B59549A135A20

PTC thermistors Series/Type: A550, A548, A546, A556 The following products presented in this data sheet are being withdrawn. Ordering Code B59556A0135A020 B59550A0135A020 B59548A0135A020 Substitute Product Date of Withdrawal 2019-03-01 2019-03-01 2019-03-01 Deadline Last Orders 2019-06-07 2019-06-07 2019-06-07 Last Shipments 2019-09-07 2019-09-07 2019-09-07 Ordering Code B59546A0135A020 Substitute Product Date of Withdrawal 2019-03-01 Deadline Last Last Orders Shipments 2019-06-07 2019-09-07 Please contact your nearest TDK sales office if you need support in selecting a suitable substitute. The addresses of our worldwide sales network are presented at www.tdkelectronics.tdk.com/sales. Motor starting Low power consumption Applications Time delay in turning off the auxiliary winding of single-phase AC motors Dimensional drawing Features Metallization: CrNi (sputtered) + Ag (screen-printed) Excellent long-term reliability Suitable for clamp contacting For approvals see table below RoHS-compatible Delivery mode Bulk General technical data Switching cycles Operating temperature range Operating temperature range (V = 0) (V = Vmax) N Top Top > 100000 +5/+80 +5/+80 °C °C Electrical specifications and ordering codes Type 0.45 0.30 > 360 > 400 4.70 ±20% 6.80 ±20% B59546A0135A020 B59548A0135A020 0.25 0.30 0.25 0.35 > 710 > 640 > 700 > 600 47 ±20% 22 ±20% 33 ±20% 15 ±20% B59551A0135A020 B59549A0135A020 B59550A0135A020 B59556A0135A020 tS1) VBD2) V s 180 200 135 135 400 350 355 350 135 135 135 135 Vmax A VR = 120 VRMS A546 12 A548 12 VR = 230 VRMS A551 5 A549 8 A550 8 A556 8 Ordering code V RR ±∆RR (VPTC ≤ 2.5 V) Ω Tref (typ.) °C Imax 1) Measured at V = Vmax and I = 0.8  Imax 2) PTC clamped between crown contacts (diameter: 2 mm). Please read Cautions and warnings and Important notes at the end of this document. Page 2 of 9 Motor starting Low power consumption Approvals Type UL IECQ VDE A546 X X X A548 X  X   A549 A550 X X X A551 X   A556 X X X  UL approval to UL 1434 (file number E69802) IECQ certified in accordance with IEC 60738-1 (certificate number 101-QA-5) VDE approval (certificate number 87406) Reliability data Test1) Electrical endurance, cycling Electrical endurance, constant Damp heat Standard IEC 60738-1 Rapid change of temperature IEC 60738-1 Climatic sequence IEC 60738-1 IEC 60738-1 IEC 60738-1 Test conditions Room temperature, Vmax; Imax Number of cycles: 100 000 Storage at Vmax and Top,max (@ Vmax) Test duration: 1000 h Temperature of air: 40 °C Relative humidity of air: 93% Duration: 56 days Test according to IEC 60068-2-78 T1 = Top,min (0 V), T2 = Top,max (0 V) Number of cycles: 5 Test duration: 30 min Test according to IEC 60068-2-14, test Na Dry heat: T = Top,max (0 V) Test duration: 16 h Damp heat first cycle Cold: T = Top,min (0 V) Test duration: 2 h Damp heat 5 cycles Tests performed according to IEC 60068-2-30 1) For testing all PTC thermistor disks are equiped with an EPCOS housing. Please read Cautions and warnings and Important notes at the end of this document. Page 3 of 9 ∆R25/R25 < 25% < 25% < 20% < 20% < 25% Motor starting Low power consumption Cautions and warnings General EPCOS thermistors are designed for specific applications and should not be used for purposes not identified in our specifications, application notes and data books unless otherwise agreed with EPCOS during the design-in-phase. Ensure suitability of thermistor through reliability testing during the design-in phase. The thermistors should be evaluated taking into consideration worst-case conditions. Storage Store thermistors only in original packaging. Do not open the package prior to processing. Storage conditions in original packaging: storage temperature 25 °C ... +45 °C, relative humidity ≤75% annual mean, maximum 95%, dew precipitation is inadmissible. Avoid contamination of thermistors surface during storage, handling and processing. Avoid storage of thermistor in harmful environment with effect on function on long-term operation (examples given under operation precautions). Use thermistor within the following period after delivery:  Through-hole devices (housed and leaded PTCs): 24 months  Motor protection sensors, glass-encapsulated sensors and probe assemblies: 24 months  Telecom pair and quattro protectors (TPP, TQP): 24 months  Leadless PTC thermistors for pressure contacting: 12 months  Leadless PTC thermistors for soldering: 6 months  SMDs in EIA sizes 3225 and 4032, and for PTCs with metal tags: 24 months  SMDs in EIA sizes 1210 and smaller: 12 months Handling PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs. The ceramic and metallization of the components must not be touched with bare hands. Gloves are recommended. Avoid contamination of thermistor surface during handling. Soldering (where applicable) Use rosin-type flux or non-activated flux. Insufficient preheating may cause ceramic cracks. Rapid cooling by dipping in solvent is not recommended. Complete removal of flux is recommended. Standard PTC heaters are not suitable for soldering. Please read Cautions and warnings and Important notes at the end of this document. Page 4 of 9 Motor starting Low power consumption Mounting Electrode must not be scratched before/during/after the mounting process. Contacts and housing used for assembly with thermistor have to be clean before mounting. Especially grease or oil must be removed. When PTC thermistors are encapsulated with sealing material, the precautions given in chapter "Mounting instructions", "Sealing and potting" must be observed. When the thermistor is mounted, there must not be any foreign body between the electrode of the thermistor and the clamping contact. The minimum force and pressure of the clamping contacts pressing against the PTC must be 10 N and 50 kPa, respectively. In case the assembly is exposed to mechanical shock and/ or vibration this force should be higher in order to avoid movement of the PTC during operation. During operation, the thermistor’s surface temperature can be very high. Ensure that adjacent components are placed at a sufficient distance from the thermistor to allow for proper cooling at the thermistors. Ensure that adjacent materials are designed for operation at temperatures comparable to the surface temperature of thermistor. Be sure that surrounding parts and materials can withstand this temperature. Avoid contamination of thermistor surface during processing. Operation Use thermistors only within the specified temperature operating range. Use thermistors only within the specified voltage and current ranges. Environmental conditions must not harm the thermistors. Use thermistors only in normal atmospheric conditions. Avoid use in deoxidizing gases (chlorine gas, hydrogen sulfide gas, ammonia gas, sulfuric acid gas etc), corrosive agents, humid or salty conditions. Contact with any liquids and solvents should be prevented. Be sure to provide an appropriate fail-safe function to prevent secondary product damage caused by abnormal function (e.g. use VDR for limitation of overvoltage condition). This listing does not claim to be complete, but merely reflects the experience of EPCOS AG. Display of ordering codes for EPCOS products The ordering code for one and the same EPCOS product can be represented differently in data sheets, data books, other publications, on the EPCOS website, or in order-related documents such as shipping notes, order confirmations and product labels. The varying representations of the ordering codes are due to different processes employed and do not affect the specifications of the respective products. Detailed information can be found on the Internet under www.epcos.com/orderingcodes Please read Cautions and warnings and Important notes at the end of this document. Page 5 of 9 Motor starting Low power consumption Symbols and terms Symbol A C Cth f I Imax IR Ires IPTC Ir Ir,oil Ir,air IRMS IS ISmax LCT N Nc Nf P P25 Pel Pdiss RG Rmin RR ∆RR RP RPTC Rref RS R25 R25,match ∆R25 Term Area Capacitance Heat capacity Frequency Current Maximum current Rated current Residual current PTC current Residual currrent Residual currrent in oil (for level sensors) Residual currrent in air (for level sensors) Root-mean-square value of current Switching current Maximum switching current Lower category temperature Number (integer) Operating cycles at Vmax, charging of capacitor Switching cycles at Vmax, failure mode Power Maximum power at 25 °C Electrical power Dissipation power Generator internal resistance Minimum resistance Rated resistance @ rated temperature TR Tolerance of RR Parallel resistance PTC resistance Reference resistance Series resistance Resistance at 25 °C Resistance matching per reel/ packing unit at 25 °C Tolerance of R25 Please read Cautions and warnings and Important notes at the end of this document. Page 6 of 9 Motor starting Low power consumption T t TA ta TC tE TR Tsense Top TPTC tR Tref TRmin tS Tsurf UCT V or Vel Vc(max) VF,max VRMS VBD Vins Vlink,max Vmax Vmax,dyn Vmeas Vmeas,max VR VPTC α ∆ δth τth λ Temperature Time Ambient temperature Thermal threshold time Ferroelectric Curie temperature Settling time (for level sensors) Rated temperature @ 25 °C or otherwise specified in the data sheet Sensing temperature Operating temperature PTC temperature Response time Reference temperature Temperature at minimum resistance Switching time Surface temperature Upper category temperature Voltage (with subscript only for distinction from volume) Maximum DC charge voltage of the surge generator Maximum voltage applied at fault conditions in protection mode Root-mean-square value of voltage Breakdown voltage Insulation test voltage Maximum link voltage Maximum operating voltage Maximum dynamic (short-time) operating voltage Measuring voltage Maximum measuring voltage Rated voltage Voltage drop across a PTC thermistor Temperature coefficient Tolerance, change Dissipation factor Thermal cooling time constant Failure rate Lead spacing (in mm) Please read Cautions and warnings and Important notes at the end of this document. Page 7 of 9 Important notes The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products for certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. As a rule we are either unfamiliar with individual customer applications or less familiar with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether a product with the properties described in the product specification is suitable for use in a particular customer application. 2. We also point out that in individual cases, a malfunction of electronic components or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in customer applications in which the malfunction or failure of an electronic component could endanger human life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the customer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy certain technical requirements, some of the products described in this publication may contain substances subject to restrictions in certain jurisdictions (e.g. because they are classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet (www.tdk-electronics.tdk.com/material). Should you have any more detailed questions, please contact our sales offices. 5. We constantly strive to improve our products. Consequently, the products described in this publication may change from time to time. The same is true of the corresponding product specifications. Please check therefore to what extent product descriptions and specifications contained in this publication are still applicable before or when you place an order. We also reserve the right to discontinue production and delivery of products. Consequently, we cannot guarantee that all products named in this publication will always be available. The aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products. 6. Unless otherwise agreed in individual contracts, all orders are subject to our General Terms and Conditions of Supply. 7. Our manufacturing sites serving the automotive business apply the IATF 16949 standard. The IATF certifications confirm our compliance with requirements regarding the quality management system in the automotive industry. Referring to customer requirements and customer specific requirements (“CSR”) TDK always has and will continue to have the policy of respecting individual agreements. Even if IATF 16949 may appear to support the acceptance of unilateral requirements, we hereby like to emphasize that only requirements mutually agreed upon can and will be implemented in our Quality Management System. For clarification purposes we like to point out that obligations from IATF 16949 shall only become legally binding if individually agreed upon. Page 8 of 9 Important notes 8. The trade names EPCOS, CeraCharge, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CTVS, DeltaCap, DigiSiMic, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD, MKK, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PowerHap, PQSine, PQvar, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, ThermoFuse, WindCap are trademarks registered or pending in Europe and in other countries. Further information will be found on the Internet at www.tdk-electronics.tdk.com/trademarks. Release 2018-10 Page 9 of 9