Epoxy Sealed MFEL Series 5K 10K 20K 50K 200K Ohm NTC Thermistor For Switching Power Supply
Epoxy Sealed MFEL Series 5K 10K 20K 50K 200K Ohm NTC Thermistor For Switching Power Supply
Features
1. Body sizeΦ1.1mm X2.0mm
2. resistance range:5K OHM~200k OHM
3. B value range:3200~4400K
4. -30 ~ +120°Coperating temperature range
5. RoHS compliant
Characteristics
Part no. | Zero power resistance | Tolerance of R25 | B value | Tolerance of B value | Max. Power Dissipation | Dissipation Factor | Thermal | Operating temperature range | |
R25 (KΩ) | ( ±%) | (K) | (±%) | Pmax(mW) | δ(mW/°C) | τ(Sec.) | (°C) | ||
MFEL-5001-3550 | 5 | 1,2,3, | 25/50 | 3550 | 1,2,3,5 | 10 | ≥2 | ≤3 | -30~+120 |
MFEL-1002-3550 | 10 | 25/50 | 3550 | ||||||
MFEL-1002-3950 | 10 | 25/50 | 3950 | ||||||
MFEL-1002-3435 | 10 | 25/85 | 3435 | ||||||
MEFL-1002-3270 | 10 | 25/85 | 3270 | ||||||
MFEL-1002-3700 | 10 | 25/85 | 3700 | ||||||
MFEL-1002-3470 | 10 | 25/85 | 3470 | ||||||
MFEL-1002-3975 | 10 | 25/85 | 3975 | ||||||
MFEL-2002-3950 | 20 | 25/50 | 3950 | ||||||
MFEL-2002-4200 | 20 | 25/50 | 4200 | ||||||
MFEL-3002-3950 | 30 | 25/50 | 3950 | ||||||
MFEL-4702-3950 | 47 | 25/50 | 3950 | ||||||
MFEL-5002-3950 | 50 | 25/50 | 3950 | ||||||
MFEL-1003-3950 | 100 | 25/50 | 3950 | ||||||
MFEL-1003-4000 | 100 | 25/50 | 4000 | ||||||
MFEL-1005-3975 | 100 | 25/85 | 3975 | ||||||
MFEL-1003-4300 | 100 | 25/85 | 4300 | ||||||
MFEL-2003-4000 | 200 | 25/85 | 4000 | ||||||
MFEL-2003-4200 | 200 | 25/85 | 4200 | ||||||
MFEL-2003-4300 | 200 | 25/85 | 4300 | ||||||
MFEL-2003-3950 | 200 | 25/50 | 3950 | ||||||
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/°C
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
Storage conditions
1. storage temperature: -10°C~+40°C
2.relative humidity:≤75%RH
Period of Storage:one year
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