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Versatile Cantherm CWF4B683F3950 NTC thermistor probe with long term stability and multiple enclosure styles

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Versatile Cantherm CWF4B683F3950 NTC thermistor probe with long term stability and multiple enclosure styles

Resistance @ 25℃ : 68kΩ

Operating Temperature : -55℃~+125℃

B Constant (25℃/100℃) : -

B Constant (25℃/85℃) : -

B Constant (25℃/75℃) : -

B Constant Tolerance : ±2%

B Constant (25℃/50℃) : 3950K

Description : 68kΩ ±2% 3950K NTC Thermistors RoHS

Mfr. Part # : CWF4B683F3950

Model Number : CWF4B683F3950

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Product Overview

The CWF series NTC Thermistor Probes from Cantherm are precision sensors designed for accurate temperature measurement and control across a wide range of applications. These probes feature PVC leads, insulated with heat-conductive, water-resistant materials, and are potted into various probe bodies for diverse installation needs. They offer high reliability, fast response times, long-term stability, and excellent tolerance. Available in five basic enclosure styles, including ethoxyline dipped, metal-housed, plastic-bodied, sheet metal attachment fixtures, and custom probes, the CWF series is suitable for HVAC, automotive electronics, water heaters, household appliances, and industrial temperature control.

Product Attributes

Brand: CWF (Cantherm)
Division of: Microtherm
Origin: Canada
Lead Material: PVC
Insulation Material: Heat conductive, water resistant

Technical Specifications

Part No.	Rated Resistance R25 ()	B Value (25/50C) (K)	Dissi. Coef. (mW/C)	Thermal Time Constant (S)	Operating Temp. Range (C)	Allowable Tolerance (%)
CWF[][][]3100	100	3100	2.2	70	-55 to 125	1, 2, 3, 5
CWF[][][]3270	270	3270
CWF[][][]3380	1000	3380
CWF[][][]3470	2700	3470
CWF[][][]3600	5000	3600
CWF[][][]3950	10000	3950
CWF[][][]4000	20000	4000
CWF[][][]4050	50000	4050
CWF[][][]4150	100000	4150
CWF[][][]4300	200000	4300
CWF[][][]4500	500000	4500

Package Options:

1- Dipped ethoxyline resin: Moisture resistant, good insulation, high reliability, small time constant, quick responses.
2- Aluminum, copper, or stainless steel housing: High resistance to thermal shock, moisture resistant, strong and secure structure, high dissipation coefficient.
3- Plastic body: Good dimensional tolerances, good heat resistance and moisture protection, high voltage resistance.
4- Sheet metal attachment fixtures: Wide variety of fixtures, suitable for most applications.
5- Special probes: Small time constant, fast response, flexible and secure.

Dimensions (mm):

Standard Probes:

Code	A (Max)	B (Max)	C (Max)	D (Max)	L1 (Max)	L2 (Customer Specified)
1A	4	5	6	7	16	Customer Specified
2A	4	5	5	5	16	Customer Specified
3AA	4	5	5	5	20	Customer Specified
3B	4	8	8	-	-	Customer Specified

Customer Specified Dimensions:

Code	D (0.2 mm)	L1 (0.2 mm)	L2 (Customer Specified)
3AA	5	20	Customer Specified
3B	8	35	Customer Specified
3C	8	50	Customer Specified
3D	-	-	Customer Specified

General Applications:

Heating, ventilation & air conditioning
Temperature regulation and measurement
Automotive electronics
Water heaters
Household appliances (refrigerators, water coolers, dishwashers)
Fan control
Industrial temperature controllers
Electronic thermometers

General Characteristics:

Wide variety of installation fixtures and probes.
Small size and fast response (temperature coefficient of resistance can reach - (2~5%/C)).
Long-term stability and reliability (yearly drift of 1%).
Excellent tolerance and interchangeability (accuracy of R and B value can be 1%).
Double layer packaging provides excellent insulation and high strength and impact resistance.
Dissipation constant type 1 package 2.0mW/C, type 2 package 4.0mW/C.
Time constant of 15S to 70S.

2411220418_Cantherm-CWF4B683F3950_C17637836.pdf

Versatile Cantherm CWF4B683F3950 NTC thermistor probe with long term stability and multiple enclosure styles Images

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