE 2381 671 91164 PTCSL40T151DBE 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: [email protected] 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 TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC FOR 2381 671 91102/91103 and 91104 106 106 1.5 V (DC) max. 1.5 V (DC) max. Tn = 100 °C 105 105 Tn = 110 °C Resistance (Ω) Resistance (Ω) Tn = 120 °C 104 103 104 103 Tn = 90 °C 102 102 Tn = 80 °C Tn = 70 °C 10 10 0 50 100 150 200 250 0 50 Temperature (°C) TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC FOR 2381 671 91109 200 250 TYPICAL RESISTANCE/TEMPERATURE CHARACTERISTIC FOR 2381 671 91112 and 91114 106 106 1.5 V (DC) max. 1.5 V (DC) max. 105 105 104 104 Resistance (Ω) Resistance (Ω) 100 150 Temperature (°C) 103 103 102 102 Tn = 150 °C Tn = 140 °C Tn = 130 °C 10 0 50 100 150 200 250 10 0 50 www.vishay.com 62 100 150 200 250 Temperature (°C) Temperature (°C) For technical questions, contact: [email protected] 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 (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 R1 Rs Rp > Rs (R1 = R2) RL VO Rp < Rs (R1 = R2) Rf R2 +θ PTC thermistor Rp Trigger temperature Tn Fig. 1 Typical comparator circuit 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: [email protected] www.vishay.com 63 Legal Disclaimer Notice www.vishay.com 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 purpose, non-infringement and merchantability. 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