Product Details:
Payment & Shipping Terms:
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| Color: | Red And Black | Reistiance: | 1Kohm To 500Kohm |
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| B Value: | 3950-4200k | Storage Temperature: | -10 ~ +40℃ |
| Body Size: | 1.1x2.2mm | Compliant: | Rohs |
| High Light: | ntc type thermistor,10k ntc thermistor |
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Body size 1.1x2.2mm Epoxy Sealed NTC Thermistor with enameled wire 100K ohm 200K ohm / R
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Features:
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Characteristics:
| Part no. | Zero power resistance @ 25°C |
Tolerance of R25 | B value | Tolerance of B value | Max. Power Dissipation At 25°C |
Dissipation Factor | Thermal Time constant |
Operating temperature range | |
| R25 (KΩ) | ( ±%) | (K) | (±%) | Pmax(mW) | δ(mW/°C) | τ(Sec.) | (°C) | ||
| WS-MFEL－1003-3950 | 100 | 1,2,3, 5,10 |
25/50 | 3950 | 1,2,3,5 | 10 | ≧2 | ≦3 | -30～+120 |
| WS-MFEL－1003-4000 | 100 | 25/50 | 4000 | ||||||
| WS-MFEL－1005-3975 | 100 | 25/85 | 3975 | ||||||
| WS-MFEL－1003-4300 | 100 | 25/85 | 4300 | ||||||
| WS-MFEL－2003-4000 | 200 | 25/85 | 4000 | ||||||
| WS-MFEL－2003-4200 | 200 | 25/85 | 4200 | ||||||
| WS-MFEL－2003-4300 | 200 | 25/85 | 4300 | ||||||
| WS-MFEL－2003-3950 | 200 | 25/50 | 3950 | ||||||
| WS-MFEL－2003-4200 | 200 | 25/50 | 4200 | ||||||
Ps.:can be tailored according to clients’ demand
operating currentIn order to make the test more accurate, the running current should be as less as possible. The following formula is suggested:
I＝sqrt(0.005δT^2/(B*R))
PS.:1.sqrt is for square root
2. δ is for dissipation constant in mW/℃
3. T is for temperature in Kelvins
4. B is for the index of the thermal sensitivity
5. final current is in mA
R－T characteristic curve
Reliability test
| No. | item | standard | Test conditions | specifications | ||||
| 1 | Low temperature storage | IEC 60068-2-21 | Lowest operating temperature*1000H | No visible damage ∣△R25/R25∣≦ 1% |
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| 2 | High temperature storage | IEC 60068-2-21 | Highest operaing temperature*1000H | No visible damage ∣△R25/R25∣≦ 1% |
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| 3 | Thermal shock | IEC 60068-2-14 | 10 cycles | No visible damage ∣△R25/R25∣≦ 1% |
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| step | temperature(℃) | period(ms) | ||||||
| 1 | Low temperature ±5℃ |
30±3 | ||||||
| 2 | Room temperature | 5±3 | ||||||
| 3 | High temperature ±5℃ |
30±3 | ||||||
| 4 | Room temperature | 5±3 | ||||||
| (internal test: 100 cycles) | ||||||||
| 4 | Constant temperature and humidity | IEC 60068-2-3 | 60℃, 93%±3% RH; 1000H (internal test: 56 days) |
No visible damage ∣△R25/R25∣≦ 1% |
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| 5 | Life test | IEC 60539-1 4.26 |
25±5℃, Pmax; 1000hrs (internal test: 56 days) |
No visible damage ∣△R25/R25∣≦ 1 % |
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