Disc Type NTC Thermistors

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Disc Type NTC Thermistors Type: ERTD The ÒType ERTDÓ are disc type negative temperature coefficient thermistors. Resistances are available from 8 W to 150 kw and B Values are from 3000 K to 5000 K.

1 Disc Type NTC Thermistors Type: ERTD The ÒType ERTDÓ are disc type negative temperature coefficient thermistors. Resistances are available from 8 W to 150 kw and B Values are from 3000 K to 5000 K. The thermistors are designed for temperature detections and temperature compensations etc., featuring excellent electrical and thermal stability. n Features l Wide selection of temperature coefficient l Excellent electrical and thermal stability n Recommended Applications l Temperature detection l Temperature compensation for measuring instruments l Temperature compensation for deflection coil in TV n Explanation of Part Numbers E R T D n Derating Curve for the NTC Thermistor For the NTC Thermistor operated in ambient temperatures above 25 ûc, power rating should be derated in accordance with the figure on the right. Rated Load (%) Ambient Temperature ( C)

2 n Ratings and Characteristics Zero-Power B Value ]] Maximum Heat Thermal Time Resistance Table Part No. Resistance (K) Permissible Dissipation Constant Ratio A/B at 25 C(W) Power(W) Constant (s) R (mw/ C) 25/R 50 Curve No. ERTD2FEL ] 200S Ñ ERTD2FFL ] 400S Ñ ERTD2FGL ] 750S ERTD2FFL ] 101S Ñ ERTD2FGL ] 101S ERTD2FGL ] 171S ERTD2FFL ] 251S Ñ ERTD2FGL ] 251S ERTD2FGL ] 301S Ñ ERTD2FFL ] 351S ERTD2FGL ] 601S ERTD2FGL ] 801S ERTD2FGL ] 102S Ñ ERTD2FGL ] 142S Ñ ERTD2FGL ] 202S ERTD2FGL ] 332S ERTD2FHL ] 462S Ñ ERTD2FHL ] 802S ERTD2FHL ] 103S Ñ ERTD2FHL ] 153S ERTD2FHL ] 333S ERTD2FHL ] 503S ERTD2FIL ] 154S ERTD3FEL ] 8R0S ERTD3FFL ] 130S ERTD3FFL ] 160S Ñ ERTD3FFL ] 200S Ñ ERTD3FFL ] 300S Ñ ERTD3FFL ] 400S Ñ ERTD3FGL ] 750S Ñ ERTD3FGL ] 800S Ñ ERTD3FGL ] 131S Ñ ERTD3FGL ] 501S Ñ ERTD3FHL ] 402S Ñ ERTD3FHL ] 203S Ñ ERTD3FIL ] 803S ] Resistance Tolerance Code J K L 5 % 10 % 15 % ]] Tolerance of ÒB valueó: 10 % kn (R 25 /R 50 ) R 25 =Resistance at 25.0 C B= 1/298.15Ð1/ R 50 =Resistance at 50.0 C l Operating Temperature Range: Ð30 to +125 C

3 n Dimensions in mm (not to scale) Straight Lead Type F Type Crimped Lead Type Z Type F Type fd T k W fd D min D min Z Type fd T u e h W fd D max. 6.0 max D (nom.2.5) (nom.5.0) n Resistance vs. Temperature (Table A) n Voltage vs. Current (Table B)

4 n Resistance Color Code Code Color 1(1st Digit) 2(2nd Digit) 3(Multiplier) Black Brown Red Orange Yellow Green Blue Purple Gray White Gold Ñ Ñ 10 Ð1 Silver Ñ Ñ 10 Ð2 n Taping Dimensions in mm (not to scale) Taping Type P P P P fd F Æh 05.0 W Ð0.5 W min. W Ð0.50 W max H H k 2.0 max. fd t

5 Disc Type NTC Thermistors Handling Precautions Safety Precautions The Disc Type NTC Thermistors (hereafter referred to as ÒThe NTC ThermistorsÓ) may fail through burnout, flaming or glowing in the worst case, when subjected to severe conditions of electrical, environmental and/or mechanical stresses. The following Ò Safety Precautions Ó and ÒApplication Notes" should be studied carefully by you. If you have a questionabout the Handling Precautions, please contact our engineering section or factory. 1. Safety Precautions 1.1 Operating Power The NTC Thermistors, should not be operated beyond the specified Maximum Permissible Power in the Catalog or the individual Specifications, otherwise, burnout and damages due to thermal run away may result. (if operated in ambient temperatures above 25 C, power rating should be derated in accordance with the derating curve.) 1.2 Operating Temperature Range The NTC Thermistors should not be operated beyond the specified Operating Temperature Range in the Catalog or the individual Specifications. (Do not touch the heated part of the NTC Themistors by hand at large power consumption.) 1.3 Plastic Molding and Potting In the case of plastic molding or potting, the NTC Thermistors may be damaged or deteriorate due to extremely large mechanical stresses such as expanding and shrinking forces caused by the heat treatment of the plastics applied, depending on curing conditions and type of plastics. 1.4 Environmental Conditions The NTC Thermistors should not be operated and/or stored under following environmental conditions; a) Exposed directly to water or drops of water. b) Exposed directly to sunlight. c) Conditions of dew formation. d) Exposed directly to oil, gasoline or organic solvent and/or atmospheres of them. e) Conditions of deoxidized or corrosive atmospheres such as chlorine, hydrogen sulfide, sulphur oxide and cracked gas from vinyl chloride etc. f) Severe conditions of extreme vibration or shock. 1.5 Mounting DonÔt touch other parts to the thermistor, because the outer coating may not provide insulation after mounting the thermistor. 1.6 Fail-Safe Design for Equipment In applications using Thermistors, of the Thermistors. equipment should be protected against deterioration and failure 2.Application Notes 2.1 Soldering Flux Rosin-based and non-activated type soldering flux is recommended. 2.2 Post Soldering Cleaning In the case of solvent cleaning, outer coating material of the NTC Thermistors may melt in the solvent, depending on the cleaning condition and type of cleaning solvent. 2.3 Abnormal Mechanical Stresses The NTC Thermistors may be damaged or deteriorate when dropped or exposed to a large impact. Excessive shock and impact shall not be applied. 2.4 Soldering (1) When soldering thermistors, the soldering time should be as short as possible to minimize the exposure time of the element to the melting point of solder. Take into account the solder-heat resistance of the product before use. (2) In soldering the device, the body and outer coating section should not be touched by molten solder and/or heated iron tip. 2.5 Long Term Storage (1) The NTC Thermistors should not be stored under severe conditions of high temperature and high humidity. (2) The NTC Thermistors should not be stored under conditions of corrosive atmospheres such as hydrogen sulfide, surfur oxide and chlorine and ammonia etc. (3) The NTC Thermistors should not be exposed to direct sunlight. (4) The NTC Thermistors should not be stored under conditions of dew formation. (5) Store them indoors under 40 C max. and 75 %RH max. Use them within one year and check the solderability before use.

NTC Thermistors for automotive devices (chip type)

NTC Thermistors for automotive devices (chip type) Multilayer NTC Thermistors Series: ERTJ Handling Precautions Safety Precautions The, hereafter referred to as Thermisotrs, is designed for use in automotive devices. When subjected to severe electrical,