Product Overview
This product is a series of NTC thermistors designed for various applications. They offer a range of resistance values, tolerances, and operating temperatures, making them suitable for precise temperature sensing and control. Key electrical performance parameters include resistance, heat dissipation coefficient, thermal time constant, maximum steady-state current, maximum capacitance, material constant, and operating temperature range. The product also undergoes rigorous reliability testing, including solderability, resistance to soldering heat, lead terminal strength, temperature cycling, electrical cycling, load life, and humidity testing, ensuring consistent performance and durability.
Product Attributes
- Packaging Options: Bulk, Foldable Tape
Technical Specifications
1. Dimensions
| Series | DMAX (mm) | TMAX (mm) | d0.05 (mm) | P0.5 (mm) | Hmax (mm) | L (mm) | Lead Type |
|---|---|---|---|---|---|---|---|
| CN05** | 6.5 | 5.0 | 0.6 | 5.0 | 12.5 | Cutting leads Or long leads | >18mm |
| CN07** | 8.5 | 5.0 | 0.6 | 5.0 | 14.5 | Cutting leads Or long leads | >18mm |
| CN09** | 10.5 | 5.5 | 0.6/0.8 | 5.0/7.5 | 16.5 | Cutting leads Or long leads | >18mm |
| CN10** | 12.5 | 5.5 | 0.6/0.8 | 5.0/7.5 | 18.5 | Cutting leads Or long leads | >18mm |
| CN13** | 14.5 | 6.0 | 0.8 | 7.5 | 20.5 | Cutting leads Or long leads | >18mm |
| CN15** | 16.5 | 6.5 | 0.8/1.0 | 7.5 | 22.5 | Cutting leads Or long leads | >18mm |
| CN20** | 22.5 | 7.0 | 0.8/1.0 | 7.5/10.0 | 28.5 | Cutting leads Or long leads | >18mm |
2. Main Electrical Performance Parameters
| Series | R25 () | Resistance Tolerance | (mW/C) | (s) | Imax (A) | Cmax (F) | Material Constant B (K) 10% | Operating Temperature T (C) |
|---|---|---|---|---|---|---|---|---|
| CN0515M | 15.0 | 20% | ~6 | <22 | 0.6 | 47 | 3000 | -40~150 |
| CN0705M | 5.0 | 20% | ~10 | <30 | 2.0 | 100 | 2600 | -40~150 |
| CN0708M | 8.0 | 20% | ~10 | <30 | 1.0 | 100 | 2600 | -40~150 |
| CN0710M | 10.0 | 20% | ~10 | <30 | 1.0 | 100 | 2800 | -40~150 |
| CN0903M | 3.0 | 20% | ~11 | <38 | 4.0 | 220 | 2600 | -40~170 |
| CN0905M | 5.0 | 20% | ~11 | <38 | 3.0 | 220 | 2600 | -40~170 |
| CN0908M | 8.0 | 20% | ~11 | <38 | 2.0 | 220 | 2800 | -40~170 |
| CN0910M | 10.0 | 20% | ~11 | <38 | 2.0 | 220 | 2800 | -40~170 |
| CN1005M | 5.0 | 20% | ~13 | <50 | 4.0 | 330 | 2800 | -40~170 |
| CN1008M | 8.0 | 20% | ~13 | <50 | 3.0 | 330 | 2800 | -40~170 |
| CN1010M | 10.0 | 20% | ~13 | <50 | 3.0 | 330 | 2800 | -40~170 |
| CN1016M | 16.0 | 20% | ~13 | <50 | 2.0 | 330 | 2900 | -40~170 |
| CN1020M | 20.0 | 20% | ~13 | <50 | 2.0 | 330 | 3000 | -40~170 |
| CN134R7M | 4.7 | 20% | ~16 | <70 | 5.0 | 470 | 2800 | -40~170 |
| CN1305M | 5.0 | 20% | ~16 | <70 | 5.0 | 470 | 2800 | -40~170 |
| CN1308M | 8.0 | 20% | ~16 | <70 | 4.0 | 470 | 3000 | -40~170 |
| CN1310M | 10.0 | 20% | ~16 | <70 | 4.0 | 470 | 3000 | -40~170 |
| CN152R5M | 2.5 | 20% | ~20 | <85 | 7.0 | 680 | 2800 | -40~200 |
| CN1503M | 3.0 | 20% | ~20 | <85 | 7.0 | 680 | 2800 | -40~200 |
| CN153R3M | 3.3 | 20% | ~20 | <85 | 7.0 | 680 | 2900 | -40~200 |
| CN1505M | 5.0 | 20% | ~20 | <85 | 6.0 | 680 | 3000 | -40~200 |
| CN1510M | 10.0 | 20% | ~20 | <85 | 5.0 | 680 | 3200 | -40~200 |
| CN1515M | 15.0 | 20% | ~20 | <85 | 4.0 | 680 | 3200 | -40~200 |
| CN1520M | 20.0 | 20% | ~20 | <85 | 4.0 | 680 | 3200 | -40~200 |
| CN2005M | 5.0 | 20% | ~26 | <110 | 7.0 | 1000 | 3000 | -40~200 |
| CN2010M | 10.0 | 20% | ~26 | <110 | 6.0 | 1000 | 3200 | -40~200 |
3. Reliability
| Item | Technical Requirement | Test Condition/Method |
|---|---|---|
| Solderability | Even wetting on the dipped part, tinning area 95% | After dipping the lead out end with flux, immerse it in a tin bath at a temperature of 245 5 and a depth of 15mm, with the tin surface 6mm away from the lower end of the NTC body, for 3 0.5 seconds. (Refer to IEC68-2-20 /GB2423.28 Test Ta) |
| Resistance To Soldering Heat | No visible damage, R/RN 20% (R =RN-RN') | Conduct the test according to IEC68-2-20 (GB2423. 28) test Tb. Using the welding groove method, the lead out end is dipped in flux and immersed in a tin groove with a temperature of 260 5 and a depth of 15mm. The tin surface is 6mm away from the lower end of the NTC body and maintained for 10 1 second. After recovering for 4-5 hours under the condition of 25 1 , retest the rated zero power resistance RN '. |
| Strength of lead terminal | No visible damage, R/RN 20% (R =RN-RN') | Conduct the test according to IEC68-2-21 (GB2423. 29) test U. Test Ua: tensile force of 10N for 10 seconds; Test Ub: Bend 90, pull 10N, and continue for 10 seconds; Twist 180, pull 5N, and continue for 10 seconds. After recovering for 4-5 hours under the condition of 25 1 , retest the rated zero power resistance RN '. |
| Temp. Cycling Testing | No visible damage, R/RN 20% (R =RN-RN') | Store for 30 mins each in environment temperature of Ta=-402 and Tb=1502, and cycle 5 times. Each high and low temperature cycle has a transition time of 5 minutes in an environment of 251. After conducting temperature cycling tests on the sample, take it out and place it at room temperature (25 1) for 4-5 hours before measuring the zero power resistance RN '. |
| Electrical Cycling Testing | No visible damage, R/RN 20% (R =RN-RN') | Environmental temperature: 25 1 . Cycle count: 1000 times, on/off: 5 s/55 s, test current: 5.0A. After placing the sample at room temperature (25 1 ) for 4-5 hours, measure its zero power resistance RN '. |
| LoadLife (Endurance) Testing | No visible damage, R/RN 20% (R =RN-RN') | Environmental temperature: 25 1 . The sample passes through a maximum working current of 5.0A. After 1000 24 hours, it is taken out and placed at room temperature (25 1 ) for 4-5 hours. The zero power resistance RN 'is measured. |
| Humidity Testing | No visible damage, R/RN 20% (R =RN-RN') | After being placed in an environment with a temperature of 40 2 and a relative humidity of 93 3% for 200 24 hours, take it out and place it at room temperature (25 1 ) for 1-2 hours to measure its zero power resistance RN '. |
| Insulation Withstand voltage | 700VDC, No breakdown or arcing during the test | Take the lead end of the thermistor as one electrode, and wrap the other electrode around the thermistor body with metal foil. Apply a voltage of 700VDC to both electrodes for 60 seconds. |
4. Storage Conditions
- Temperature: -10+40
- Humidity: 70%RH
- Term: 6 months (First-in/First-out)
- Place: Do not expose to corrosive gas, flammable/explosive gases, oil, water, chemical solutions, or direct sunlight.
- Handling after seal open: Reseal promptly or store in a sealed container with a drying agent.
5. Parameter Definition
| Item | Units | Definition |
|---|---|---|
| Zero power resistor R25 | The DC resistance value of the thermistor measured at the specified temperature (251). The measurement should be carried out under conditions where the change in resistance value caused by self-heating is negligible relative to the total measurement error. | |
| Resistance tolerance | % | The maximum allowable deviation range of the actual resistance value of the resistor from the nominal value. |
| Thermal dissipation coefficient | mW/C | The power consumed to raise the temperature of the thermistor by 1 . Usually the ratio of power consumption change to temperature change in thermistors at a specified temperature. |
| Thermal time constant | s | The time required for the temperature of a thermistor to drop to 63.2% of its initial and final temperature difference under zero power conditions. |
| Maximum steady-state current Imax | A | The maximum current that can be continuously applied to a thermistor under ambient temperature conditions of 25 . |
| Maximum impulse capacitance Cmax | F | The maximum allowable capacitance value of a capacitor connected to a thermistor under load conditions. |
| Material Constant B | K | Represents the material constant of negative temperature coefficient thermistors using the formula: B=T1T2/(T2-T1)ln (R1/R2) or B=2.303[T1T2/(T2-T1)]log (R1/R2), where T1=298.15K(25C), T2 = 323.15K(50C). |
| Working temperature range | The continuous operating temperature range for which the thermistor is designed under zero power conditions. |
Appendix Description
Thermal dissipation coefficient : Testing method refers to GB/T 6663.1. Measures and records the zero power resistance value of the thermistor at temperature Tb (typically 850.1 unless otherwise specified). For leaded thermistors, clamp with a fixture 25mm 1.5mm from the body. Place in a test box with a volume at least 1000 times larger than the thermistor, ensuring at least 75mm clearance from walls. Air in the box should be static at 255. Test circuit: Adjust current ITH until UTH/ITH is within 5% of the zero power resistance at Tb. Calculate =(UTH ITH)/(Tb-25)mW/C. Note: Results can vary due to test environment and methods.
Thermal time constant : Testing method refers to GB/T 6663.1. Measure zero power resistance at Tb=(358.152)K, Ta=(298.152)K, and Ti, where Ti:=Tb-(Tb-Ta)X0.632. Installation and circuit setup are similar to testing. Close contact AA, adjust ITH until UTH/ITH is 60%-80% of zero power resistance at Tb. Close contact BB and time from reaching zero power resistance at Tb until reaching zero power resistance at Ti. The elapsed time is the thermal time constant.
Maximum impulse capacitance Cmax: Capacitor CT is discharged through a series fixed resistor and thermistor. Charging voltage is 180/375 V, corresponding to (110/230+U)2. The capacitor undergoes 1000 discharge cycles. Test environment temperature is between 15 and 35, maintained within 2 of the starting temperature.
2510211530_TyoHM-CN2010MAC8DB4P0G_C49241823.pdf
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