1% 3380K 1005 Metric SMD NTC Thermistor Battery Chargers 10K OHM Thermistor

1005 Metric SMD NTC Thermistor 0402 10kOhms 1% 3380K For Battery Chargers

I Description Of The SMD NTC Thermistor 0402

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. According to the R-T resistance temperature curve of the thermistor, the precise resistance value of each temperature point can be measured. In the circuit, the temperature can be digitally corresponded through the resistance value for temperature measurement and control.AMPFORT thermistors have low thermal time constants which result in extremely high rates of resistance change to accurately track the temperature.



II Features Of The SMD NTC Thermistor 0402

1. Excellent solderability and high stability in environment
2. Excellent long time aging stability
3. High accuracy in resistance and B-constant
4. Reflow soldering possible
5. Lead is not contained in the product.
6. Recognized by UL/cUL

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

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.

Dongguan Ampfort Electronics Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales, committed to becoming a comprehensive supplier of circuit protection components.

We introduced advanced quality system,management systems and high-precision automation equipment from Germany, set up multiple production bases and continue to increase product lines. Our team consist of experienced engineers, passionate business elites, and regularly trained skilled workers, which provides a solid foundation for quality assurance and productivity performance. Moreover, our products have passed safety certifications of many countries and are favored by many consumers by years’ unremitting efforts.

We cooperated with universities and colleges, and will continue to research and develop new products , committed to high-quality circuit protection solutions, and provide global customers with efficient technology, products, and testing support to meet their requirements for rapid development of new products. We are gradually updating from "Made In China" to "Created In China" and to "Intelligent Manufacturing In China", from circuit design to product testing, we will provide you with one-stop service in the field of circuit protection.After years of intensive cultivation, we have maintained a good relationship with our peers and have become distributor of many famous electronic component brands to meet the diverse needs of customers.

The main products include: Thermistors, Varistors, Temperature Sensors, Fuses and corresponding Hardware and Plastic accessories, Inductors, Thermal Protector, Overload/Composite Protectors, Discharge Tubes, Photoresistors and Wiring Harnesses etc. Through the combination of different process devices,Ampfort Electronics can meet customers' individual circuit protection requirements. Our products are widely used in: power adapters, switching power supplies, chargers, transformers, computers, telephones, household appliances, communication products, lighting products, toy products, various instruments and various electronic cables, electrical products, IT, Consumer electronics, automobiles, batteries and other fields.

Choose us, Ampfort will be your loyal and reliable partner for protection circuit products !

Philosophy Survive with integrity and service, and develop with quality and innovation.

Goal Standardization Systemization Internationalization Leading leader in the same industry

Purpose Serve customers and develop enterprises

Benefit the employees and return to the society

Mission Dare to compete, be good at competition, win the competition

Vision Full of ambition today and hope tomorrow will be fruitful.

Message Innovate,forge ahead and hold hands, harvest brilliance and share together.