SMD NTC Thermistors for General-Use 2016 SMD NTC Thermistors for General-Use 2016 Application examples for SMD NTC thermistors Industrial and medical thermometers Thermostats Wheatstone bridge circiut LEDs No discoloration EPCOS Sample Kit 2016 No reduction in lumens Extension of life time Performance efficiency optimization SMD NTC Thermistors Optimum design (reduction in number of LEDs) Temperature Measurement and Compensation for General-Use Thermal connection with a NTC on LED Battery packs Detects temperature rises of the battery cell during charging Detects the ambient temperature for optimized charging Detects heat generation of a battery cell caused by abnormal current Performs temperature compensation for voltage measurement for display of the remaining amount of energy Charging control unit of a battery pack using NTC thermistors as temperature sensor LCD displays LCDs are sensitive to temperature and have a limited operating temperature range LCD contrast increases with temperature, wasting power at high temperatures Low temperatures lead to low contrast LCD modules often use temperature compensation circuits with NTC thermistors and resistors EPCOS AG A TDK Group Company LCD using a NTC thermistor as temperature sensor Edition 08/2016 Ordering No. B57999V2999J199 Printed in Germany SO 0816.5 www.epcos.comTemperature measurement and compensation Components Product range NTC (negative temperature coefficient) thermistors are thermally sensitive semiconductor resis- B57230 B57221 B57261 B57221 B57250 B57250 V2103F260 V2103J060 V2223J060 V2473J060 V2473F560 V2104F360 tors which show a decrease in resistance as temperature increases. At 2%/K to 6%/K, the Electrical specifications and ordering codes negative temperature coefficients of resistance are about ten times greater than those of metals R DR /R B B B Ordering code 25 R R 25/50 25/85 25/100 and about five times greater than those of silicon temperature sensors. NTC thermistors are simple yet very sensitive and accurate sensing elements for measuring and control circuits. kV % K K K EIA case size 0402 Features 10 1, 5 3380 3435 3455 1% B57230V2103+260 10 5 3940 3980 4000 3% B57221V2103J060 Superior performance in high-stability applications 22 5 4473 4548 4575 3% B57261V2223J060 Accurate temperature sensing up to +125 C 47 5 3940 3980 4000 3% B57221V2473J060 Excellent long-term aging stability in high temperature environment 47 1, 3, 5 4050 4108 4131 1% B57250V2473+560 Short response time 100 1, 3, 5 4250 4311 4334 1% B57250V2104+360 All SMD NTC thermistors are listed under UL (file number E69802) EIA case size 0603 Alternative ratings available on request, e.g. resistance and B value 10 1, 5 3380 3435 3455 1% B57330V2103+260 10 3, 5 3940 3980 4000 3% B57321V2103+060 B57330 B57321 B57371 B57371 B57357 B57374 B57350 B57371 Applications V2103F260 V2103J060 V2223J060 V2473J060 V2473F560 V2104J060 V2104F460 V2474J060 22 3, 5 4386 4455 4480 3% B57371V2223+060 Displays 47 3, 5 4386 4455 4480 3% B57371V2473+060 Smartphones and wearable devices 47 1, 3, 5 4050 4108 4131 1.5% B57357V2473+560 Heating and air-conditioning, radiator cooling fan control units, thermostats 47 3, 5 4050 4108 4131 2% B57358V2473+560 Household electronics, e.g. refrigerators, washing machines, water boilers 100 3, 5 4386 4455 4480 1% B57374V2104+060 Battery management systems 100 1, 3, 5 4200 4260 4282 1% B57350V2104+460 Healthcare 100 3, 5 4250 4311 4334 2% B57358V2104+360 Smart metering 470 3, 5 4386 4455 4480 3% B57371V2474+060 Electronic control unit EIA case size 0805 Industrial automation 1 3, 5 3940 3980 4000 3% B57421V2102+062 Security and safety 10 3, 5 3590 3635 3650 3% B57401V2103+062 Lighting, e.g. LED lighting modules, LED retrofit bulbs and tubes 10 3, 5 3940 3980 4000 3% B57421V2103+062 10 3, 5 4386 4455 4480 3% B57471V2103+062 A short presentation with more details and applications examples can be found under: 22 3, 5 4386 4455 4480 3% B57471V2223+062 www.epcos.com/smdntc gu 47 3, 5 4386 4455 4480 3% B57471V2473+062 B57421 B57401 B57421 B57471 B57471 B57471 B57471 B57471 V2102J062 V2103J062 V2103J062 V2103J062 V2223J062 V2473J062 V2104J062 V2474J062 100 3, 5 4386 4455 4480 3% B57471V2104+062 470 3, 5 4386 4455 4480 3% B57471V2474+062 + = Resistance tolerance: F = 1% H = 3% J = 5% Important information: 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. We expressly point out that these statements cannot be regarded as binding statements about the suitability of our products for a particular customer application. It is incumbent on the customer to check and decide whether a product is suitable for use in a particular application. This publication is only a brief product survey which may be changed from time to time. Our products are described in detail in our data sheets. The Important notes (www.epcos.com/ImportantNotes) and the product-specific Cautions and warnings must be observed. All relevant information is available through our sales offices.