Active Member
|
[China]
Address: 311EF, B Buliding, Zhengzhong Time Square, Longgang District, Shenzhen City, China.
Contact name:Angel Sun
Shenzhen Winsun Technology Co., Ltd. |
|
|
Body size 1.1x2.2mm Epoxy Sealed NTC Thermistor with enameled wire
from 1K ohm to 500K ohm
Features:
1. Body sizeΦ1.1mm X2.0mm
2. resistance range:1K OHM～500k OHM
3. B value range:3200～4400K
4. -30 ~ +120℃operating temperature range
5. RoHS compliant
Recommended applications
Rice cooker, microwave oven, electric cooker, coffee pot, electric
blanket, soy sauce pot, toaster 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-MFEL－5001-3550 | 5 | 1,2,3, 5,10 | 25/50 | 3550 | 1,2,3,5 | 10 | ≧2 | ≦3 | -30～+120 |
| WS-MFEL－1002-3550 | 10 | 25/50 | 3550 | ||||||
| WS-MFEL－1002-3950 | 10 | 25/50 | 3950 | ||||||
| WS-MFEL－1002-3435 | 10 | 25/85 | 3435 | ||||||
| WS-MEFL－1002-3270 | 10 | 25/85 | 3270 | ||||||
| WS-MFEL－1002-3700 | 10 | 25/85 | 3700 | ||||||
| WS-MFEL－1002-3470 | 10 | 25/85 | 3470 | ||||||
| WS-MFEL－1002-3975 | 10 | 25/85 | 3975 | ||||||
| WS-MFEL－2002-3950 | 20 | 25/50 | 3950 | ||||||
| WS-MFEL－2002-4200 | 20 | 25/50 | 4200 | ||||||
| MFEL－3002-3950 | 30 | 25/50 | 3950 | ||||||
| MFEL－4702-3950 | 47 | 25/50 | 3950 | ||||||
| WS-MFEL－5002-3950 | 50 | 25/50 | 3950 | ||||||
| WS-MFEL－1003-3950 | 100 | 25/50 | 3950 | ||||||
| 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 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
R－T characteristic curve
Contact: Angel Sun
Tel: +86-13528847020
Email: Admin@winsunhk.cn
Skype: Angelsun618
Whatsapp: 13528847020
Wechat: 13528847020
QQ: 553695308
