Ptc thermistors for delayed start of lamps and ballast
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.
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
PTC Alloy wire has medium resistivity and high positive temperature coefficient of resistance. It is widely used in various heaters. It can automatically control temperature and adjust power by keeping comstant current and limiting current. GRADE:P-4500,P-4000,P-3800,P-3500,P-3000,P-2500
Thermistor Manufacturing Ya Xun with the most advanced equipment and technology, to provide customers with a variety of thermistor manufacturing services, including NTC, PTC, NTC sensors and PTC sensors, power thermistors and so on. We have all the technical and production processes thermistor, comprising Metal Element Synthesis - Chip Sintering - Electrode preparation - Slicing - Packaging - Finished product testing. We manufacture thermistors that export all over the world, created China's most high-quality sensitive components, affordable price service to customers.Ya Xun thermistor manufacturing technology and temperature sensor processing services complement each other, this one-stop service can meet your more complex product design requirements. welcome to contact us for free quotes, to discuss the best solution for the project. What Is A Thermistor? Thermistor is a temperature coefficient sensitive element, according to the temperature coefficient is divided into different temperature coefficient thermistor (PTC) and negative temperature coefficient thermistor (NTC), the thermistor element using various combinations of metal sintering, to achieve desired characteristics of the final product. Advanced processing technology will be based on customer requirements for parameter adjustment. Our technical staff will continue to improve elements combined process, to improve the accuracy of the resistance of the final optimized to meet the product design requirements. In Ya Xun, in order to meet the different customer requirements, develop a variety of resistance materials: semiconductor resistive materials, metal resistive materials, alloy resistive materials.
Application/Category Application/Category Design Leaded disks, coated, 63 V Max. operating voltage (V) 80 Rated resistance (Ohm) 25 Type B59980C0080A070
Linear PTC Thermistor (LPTC) resistance increases with the temperature rises in linearity, displays a virtually linear positive temperature coefficient over their entire temperature range, suitable in measurement and control system, temperature compensation. As the construction material is mainly semiconductor monocrystalline silicon, also called silicon temperature sensor, silicon thermistor, sometimes referred to as silistors. As the temperature coefficient is positive, the silicon temperature sensors exhibit fail-safe operation when a system overheats. Furthermore silicon is inherently stable, so silicon temperature sensor are extremely reliable and have very long operational lifetimes. Hermetically sealed glass package, axial leaded, 2 leads, can operate in high temperature and moisture environment. Linear PTC thermistor in small dimension, tightness, convenient for automatic installation. AMWEI Linear PTC Thermistor (LPTC) Features: 1. Silicon temperature sensors have a TK (temperature coefficinet) which is nearly constant over the complete temperature range. Temperature coefficient a25/50>=0.7%/C. 2. Excellent long term stability, annual diversification rate
NTC Thermistor At Ya Xun,We offer a full range of NTC thermistor component services, products include: Mixed metal element - isostatic pressing forming - High temperature sintering - Semiconductor sliced - Dicing - Glass sintering or epoxy encapsulation - Finished product testing. We manufacture thermistors that export all over the world,Also created China's most high-quality sensitive components, with economic prices that can not be found elsewhere. When you send us a product parameter inquiry, our engineers will review your product requirements, and will explain to you the product features and applications, make sure the product meets your requirements. What Is NTC Thermistor NTC thermistor is a negative temperature coefficient thermistor, NTC thermistor can be widely used in temperature measurement, temperature compensation, suppression of inrush current and other occasions. Characteristics Of NTC Thermistors 1, At the Ya Xun, NTC thermistor is the most important feature is the long service life, after the ultra-high temperature, high pressure test. The product is still high precision, high sensitivity, high reliability, it can still work for a long time stable. 2, small size, able to measure other thermometers can not measure the space, cavity and the temperature of blood vessels in the body; 3, easy to use, the resistance value can be arbitrarily selected between 0.1 ~ 100k 4, we can provide customers with different appearance of the shape of thermistor, and mass production; 5, Good stability, strong overload capacity. NTC Thermistor Chip Sintering Process NTC thermistor semiconductors are mostly spinel structures or other structures of oxide ceramics, use manganese oxide, the copper, the silicon, the cobalt, the iron, the nickel, the zinc, or the like are sufficiently mixed,Molding, sintering and other processes made of semiconductor ceramics, can be made with a negative temperature coefficient (NTC) thermistor. The resistivity and material constant vary with the material composition ratio, sintering atmosphere, sintering temperature and structure state. NTC thermistor different seal To meet the convenience of customer installation, Ya Xun every year will introduce different packages of products, can also be customized according to customer requirements of different shapes,NTC thermistor package also achieved diversification.Common products include: Epoxy thermistor, Single-ended glass thermistor, SMD glass thermistor, Resistive glass thermistor, Enameled wire thermistor, Thin film thermistor, SMD thermistor and so on .
Brief introduction: Ptc thermistor for time delay of lighting&ballast, which are applicable to various types of fluorescent lamp, electronic ballast, electronic energy-saving lamp and digital multi-meters.It can change hard stard of the ballast and electronic energy-saving lamp to pre-heated stard and preheating time of the filament can come up to 0.4-2.0 seconds, which can greatly prolong service life of the fluorescent tube by over 4 times. Product application: 1. Various types of fluorescent lamp 2. Electronic ballast 3. Electronic energy-saving lamp Advantages: 1. Used in the frequent-switching, typical switching life can pass over 100, 000 times 2. High reliability, good performance of safety and stability 3. Wide operating temperature range -25 ~ +125 celsius degree(when v=0v) 0~ +60 celsius degree(when v=vmax) 4. The withstanding voltage can reach to over 420-1000vac 5. The resistance will not drift in normal temperature. 6. Small dimension 7. Complete specifications 8. Stable delayed time Remarks: many specifications for choice, and samples&orders can be custom made per customers' requirement. Bulk or carton package
Telecom PTC Thermistor Description This series of ceramic PTC (positive temperature coefficient ) thermistors help provide protection against power cross, power induction surges and lighting surge defined in ITU, Telcordia, UL. Available in chip, radial-leaded coated and non-coated, SMD, twin vertical surface mount configuration. PTC thermistor overcurrent protector provides reversible, self-resetting protection against over-currents of telecommunication line protector units, improve the reliability of custom premises and network equipment. Ceramic PTC thermistors can be found providing re-settable line protection at the exchange, monitoring hot spots and protecting ringers, battery feeds, transformers and relay circuits. Also used extensively to protect the mobile phone's battery pack against overcharging in land-based and radio mobile communications. Advanced developments in telecom equipment in recent years have radically altered the protection requirements of both exchange and subscriber equipment. The PTC thermistor must protect the telephone line circuit against overcurrent, which may be caused by the following examples: Surges due to lighting strikes on or near to the line plant. Short-term induction of alternating voltage from adjactent power lines or railway systems, usually caused when these lines or systems develop faults Direct contact between telephone lines and power lines. To provide good protection under such conditions, a PTC thermistor is connected in series with each line, usually as secondary protection; However, even with primary line protection (usually a gas discharge tube), the PTC thermistor must fulfill severe requirements. Surge pulses of upto 2KV can occur and in order to withstand short term power induction, the PTC thermistor must withstand high voltages. If the line has primary protection, a 220V to 300V PTC thermistor is adequate. Without primary protection, 600V PTC device is necessary. We can manufacture a series of PTC thermistor fulfilling both requirements. Typical Application of PTC Thermistor in Telecommunication Protection Central Office Switching Equipment (C.O), analog and digital line cards, T1/E1 equipment, xDSL modems and splitters, multiplexers, CSU/DSU, servers. Primary Protection Modules, MDF (main distribution frame) modules, network interface devices (NIC). Custom Premises Equipment, also known as subscriber terminal equipment (T.E.), IT equipment: Modem, phone sets, fax machines, phone wall outlet (plugs), alarm systems, answering machine, PBX systems, ADSL Splitters, internet appliance, POS terminals. Access Network hardware, LAN WAN equipment, Powered Ethernet systems, VoIP (voice over IP equipment), Set-top box (S.B), etc. Telecom PTC Thermistor Features Compliant with ITU-T K20 K21 K45 Basic level lightning surges (10/700ª¦s) Basic level power Induction (600V,1A,0.2S) Power contact criteria A/B (230V,15min.) Suitable for continuous connection to main voltage 110/230 VAC in tripped (high ohmic) condition.
PTC heaters for floor standing and central air conditioner are constituted by PTC components, which are connected with heat sink strips by insulation layer, which is replaced by Aluminum tube in JX series. Parallel rows are added to increase windward surface so as to increase power with size unchanged. All products has outstanding performance in electrical strength, heating up and safety. Besides, we also design and produce customized products. Parameters: Item Parameters Rated Voltage (V) 12~380V Rated Frequency (Hz) 50(60) Size of radiator (mm) 200~700 Rated power range (W) 500~3500 Power tolerance (%) +5~-10 Insulation resistance (M¦¸) >=100 Electric Strength (V/min) 1500 PTC withstand voltage (V) 450 Power decay rate (%)
Ptc air heater is one kind of heater that are able to maintain automated temperature control and power saving. It depends on ptc elements as its heating resources, and corrugated plate made of aluminum alloy as its radiator. The heaters are processed by conglutination and welding. Heat resistant plastic (pps) frame is equipped for more easy installation for final applications. Product features: - very low air resistance - long service life - no thermostat required - virtually unlimited life - no moving parts to wear - very low cost - no electrical noise - the higher the temperature, the more electricity efficient - does not burn when in contact with paper, matches or clothes Typical applications: - air conditioners - drier - warm air generator - air conditioner for both warm and cold temperature - automobiles Carton
Ptc air heater is one kind of heater that are able to maintain automated temperature control and power saving. It depends on ptc elements as its heating resources, and corrugated plate made of aluminum alloy as its radiator. The heaters are processed by conglutination and welding. Heat resistant plastic (pps) frame is equipped for more easy installation for final applications. Product features: - very low air resistance - long service life - no thermostat required - virtually unlimited life - no moving parts to wear - very low cost - no electrical noise - the higher the temperature, the more electricity efficient - does not burn when in contact with paper, matches or clothes Typical applications: - air conditioners - drier - warm air generator - air conditioner for both warm and cold temperature - automobiles Ul sgs
Ptc resettable fuse: Widely used in the electrical appliance and circuit for over-current protection. Automatic reset Holding current : 0.020a~30a (thermal derating ) Operating voltage : 6v~600v Operating temperature available: -40c~80c Customized product improvement acceptable Agency approval:ISO9000, TS16949, UL, TUV, SGS, ROHS Sample: free Negotiable
Ptc resettable fuse: * widely used in the electrical appliance and circuit for over-current protection. * automatic reset * holding current : 0.020a~30a (thermal derating ) * operating voltage : 6v~600v * operating temperature available: -40c~80c * customized product improvement acceptable * agency approvalú¦iso9000, ts16949, ul, tuv, sgs, rohs * sample: free Negotiable
Ptc resettable fuse: * widely used in the electrical appliance and circuit for over-current protection. * automatic reset * holding current : 0.020a~30a (thermal derating ) * operating voltage : 6v~600v * operating temperature available: -40c~80c * customized product improvement acceptable * agency approvalú¦iso9000, ts16949, ul, tuv, sgs, rohs * sample: free Negotiable
