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CQC Certificated Waterproof CWF Precision Custom NTC Temperature Sensor 10KOHM 3950 For HVAC and Refrigeration

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CQC Certificated Waterproof CWF Precision Custom NTC Temperature Sensor 10KOHM 3950 For HVAC and Refrigeration

Large Image :  CQC Certificated Waterproof CWF Precision Custom NTC Temperature Sensor 10KOHM 3950 For HVAC and Refrigeration

Product Details:

Place of Origin: CHINA
Brand Name: SHIHENG
Certification: CQC
Model Number: CWF

Payment & Shipping Terms:

Minimum Order Quantity: 1000PCS
Price: Negotiable
Packaging Details: Bulk
Delivery Time: 2~ 3 weeks
Payment Terms: T/T, Western Union, MoneyGram,Paypal
Supply Ability: 4 Billion Pieces Per Year
Detailed Product Description
Type: Waterproof CWF Precision Custom NTC Temperature Sensor R25: 0.1K~1000K OHM
Housing: Epoxy/Brass/Stainless Steel/Aluminum/Plastic Etc. Customized: Available
Cable Length: To Be Advised By Customer Application: Automotive,Medical,BBQ,Home Appliances Etc.
Certificate: CQC CQC Number: CQC10001052282
Operating Temperature Range: -80~+600Degree Sensing Element: NTC/PTC/RTD/DS18B20 Etc.
Cable/Wire: PVC, Silicone, FEP, Fiberglass Insulation, Other Resistance Tolerance: ± 0,5% ± 1% ± 2% ± 3% ± 5%


CQC Certificated Waterproof CWF Precision Custom NTC Temperature Sensor 10KOHM 3950 For HVAC and Refrigeration


PDF Specification File Download Link : CWF Precision NTC Temperature Sensor.pdf




NTC Temperature Sensors offers wide range of standard and customized temperature sensors designed according to individual customer's requirements covering applications in temperature range between -80°C and +600°C. Our product contains temperature sensors build using NTC/PTC thermistors, RTDs ,DS18B20 and other sensing elementsmounted into wide range of metal/plastic housings.



How to order ?


1. Operating temperature range :  ?

2. Application: ?

3. Material and dimension of Housing: ?

4. Specification of sensing element : ?

(For example: If sensing element is NTC Thermistor, then Resistance at 25degree is 10KOHM,Resistance tolerance is ±1% ; Beta value is 3950,Beta tolerance is ±1%)

5.Cable gauge and length

6. How to deal with tail of cable ? Attach connector or stripped & tinned ? If attach connector,pls let us know part number of connector and we will recommend suitable one.

7. Any special requirements ? For example; Tolerance for sevaral temperature point etc.

8. Estimated quantity required 


Note: If you can provide datasheet/drawing or famous MPN ,then you have no need provide above info .





Proven Stability and Reliability,
Cost effective solutions
Variety of metal and plastic housings and tubings designed for specific applications
Potted with different kinds of resin for good sensor protection
Available with special kinds of cables (2-core cables or stranded with PVC, Silicone, Teflon or Kynar insulation,cables with screen & other), connectors and other attachments
Provides good protection from the environment conditions
Proven high voltage strength and dynamic strength
Wide range of Resistance/Temperature, characteristics
Designed for temperature measurement, control and compensation





Automotive(Air Conditioning, Cabin Climate Control/Management,
External Temperature Monitoring, Heated Seats, Heated Steering
Wheels, other), Consumer Products, Instrumentation

Industrial Ovens, Electric Showers, HVAC and Refrigeration,Fire Detectors, Pools and Spas, Others...



Popular products display


a.CWF1 Packed with epoxy resin


Dimension(mm) Code S1 S2 S3 S4 Function Main application
Dmax 4 5 6 7 Moisture-proof,small time contant,fast respond




L1max 16 16 16 16
Cable 28# 26# 24# 22#
L2 To be advised


b.CWF2 Packed with aluminum,copper,stainless steel etc.


Dimension(mm) Code S1 S2 S3 S4 S5 S6 S7 Function Application
Dmax 4 5 5 5 6 6 6

Moisture-proof,large coefficient,

excellent stability


hold air-conditioner refrigerate heater

L1max 20 20 25 30 20 25 30
L2 According to customer’s requirement


c.CWF3 Packed with plastic


Dimension(mm) Code S1 S2 S3 S4 Function Application
D 3.5 4 5 6


Excellent coherence,voltage withstand

House hold,



L1 15 15 15 20
L2 To be advised by customer
D 4 8 8
L1 10 35 50
L2 To be advised by customer


d CWF4 Fixed sheet metal added


Dimension(mm) Function Application


It can be meet

with different mount

requirement because

of agility dimension






e CWF5 Special packed shape


Dimension(mm) Function Application
Small time constant,fast respond,stability.

Applied in

high temperature environment,heater,

coffee oven,etc.



Main Technology Parameters


Part number Rated resistance R25 B value (25/50)

Dissipattion Coeffient.


Thermal time constant Operating temperature
Range KOhm Tolerance % (K) Tolerance % Mw/℃ sec
CWF□□□3100 0.1~20





3100 ±1 ≥2.2 ≤70 -55~+125
CWF□□□3270 0.2~20 3270
CWF□□□3380 0.5~50 3380
CWF□□□3470 0.5~50 3470
CWF□□□3600 1~100 3600
CWF□□□3950 5~100 3950
CWF□□□4000 5~100 4000
CWF□□□4050 5~200 4050
CWF□□□4150 10~250 4150
CWF□□□4300 20~1000 4300
CWF□□□4500 20~1000 4500



Sensing Element-NTC thermistor used




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.




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 Item Test Standard Test method Performance requirements
Zero Power Resistance IEC 60539-1 Immerse samples in the constant temperature bath at 25℃±0.005℃,test steady resistance

Resistance tol ±1%


B value IEC60539-1 Immerse 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 voltage IEC60539-1

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


No obvious damage


Tension IEC60068-2-21

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


No obvious damage, R25 △R/R≤±1%


Vibration Q/HBm 108-94 Test 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 heat IEC60068-2-78 Temp:40±2℃ Humidity:92-95%RH Time:1000±24Hour

No obvious damage, R25 △R/R≤±1%


Thermal time constant EC60539-1 Immerse in 25℃ water,after thermal balance,immerse in 85℃,resistance arrives 63.2%,calculate total time

<10 sec


High temperature storage IEC60068-2-2 Temp:125℃±5℃ Time: 1000±24Hour No obvious damage, R25 △R/R≤±1%
Cold and thermal shock IEC60068-2-14

-40℃~+125℃ T1:30min Cycle time:1000


No obvious damage, R25 △R/R≤±1%


Knock experiment IEC60068-2-77

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


No obvious damage, R25 △R/R≤±1%


Low temperature storage IEC60068-2-1

Temp: 40±2℃ Time: 1000±24Hour


No obvious damage, R25 △R/R≤±1%


Salt spray IEC60068-2-11 Temp: 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

Name : Aging stage

Function : Test aging reliability of product


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Dongguan Uchi Electronics Co.,Ltd.

Contact Person: Anna

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