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PTC thermistors for overcurrent protection
SMDs, EIA size 1210, 24 V, 63 V and 230 V
Series/Type: Date:
B5960*, B59707, B59807, B59907 April 2007
(c) EPCOS AG 2007. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited.
Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
Applications Overcurrent protection Short-circuit protection Features Thermistor chip with lead-free tinned terminations Small size Short response times Suitable for reflow soldering only Suitable for automatic placement RoHS-compatible Delivery mode Blister tape, 180-mm reel
Dimensional drawing
Dimensions in mm
Geometry of solder pad
Recommended maximum dimensions (mm)
General technical data Switching cycles Tolerance of RR Tolerance of RR Operating temperature range Operating temperature range Operating temperature range N RR RR Top Top Top 100 25 35 40/+125 0/+60 40/+85
(for A606, A607, A707, A807) (for A907) (V = 0) (V = Vmax, for A606/607, A707/807) (V = Vmax, for A907)
% % C C C
Please read Cautions and warnings and Important notes at the end of this document.
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Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
Electrical specifications and ordering codes Type IR 1) mA IS1) mA ISmax (V = Vmax) A Tref C RR 27 55 125 400 1500 Rmin 17 30 75 200 640 B59606A0110A062 B59607A0120A062 B59707A0120A062 B59807A0090A062 B59907A0120A062 Ordering code
Vmax = 30 VDC or VAC , VR = 24 VDC or VAC A606 90 180 0.5 110 A607 70 130 0.4 120 Vmax = 80 VDC or VAC , VR = 63 VDC or VAC A707 50 90 0.3 120 Vmax = 265 VDC or VAC , VR = 230 VDC or VAC A807 15 40 0.2 90 Vmax = 400 VDC or VAC , VR = 230 VDC or VAC A907 12 22 0.15 125
1)
Measured on component soldered to standardized PCB
Please read Cautions and warnings and Important notes at the end of this document.
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Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
Reliability data Test Electrical endurance, cycling Electrical endurance, constant Damp heat Standard IEC 60738-1 IEC 60738-1 IEC 60738-1 Test conditions Room temperature, ISmax; Vmax Number of cycles: 100 Storage at Vmax /Top Test duration : 1000 h Temperature of air: 40 C Relative humidity of air: 93% Duration: 56 days Test according to IEC 60068-2-78 T = TLCT, T = TUCT Number of cycles: 5 Test duration: 30 min Test according to IEC 60068-2-14, Test Na Frequency range: 10 to 55 Hz Displacement amplitude: 0.75 mm Test duration: 3 * 2 h Test according to IEC 60028-2-6, Test Fc Pulse shape: half-sine Acceleration: 50 g Pulse duration: 1 ms; 6 * 3 pulses Test according to IEC 60068-2-29 Dry heat: T = TUCT Test duration: 16 h Damp heat first cycle Cold: T = TLCT Test duration: 2 h Damp heat 5 cycles Tests performed according to IEC 60068-2-30 Components reflow-soldered to test board Maximum bending: 2 mm R25/R25 < 25% < 25% < 10%
Rapid change of temperature
IEC 60738-1
< 10%
Vibration
IEC 60738-1
< 5%
Bump
IEC 60738-1
< 5%
Climatic sequence
IEC 60738-1
< 10%
Bending test
EN 130000/4.35
< 10%
Please read Cautions and warnings and Important notes at the end of this document.
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Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
Characteristics (typical) for A606, A607 and A707 PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage) Switching time tS versus switching current IS (measured at 25 C in still air)
Rated current IR versus ambient temperature TA (measured in still air)
Please read Cautions and warnings and Important notes at the end of this document.
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Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
Characteristics (typical) for A807 PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage)
Switching time tS versus switching current IS (measured at 25 C in still air)
Rated current IR versus ambient temperature TA (measured in still air)
Please read Cautions and warnings and Important notes at the end of this document.
Page 6 of 10
Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
Characteristics (typical) for A907 PTC resistance RPTC versus PTC temperature TPTC (measured at low signal voltage)
Switching time tS versus switching current IS (measured at 25 C in still air)
Rated current IR versus ambient temperature TA (measured in still air)
Please read Cautions and warnings and Important notes at the end of this document.
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Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
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 before storage. 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 6 months after delivery. Handling PTCs must not be dropped. Chip-offs must not be caused during handling of PTCs. 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. 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 of the clamping contacts pressing against the PTC must be 10 N. 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.
Please read Cautions and warnings and Important notes at the end of this document. Page 8 of 10
Overcurrent protection SMDs, EIA size 1210, 24 V, 63 V and 230 V A606/607, A707, A807, A907
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).
Please read Cautions and warnings and Important notes at the end of this document.
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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, EPCOS is 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 an EPCOS 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 passive 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 a passive 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 a passive 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.epcos.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. 6. Unless otherwise agreed in individual contracts, all orders are subject to the current version of the "General Terms of Delivery for Products and Services in the Electrical Industry" published by the German Electrical and Electronics Industry Association (ZVEI). 7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSSP, MLSC, MotorCap, PhaseCap, PhaseMod, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMID, SIOV, SIP5D, SIP5K, WindCap are trademarks registered or pending in Europe and in other countries. Further information will be found on the Internet at www.epcos.com/trademarks.
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