NTC thermistor is a ceramic semiconductor thermal crystal sintered from various metal oxides mainly manganese, cobalt and nickel. It is extremely sensitive to temperature changes. Its zero-power resistance varies with the body temperature. As the temperature increases, the resistance value decreases exponentially, and the temperature coefficient is as high as (3~6%/℃). A small temperature change will cause a large resistance value change. Welcome to buy 1% 3380K 1005 Metric SMD NTC Thermistor Battery Chargers 10K OHM Thermistor from Aolittle. Every request from customers is being replied within 24 hours.
III Applications Of The SMD NTC Thermistor 0402
Temperature sensing, protection and compensation in industrial, telecom and consumer applications. Examples are:
• Battery chargers
• Power suppliers
• Office equipment
• LCD compensation
• In-car entertainment
IV Dimensional Drawing Of The SMD NTC Thermistor 0402(unit:mm)
V Sample application: Temperature detection and temperature compensation for smartphones and tablets
Many NTC thermistors are used in smartphones and tablets for temperature detection and temperature compensation.
Fig. 1: Major temperature detection and temperature compensation applications of NTC thermistors in smartphones and tablets
The basic circuit is a voltage-dividing circuit with an NTC thermistor and a fixed resistor connected in series. The resistance value of an NTC thermistor placed near a heat generating part such as a CPU or a power module decreases with rise of temperature and changes the output voltage of the voltage-dividing circuit.
This change is sent to a microcontroller to initiate temperature compensation actions and protect circuit components from overheating.
Fig. 2: Basic circuits for temperature detection and temperature compensation
VI Main Techno-Parameters(In static air) Of The SMD NTC Thermistor 0402
|B Value(25/50℃)(K)||B Value(25/85℃)(K)||
VII Advantages Of The SMD NTC Thermistor 0402
NTC thermistors are temperature-sensitive resistor elements using semiconductor ceramics with negative temperature coefficients (NTC). That means that the resistance decreases exponentially with rising temperature. The steeper the RT curve, the greater the change in resistance within a specified temperature range. With this property, they are often used as temperature sensors and also used as temperature protection devices for purposes such as temperature measurement and temperature compensation.
VIII Frequently Asked Question FAQ
Q: Are you manufacturer ?
A: Yes, we are manufacturer and distributor of famous brand such as Littelfuse.
Q: Which city does your factory in ?
A: Dongguan City,Guangdong Province, China
Q: May i know your working time ?
A: Official working time is 8:00 ~ 12:00 AM, 1:30 ~ 5:30 PM.However, sales in our overseas department will do overtime working and 7x24hours online.
Q: Do you accept custom made ?
A: Yes, we are professional in customization model based on rich experiences and professional engineering.It’s helpful if you can provide drawing or detailed specification should be.
Q: May i know your lead time ?
A: Lead time is 7 days for standard model and exact lead time depend on detailed requirements if special model selected.
Q: May i receive samples before place order ?
A: Yes, generally samples is free but sample cost should be charged if quantity is too many ,product cost is too much or new mould fee required.
Q: What’s your payment terms ?
A: T/T, Paypal etc.
Q: What’s currency you can accept ?
A: Mainly US dollars and Chinese Yuan
Q: Does your package method safe for transportation ?
A: Yes, our package would be 10~1000pcs per plastic bag -> multiple bags per box -> multiple boxes per carton and it is safe for express/air/boat shipment.