Versatile Cantherm CWF4B683F3950 NTC thermistor probe with long term stability and multiple enclosure styles
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.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.