Epoxy Sealed NTC Thermistor 30000ohm 47000 ohm 5000 ohm / R with size 2.2mm X3.5mm
| Code number and specifications: 
Features: 1. Body sizeΦ2.2mm X3.5mm
2. resistance range: 30Kohm 47Kohm 50Kohm 3. B value range: 3950k
4. -30 ~ +120℃operating temperature range
5. RoHS compliant Recommended applications Temperature sensor,home electronics,electronic clock,electric table-board,automobile electrics,CPU fan etc |
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-MFEB－3002-3950 | 30 | 1,2,3,
5,10 | 25/50 | 3950 | 1,2,3,5 | 10 | ≧2 | ≦3 | -30～+120 |
| WS-MFEB－4702-3950 | 47 | 25/50 | 3950 |
| WS-MFEB－5002-3950 | 50 | 25/50 | 3950 |
Ps.:can be tailored according to clients’ demand
operating current :
In 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.R is for zero-power resistance in KOHM
6.final current is in mA
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% |
| 2 | High temperature storage | IEC 60068-2-21 | Highest operaing temperature*1000H | No visible damage
∣△R25/R25∣≦ 1% |
| 3 | Thermal shock | IEC 60068-2-14 | 10 cycles | | | No visible damage
∣△R25/R25∣≦ 1% |
| 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% |
| 5 | Life test | IEC 60539-1
4.26 | 25±5℃, Pmax; 1000hrs
(internal test: 56 days) | No visible damage
∣△R25/R25∣≦ 1 % |
● storage conditions:
1. storage temperature: -10℃~+40℃
2.relative humidity:≦75%RH
●Period of Storage:one year
Payment and Shipping:
1, Lead time about 3~5 days.
2, Payment: T/T; Western union; Paypal .
3, Shipping: by DHL, Fedex, TNT, UPS, EMS ect
Dimensions:
Contact: Angel Sun
Tel: +86-13528847020
Email: Admin@winsunhk.cn
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Epoxy Sealed NTC Thermistor 30000ohm 47000 Ohm 5000 Ohm / R With Size 2.2mm X3.5mm Images
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