PTC307C Series Vishay Cera-Mite PTC Thermistors Motor Start Pellets FEATURES * Rugged silver electrodes well suited for long life OEM pressure contact mounting * Various pellet sizes for optimum inrush current and switching time * Withstanding voltage is 2 times the maximum voltage rating * UL approved pellets * Compliant to RoHS directive 2002/95/EC APPLICATIONS * Single Phase motorstart assist in - Refrigerator systems QUICK REFERENCE DATA - Airconditioning systems PARAMETER VALUE UNIT Resistance value at 25 C 3.3 to 75 30 % 4 to 16 ARMS Switching times (typical) 0.25 to 1.0 s Maximum voltage rating 160 to 450 VRMS Operating temperature range - 10 to + 85 C Tolerance on resistance value Current ratings Storage temperature range - 25 to + 105 C - Heat-pumps - Small compressors * Inrush current generation DESCRIPTION These directly heated thermistors have a positive temperature coefficient and are primarily intended for inrush current generation. They consist of a high grade ceramic disk with two rugged pattern silver electrodes for contact pressure mounting. These ceramic pellets can be build into proprietary motor start devices for compressor, refrigerator and HVAC OEMs. MOUNTING The PTC thermistor pellets are suitable for pressure contact mounting in application specific housing assemblies. Examples of such assemblies can be found in the PTC305C series. Assembly housing must be appropriate for usage up to 180 C surface temperature of the PTC pellets. The pellets are not solderable. MARKING The pellets are not marked. Marking is available on request for customized parts. SAFETY AGENCY RECOGNITION Vishay Cera-Mite motor start PTC pellet thermistors are recognized by Underwriter Laboratories file E148885 in accordance with Standard for Thermistor Type Devices UL 1434; and Canadian Standards C22.2 No. 0-1991. www.vishay.com 1 For technical questions, contact: ceramitesupport@vishay.com Document Number: 22998 Revision: 11-Aug-10 PTC307C Series PTC Thermistors Motor Start Pellets Vishay Cera-Mite ELECTRICAL DATA AND ORDERING INFORMATION PART NUMBER PTC307C1674P PTC307C1700P PTC307C1711P PTC307C1668P PTC307C1644P PTC307C1651P PTC307C1720P PTC307C1411P PTC307C1484P PTC307C1544P PTC307C1399P PTC307C1489P PTC307C1476P PTC307C1530P PTC307C1531P PTC307C1282P PTC307C1533P PTC307C1292P PTC307C1487P PTC307C1529P PTC307C1545P PTC307C1640P PTC307C1740P PTC307C1024P PTC307C1409P PTC307C1410P R25 (1) 30 % () 5.0 6.8 10 5.0 6.8 10 20 3.3 4.7 5.6 6.8 10 12 15 22 33 47 68 3.9 12 14 30 30 38 50 75 RDYN (2) () 4.0 5.0 7.2 4.0 5.0 7.2 13 2.6 3.5 4.1 5.0 7.2 8.5 10.5 15 22 30 42 3.0 10.3 12 15.9 15.9 25 35 50 Vmeas. RDYN (VRMS) 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 50 100 100 240 240 240 240 240 MAX. VOLTAGE (3) (VRMS) 200 200 200 180 200 200 320 160 180 180 200 230 250 300 400 355 400 430 175 350 320 380 450 400 400 400 MAX. CURRENT (ARMS) 10 10 10 12 10 10 8 12 12 12 10 9 8.5 8 8 6 5 4 16 8 8 12 7 9 7.5 5.5 SIZE OxT (mm) UL (4) Tswitch (C) Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y 105 105 105 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 120 16 + 0.2/- 0.4 x 2.5 0.25 17.5 0.3 x 2.5 0.25 20 + 0.2/- 0.8 x 2.5 0.25 20 + 0.2/- 0.8 x 3.2 0.25 20 + 0.2/- 0.8 x 5.0 0.25 Notes (1) R = zero power resistance measured at < 0.5 V , standard tolerance 30 %, other tolerances and values on request. 25 DC (2) R DYN = nominal dynamic resistance during inrush, measured with Vmeas. applied, for information only. (3) The maximum voltage is the voltage that appears across the PTC in a motor start application. This is not the applied line voltage. Withstanding voltage of all UL approved types is minimum twice the specified maximum operating voltage. (4) UL recoginition following XGPU2 category of standard UL1434, file E148885. TYPICAL PTC CURRENT VS. TIME SHOWING DEFINITION OF RDYN AND SWITCH TIME (t) RDYN = 20 % peak current 0 0.1 Motor contactor closes h x V x (Tswitch - T0) I2PTC x RDYN h = Specific heatcapacity = 2.3 J/Kcm3 T0 = PTC temp. at time 0 V = PTC volume in cm3 (D/2)2T Vmeas. IPTC max. Switch time (t) 0.2 10 000 Current 10.0 1000 100 1.0 Switch time (t) 0.1 PTC Current (ARMS) Switch time t PTC Resistance () IPTC (ARMS) (Normalized) Peak current Resistance 10 0.3 0.4 0.5 0.6 0.7 0.8 Time to Switch (s) PTC switchout 50 100 PTC Temperature C 150 0.01 Solid ceramic disc Base electrode D Silver electrode T Document Number: 22998 Revision: 11-Aug-10 for technical questions, contact: ceramitesupport@vishay.com www.vishay.com 2 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. 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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. Revision: 12-Mar-12 1 Document Number: 91000