1. Low voltage overcurrent protection 2. Low resistance and power dissipation 3. Self¬\resetting; no need for replacement after fault condition.
Please visit our website to check the detail specification of our NTC series. Custom made.
Application: Electronic thermometer, medical devices Features: Quick thermal sensing response and high delicacy High resistance precision and good coherence High working stability and reliability Small size and light weight
Introduction: Tjd series are insulation film ntc thermistors, our latest product developed with innovative technique, designed for the purpose of temperature detection, control and compensation of electric and electronic products. Application: Computer, printer, and home electric appliances, etc. unting on printed circuit board.
Ntc thermistor Introduction: Mf58 series are purified glass wrapped diode thermistors with two terminals extending axially, processed with the combination of ceramic and semiconductor techniques. Application: , integrate circuits, quartz crystal oscillators and thermocouples. -- for liquid level display and flow rate measurement, and cell phone battery. Features: Wide range of resistance with high resistance precision: 0.1-1000k¬+ Usable in high-temperature and high-moisture environments due to the glass wrapping small, light, firm, and convenient for automation mounting on printed circuit board Quick response to thermal sensing with high sensitivity High working stability and reliability
Ptc thermistors for delayed start of lamps and ballast
1.Wide operating temperature range: -40 to +300íµ 2.Dielectric strength: 1, 500v ac for one second 3.Short thermal response time in water, high stability in moisture 4.Suitable for use in high-temperature and moisture environments 5.High accuracy, small dimensions, different tolerancr available , cost-effective 6.Ul approval , rohs compliant 7.Climatic category:iec60068-1 8.Resistance tolerance ú¦ía1%í½ía10% 9.Insulation resistance: í²100mª+ 10.Dissipation constant:min. 3mw/íµú¿still airú¬ 11.Thermal time constant : 8 seconds max (still air) 12.Thermal time constant : 2 seconds max (stirred liquid) 13.Moisture resistance:(40íµ 95% rh)1000 hours R valueú¦10k-5000k B valueú¦3435, 3950, 3977, 3899, , 4050, 4020 etc. Precisionú¦+/-1%--+/-10%
1.Fast response , high sensitive. 2.Glass sealing, able to stand for low temperature 3.Coaxial structure makes it easy to install and can stand for high temperature R value :10k--5000k B value :3950, 3899, 4020, 4050, 4200, etc. Precisionú¦+/-1%--+/-10%.
1.Fast response , high sensitive. 2.Glass sealing, able to stand for low temperature 3.Coaxial structure makes it easy to install and can stand for high temperature R value :10k--5000k B value :3950, 3899, 4020, 4050, 4200, etc. Precisionú¦+/-1%--+/-10%
Ptc thermistor Ptc thermsitor for electric motor winding protection.
PTC thermistor Used for over heat protection of various equipment & motors Available for switching temperatures from 60 deg c to 190 deg c PTCs in single, double and triple versions can be supplied Weight is approximately 5 gm per single piece The PTC thermistor has a diameter of 3 mm
PTC thermistors current protector, also called PTC thermistor resettable fuses, protect load against over-current, overload, short circuit. No need for replacement, resume protective function after a short cooling-down time. Ceramic PTC (positive temperature coefficient) thermistors are used instead of conventional fuses to protect load, such as motors, transformers, or electronic circuit, against overcurrent for circuit protection. PTC thermistor protector not only respond to inadmissibly high currents but also if a preset temperature limit is exceeded. PTC thermistor over-current protector limits the power dissipation of the whole circuit by increasing their resistance and thus reducing the current to a harmless residual value. In contrast to conventional fuses, PTC thermistor resettable fuses do not have to be replaced after elimination of the fault but resume their protective function immediately after a short cooling-down time. PTC Thermistor Over-current Protector Application It applies in the over-current overload and short circuit protection of transformers, battery charger, switches, switch power supply, adaptor, meter, instrumentation, apparatus, electronic coils, control panels, air conditioner, automotive electron, etc. Operating Principle of PTC Thermistor for Overload Over-current Protection The operating principle is as indicated in the following. When a circuit is in the normal status, the current through PTC is lower than the rated current and PTC thermistor protector is in the normal state with small resistance value, which will not affect the normal operation of the protected circuit. In case of some fault in the circuit and the current is greater than the rated current, the PTC thermistor protector will become hot quickly and present a high resistance state, which sets the circuit relatively "off" to protect the circuit from damage. After the fault is removed, PTC thermistor protector will automatically restore its low resistance state and the circuit will resume normal operation. Normally, when PTC thermistor is used as an overcurrent protection component, it is preferred to select maximum operating current, maximum operating voltage and proper specifications. Furthermore such factors should be taken into consideration as the dimensions of the components, rated zero-power resistance, operating temperature range, etc.
Please provide the resistance , precision and beta value with application for study. You may also send the current spec detail for us. And we will provide the equivalent at the soonest. Custom made.
PTC thermistors current protector, also called PTC thermistor resettable fuses, protect load against over-current, overload, short circuit. No need for replacement, resume protective function after a short cooling-down time. Ceramic PTC (positive temperature coefficient) thermistors are used instead of conventional fuses to protect load, such as motors, transformers, or electronic circuit, against overcurrent for circuit protection. PTC thermistor protector not only respond to inadmissibly high currents but also if a preset temperature limit is exceeded. PTC thermistor over-current protector limits the power dissipation of the whole circuit by increasing their resistance and thus reducing the current to a harmless residual value. In contrast to conventional fuses, PTC thermistor resettable fuses do not have to be replaced after elimination of the fault but resume their protective function immediately after a short cooling-down time. PTC Thermistor Over-current Protector Application It applies in the over-current overload and short circuit protection of transformers, battery charger, switches, switch power supply, adaptor, meter, instrumentation, apparatus, electronic coils, control panels, air conditioner, automotive electron, etc. Operating Principle of PTC Thermistor for Overload Over-current Protection The operating principle is as indicated in the following. When a circuit is in the normal status, the current through PTC is lower than the rated current and PTC thermistor protector is in the normal state with small resistance value, which will not affect the normal operation of the protected circuit. In case of some fault in the circuit and the current is greater than the rated current, the PTC thermistor protector will become hot quickly and present a high resistance state, which sets the circuit relatively "off" to protect the circuit from damage. After the fault is removed, PTC thermistor protector will automatically restore its low resistance state and the circuit will resume normal operation. Normally, when PTC thermistor is used as an overcurrent protection component, it is preferred to select maximum operating current, maximum operating voltage and proper specifications. Furthermore such factors should be taken into consideration as the dimensions of the components, rated zero-power resistance, operating temperature range, etc.
Temperature Protection PTC Thermistor Description PTC (positive temperature coefficient )thermistor switches at one particular temperature. Making use of the characteristics that the resistance of PTC thermistor increases sharply above curie temperature, when ambient temperature increases abnormally, protective circuit installed PTC thermistor will turn on or cut off loop through resistance changing, achieving thermal protection purpose. PTC thermistor protect such equipment and components as motors, transformers, power transistors and thyristors against over-temperature. A PTC thermistor is less expensive than a thermostat, and its switch temperature can be more accurately specified. It is also smaller and easier to design-in to electronic circuitry. Therefore PTC thermistor can be ideal devices for temperature detection, monitoring, indicating, limiting and over (excessive) temperature protection. Typical Application of PTC Thermistor for Temperature Protection and temperature limiting sensors Limit temperature measurement of Industrial electronics application. Power supplies, switch power supply. Home appliances, such as dish washers, washing machines, ironing machines, electric cookers, etc. Electronic data processing and communications engineering (DC/DC converters). Motor windings overheating Protection. Automotive electronics. Semiconductor heatsinks, enclosure panels, temperature-limited transistors. Lighting applications. Features of PTC Thermistor for Temperature Protection and temperature limiting sensors 2 Outlook construction: A-radial leaded epoxy resin coated form, B-metal tag lug form. PTC Thermistor Protection temperature: 60-130C Quick response. Long stability. Small dimension, convenient for installation. Do not need to be reset after protection.
Application field: Ptc thermistors are used to monitor temperature in machines and installations. The design ensures short response times and easy installation. The product sells point Ptc thermistors acc. To din 44081(triple sensors acc. To din 44082) are used to protect electrical machines against thermal overload. Thermistors have an even steeper r/t characteristic as that defined in the din standard. The temperature range is from 60 to 180. Ptc thermistors beads with different rated response temperatures can be connected in series. This permits an optimal and economic thermal protection of machines and windings with different limit tempratures. Key specifications/special features Single triple Max.Operating voltage 30 30 v Rated response temperature tk60-18 c Tolerance of tk ía5 ía5 k Resproducibility of tk ía0.5 ía0.5 k Resistance r25 ín100 ín300 ª+ Resistance at a temperature of tk-5k ín550 ín1650 ª+ Resistance at a temperature of tk +5k í²1330 í²3990 ª+ Resistance at a temperature of tk +15k í²4 í²12 kª+ Thermal response time td ín5 ín5 s Insulation test voltage v ac2.5 ac2.5 kv Max.Operating temprature 200 200 c Max.Storage temperature 160 160 c Min.Srorage temperature -25 -25 c Weight 2 3.5 g
CHIP NTC Thermistor Description A thermistor is a thermally sensitive resistor Whose primary function is to exhibit a change In electrical resistance with a change in body Temperature. Ntc thermistor is one in which the zero-power Resistance decreases with an increase in temperature. Features Multilayer structure allows diverse resistance value in the same b constant. Ultra small size, low capacitor, high b value. Glass coated perform for long term reliability Non-polarized for mounting. Possibility for flow/reflow soldering. Applications Temperature compensation for crystal oscillatorf]tcxof^. Temperature compensation for personal computer. Temperature detection for cpu and memory device. Temperature detection for battery pack. Temperature compensation for contrast of lcd. Temperature compensation and sensing of car audio equipments. (cd, md, tuner).
Thermistor protection relay Used for giving fool proof protection against overheating alongwith PTC thermistor Uses the signal of ptc thermistors and switches off the equipment to be protected when dangerous temperature is attained Available with large variety of input supply voltages for the convinience of the user The relay is din rail mounting type Weight is approximately 200 gms Dimensions (h x w x d): 77 x 30 x 115 mm
Taped In Reel High Accuracy 0805 Monolithic Multilayer NTC Thermistor 100K 5% 4250 I Description Of The Multilayer NTC Thermistor 0805 Standard Surface Mount NTC Thermistor available in the 0805 package. NTC (Negative Temperature Coefficient) thermistors, which are typically composed of metal oxides, are manufactured to take on the form of disks, rods, chips and other shapes. A more common shape, the SMD (surface mount device), is widely used in standard reflow soldering processes. The different values and tolerances offered by the industry allow many renditions of package sizes within the dimensional constraints of an EIA standard. Although the SMD EIA standard specifies a maximum component height, in most cases a minimum is not, allowing the manufacturer greater flexibility in offering different values within an NTC. This bulletin will focus on the methods and materials recommended for component attachment either through hand soldering for prototype construction or reflow/wave soldering operations for normal production. II Application Of The Multilayer NTC Thermistor 0805 · Temperature sensing, control and detection · Temperature compensation of transistors, ICs and crystal oscillators in mobile · Consumer electronics · Automotive electronics · LCD controls · Office automation equipment · Communication equipment · IT equipment · Mobile devices · Battery packs · Battery chargers · Hybrid ICs · AV equipment IV Main Techno-Parameters(In static air) Of The Multilayer NTC Thermistor 0805 P/N Resistance(25) B Value(25/50)(K) B Value(25/85)(K) Operating Current (25)(mA) Dissipation Factor (mW/) Thermal Time Constant (s) (k) QN0805X102F3650FB 1 3650±1% 3700 1.4 2
Temperature Compensation MF11 NTC Thermistor 100K 5% 10% 20% For Audio Amplifier I Overview Of The MF11 NTC Thermistor Common-precision temperature measurement, temperature compensation in measuring equipments and electronic circuit. Temperature compensation NTC Thermistor MF11 series is in resin coated pin wire form and has higher temperature coefficient,it can be widely applied in temperature compensation of many semiconductor and Ics that have temperature coefficient and require temperature compensation, to reach stability in wider temperature range.Temperature Compensation NTC Thermistor. The MF11 series of NTC Thermistors is designed for temperature measurement and the temperature compensation of measurement instruments and electronic circuits. II Features Of The MF11 NTC Thermistor 1. MF11 series in the form of radial resin coated form. 2. Broad range of resistance:0.01~200K 3. Standard tolerances: ±5%, ±10%, ±20% 4. Rated power:0.45W 5. Good consistency. 6. Operating temperature range: -35 ~ +125 7. Wide choice of B values 8. B Value tolerance: ±5% 9. Dissipation Constant 6.0mW/C 10. Time Constant of 30 seconds 11. Long-term Stability and Reliability 12. Good level of Tolerance and Interchangeability III Application Of The MF11 NTC Thermistor 1. Electronic circuit temperature compensation. 2. Computation equipment temperature compensation. 3. Temperature compensation of instrument loop, integrated circuit, crystal oscillator. 4. Commonly precision temperature measurement and control 5. Temperature Measurement 6. Temperature Compensation of Electronic Circuits Part No B Value (25/50C) Rated zero-power resistance at 25C Rated Value (K) Allowable Tolerance (%) Resistance range () Allowable Tolerance (%) MF11 2600 2800 3000 3200 3600 3950 4050 4150 4250 4300 4400 4500 4600 4750 +/-10 5-7 8-24 25-119 120-359 360-1400 1500-5900 6000-12000 13000-17000 18000-44000 45000-79000 80000-144000 145000-199000 200000-299000 300000-500000 +/- 5 +/- 10 +/-15 +/- 20
