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Laser Welding Ultrasonic Welding Nickel Plated Brass NTC Thermistor Temperature Sensor CWF 4

Categories NTC Temperature Sensor
Brand Name: UCHI
Model Number: CWF 4
Certification: ROHS,UL
Place of Origin: Dongguan,Guangdong,China
MOQ: 1000PCS
Price: Negotiable
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 50000000pcs per month
Delivery Time: 7~14 days
Packaging Details: Standard export package
Assembly: Laser welding,ultrasonic welding
Application: apply to temperature control module of lithum battery
Zero power resistance tolerance at 25deg: ±1%
B value tolerance: ±1%
Head material: Nickel plated brass
Wire material: PVC,FEP
Withstand voltage: ≥1500VAC
Operating temperature: -40~+105degC/+125degC
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    Laser Welding Ultrasonic Welding Nickel Plated Brass NTC Thermistor Temperature Sensor CWF 4

    Laser Welding Ultrasonic Welding Nickel Plated Brass NTC Thermistor Temperature Sensor CWF 4


    Thermistor is a ceramic semiconducting element made from exorbitant oxides material. It
    has the feature that the resistance changes according to the ambient temperature.Namely,
    their resistance declines with the rising of ambient temperature at a determinate measuring

    power.With this feature NTC thermistor and temperature sensor can be applied in the

    situation of temperature measurement and control,compensation and surge current protection.

    PDF File :

    NTC Temperature Sensor Profile 1 of 2.pdf

    NTC Temperature Sensor Profile 2 of 2.pdf


    Series: CWF 4

    Application: apply to temperature control module of lithum battery
    Assembly: Laser welding,ultrasonic welding

    Technical specifications:

    • Zero power resistance tolerance at 25deg: ±1%
    • B value tolerance: ±1%
    • Head material: Nickel plated brass
    • Wire material : PVC,FEP
    • Withstand voltage : ≥1500VAC
    • Operating temperature: -40~+105degC/+125degC

    Chips-NTC thermistor used


    1. Moisture proof,waterproof
    2. Easily assemble, stable
    3. Resistance,B-value can be customized
    4. Metal part and wire can be customized

    Workshop of high quality and high performance NTC Thermistor

    We have the unique process and leader core technology with proprietary intellectual property rights of ceramic powder equipment,made of chips,high performance NTC Automatic batch production.
    We have more than 12 series of high performance NTC thermistors automatic production line,products have the advantages of large production,high quality,good coherence,high reliability,besides it can be made of many kinds of NTC temperature sensors,it also can be supplied to other factories of NTC sensors,and exported in large quantities to overseas.

    Part numbering

    Normal models


    Epoxy resin coating

    CWF2 Aluminum,


    stainless steel cap

    CWF3 Plastic cap

    CWF4 Fixed sheet metal

    CWF5 Special shape

    NTC Temperature sensor -- a glance at workshop

    Advantages and characteristics of Auto Temperature Sensor

    • We have the heart of NTC temperature sensor--full sets of production line and core technology of pro-prietary intellectual property rights for high performance temperature measurement NTC thermistor.
    • We have all kinds of NTC core element of NTC Temperature sensor--high performance temperature measurement thermistors are own production,complete series,structural diversity. Our products can meet the requirements of prevision measurement in different temperature area from low temperature,medium and low temperature to medium-high temperature.These products have passed many safety certifications of domestic and foreign.
    • Resistance and temperature characteristics can meet customer's requirements entirely,and support best convenience to customers.
    • Mature manufacturing technique of NTC temperature sensor,Large-scale mass production,product have the best ability of insulation sealing,Mechanical collision,resistance to bending,well-set.
    • Small thermal time,fast response
    • Multi category,complete series,many kinds of housing he configuration,easy to assemble
    • We have high lavel inspection equipments which carrry out strict and normative inspection process.
    • Our products with high precision,high reliability,high stability,high interchangeable,high commonality are advanced in industry.

    (Highest tolerance can be reach ±0.02℃) (Years of drif rate ≤1‰)

    Operating temperature and environment of NTC temperature sensor depend on specific performance of its core element and lead wire:

    ►Different NTC thermistor using in the NTC temperature sensors with the following different operating temperature:

    Chip or MF52A,MF51E,MF55: temperature resist grade 125℃,actual temperature resist grade 150℃
    MF58: temperature resist grade 200℃,actual temperature resist grade 250℃
    MF51: temperature resist grade 200℃,actual temperature resist grade 250℃
    Special MF51: temperature resist grade 250℃,actual temperature resist grade 300℃
    Weldless chip:temperature resist grade 450℃,actual temperature resist grade 500℃

    ►Operating environment

    In the environment of high temperature,high humidty and high corrosion,we suggest to use glass sealed type thermistor as the core element.And MF51 type will be the best NTC thermistor in high humidity environment.

    ►Design considerations and procedure of temperature sensor:

    1. Choose the shape acoording to customer's design or assemble requirements, and confirm the thermistor.
    2. Confirm the thermistor element and other materials according to customers' requirement
    3. Choose the suitable resistance,B value and tolerance
    4. Choose suitable moisture-proof and insulation technology to meet customer's requirement
    5. Choose suitable encapsulation structure to meet performance requirements of mechanical shock resistance
    6. Meet customer's special requirements.

    Reliability Test

    Test ItemTest StandardTest methodPerformance requirements
    Zero Power ResistanceIEC 60539-1Immerse samples in the constant temperature bath at 25℃±0.005℃,test steady resistance

    Resistance tol ±1%

    B valueIEC60539-1Immerse samples in the constant temperature bath at 25℃,50℃(or 85℃), test steady resistance,and calculate B value

    Resistance tol ±1%

    Free fall


    Fall height: 1.5±0.1m,Surface: Cement , 1 time

    No obvious damage, R25 △R/R≤±1%



    500V pressure on insulation shell test insulation resistance


    Withstand voltageIEC60539-1

    Withstand voltage: 1500V/AC ,Leakage current:2mA Lasting: 60sec

    No obvious damage


    Pull uniform speed at the end, F>4.0KG(requested by customer)

    No obvious damage, R25 △R/R≤±1%

    VibrationQ/HBm 108-94Test frequency: 10~500Hz,swing: 1.2mm acceleration: 30m/s2 Direction X,Y,Z Time:8Hour/direction

    No obvious damage, R25 △R/R≤±1%

    Steady humidity and heatIEC60068-2-78Temp:40±2℃ Humidity:92-95%RH Time:1000±24Hour

    No obvious damage, R25 △R/R≤±1%

    Thermal time constantEC60539-1Immerse in 25℃ water,after thermal balance,immerse in 85℃,resistance arrives 63.2%,calculate total time

    <10 sec

    High temperature storageIEC60068-2-2Temp:125℃±5℃ Time: 1000±24HourNo obvious damage, R25 △R/R≤±1%
    Cold and thermal shockIEC60068-2-14

    -40℃~+125℃ T1:30min Cycle time:1000

    No obvious damage, R25 △R/R≤±1%

    Knock experimentIEC60068-2-77

    Acceleration:250m/s2 Pulse lasting: 6ms Knock times: 1000 Recovery time: 2 Hour

    No obvious damage, R25 △R/R≤±1%

    Low temperature storageIEC60068-2-1

    Temp: 40±2℃ Time: 1000±24Hour

    No obvious damage, R25 △R/R≤±1%

    Salt sprayIEC60068-2-11Temp: 35±2℃ Collection hour : 1.0mL~2.0mL Time: determine per as actual demand

    No obvious damage, R25 △R/R≤±1%

    Introduction of test and inspection equipments

    Name: High/Low-Thermal Shock Chamber

    Function:test product withstand high/low-thermal shock chamber

    Name : Constant temperature and humidity chamber

    Function: test products storage state under steady damp and heat

    Name : Vibration testing equipment

    Function : test the effect on product during transportation generated by vibration frequency and amplitude

    Name : Salt spray test machine

    Function: Test product resistance to oxidation,corrosion

    Name : Laser particle size analyzer

    Function : Analyse material of laser particle size

    Name : Vacum & high temperature dry oven

    Function : high temperature aging test

    Name : Spectrum analyzer

    Function : analyze harmful substance content of products

    Name : Electrolytic thickness gauge

    Function : Used for testing coating thickness of raw material

    Name : Constant temp oil bath instrument

    Function : test ambient temperature at constant point resistance (tolerance ±0.002℃)

    Name : Low Temperature precision test sink

    Function : Test temperature at constant point resistance during -70℃~0℃ (tolerance ±0.01℃)

    Name : DC constant voltage and constant current power supply (high current)

    Function : Test U-I Curve

    Name : High precision thermistor sorter

    Function : Test resistance of thermistor

    Name : Dissipation and thermal time constant testing instrument

    Function : Test dissipation and thermal time constant

    Name : NTC Impact tester

    Function : Test impulse capacitance which products can endure

    Name : Withstand voltage test instrument

    Function : Test insulation withstand voltage

    Name : DC constant voltage power supply

    Function : Test rated power consumption

    Name : Projector

    Function : Test out appearance and inner structure

    Name : Elongation rate instrument

    Function : Test elongation rate of leads

    Name : Overload aging test machine

    Function : Electricity aging test of temp measurement products

    Name : Chemical experiment table

    Function : Chemical blending

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