Fast Response Speed 5D20 NTC Thermal Resistor Longevity Of Service High Reliability
Description:
The MF72 power NTC thermistor is a kind of semiconductor ceramic element that mostly made from transition metal oxide material, and belongs to negative temperature thermistors. When you tune on an electrical equipment ,the surge current can be restrained by a power NTC thermistor connected in series with the power circuit .Because of the continuing action of current, temperature of power NTC thermistor raising, the resistance will rapidly drop to a small value, the consumed power can be ignored. So it can not affect normal operating current. Therefore, using power NTC thermistor is a most effectively amd most brief measure to restrain surge current, protecting electrical equipment from destruction.
The main advantage
The main feature of a thermistor is its high sensitivity. Its temperature coefficient of resistance is 10-100 times that of metal. It can detect temperature changes of 10-6°C; the working temperature range is wide, the normal temperature device is suitable for -55°C ~ 315°C, the high temperature device is suitable for temperatures above 315°C (before 2000°C), and the low temperature device is suitable for- 273°C ~ 55°C; small size, can measure the temperature of the voids, cavities and blood vessels in the human body, which cannot be measured by other thermometers; easy to use, the resistance value is in the range of 0.1 ~ 100kΩ; any choice between them; easy to process into Complex shape, mass production; good stability, strong overload capacity.
Applications
Coversion power-supply, switch power, ups power
Electronic energy saving lamps,electronic ballast and all kinds of electric heater
All kinds of RT, display
Bulb and other lighting lamps
Product parameters
| model | Rated zero power
resistance R25 (Ω) | Max.steady
State current(A) | Residual
Resistance(Ω) | B25/85
(K) | Themal time
Constant(s) | Dissipation
factor(mw/℃) |
| 1.3D-13 | 1.3 | 7 | 0.089 | 2700 | ≤70 | ≥13 |
| 1.5D-13 | 1.5 | 7 | 0.089 | 2700 |
| 2.5D-13 | 2.5 | 6 | 0.108 | 2700 |
| 3D-13 | 3 | 6 | 0.145 | 2700 |
| 4D-13 | 4 | 5 | 0.146 | 2700 |
| 4.7D-13 | 4.7 | 5 | 0.147 | 2800 |
| 5D-13 | 5 | 5 | 0.15 | 2800 |
| 6D-13 | 6 | 4 | 0.211 | 2800 |
| 6.8D-13 | 6.8 | 4 | 0.228 | 3000 |
| 7D-13 | 7 | 4 | 0.232 | 3000 |
| 8D-13 | 8 | 4 | 0.275 | 3000 |
| 10D-13 | 10 | 4 | 0.272 | 3000 |
| 12D-13 | 12 | 3 | 0.483 | 3000 |
| 15D-13 | 15 | 3 | 0.488 | 3100 |
| 16D-13 | 16 | 3 | 0.454 | 3100 |
| 18D-13 | 18 | 3 | 0.511 | 3200 |
| 20D-13 | 20 | 3 | 0.568 | 3200 |
| 22D-13 | 22 | 3 | 0.581 | 3200 |
| 25D-13 | 25 | 2 | 0.625 | 3200 |
| 30D-13 | 30 | 2 | 0.696 | 3200 |
| 33D-13 | 33 | 2 | 0.765 | 3200 |
| 47D-13 | 47 | 2 | 1.091 | 3200 |
| 50D-13 | 50 | 2 | 1.161 | 3200 |
Technical Specification
Body diameter Φ40mm
| P/N | R25±20%(Ω) | Thermal sensitive index B±10%(K) | Max steady state current Imax(A) | Approx R of Max current Rmax(Ω) | Max power dissipation Pmax(W) | Thermal time constant (mW/C) | Thermal time constant (s) | Max impulse capacitance (uF)240VAC |
| MF73-0.2/50 | 0.2 | 2600 | 50 | 0.007 | 25 | ≥55 | ≤350 | 8000 |
| MF73-0.5/40 | 0.5 | 2600 | 40 | 0.008 | 6800 |
| MF73-3/28 | 3 | 2800 | 28 | 0.02 | 6800 |
| MF73-5/25 | 5 | 3000 | 25 | 0.028 | 4700 |
| MF73-8/20 | 8 | 3200 | 20 | 0.034 | 3300 |
| MF73-10/19 | 10 | 3200 | 19 | 0.038 | 3300 |
Body diameter Φ45mm
| P/N | R25±20%(Ω) | Thermal sensitive index B±10%(K) | Max steady state current Imax(A) | Approx R of Max current Rmax(Ω) | Max power dissipation Pmax(W) | Thermal time constant (mW/C) | Thermal time constant (s) | Max impulse capacitance (uF)240VAC |
| MF73-0.2/65 | 0.2 | 2600 | 65 | 0.006 | 30 | ≥70 | ≤480 | 11500 |
| MF73-0.5/50 | 0.5 | 2600 | 50 | 0.007 | 8000 |
| MF73-2/40 | 2 | 2600 | 40 | 0.012 | 8000 |
| MF73-5/30 | 5 | 3000 | 30 | 0.025 | 6800 |
| MF73-10/24 | 10 | 3200 | 24 | 0.032 | 4700 |
Body diameter Φ50mm
| P/N | R25±20%(Ω) | Thermal sensitive index B±10%(K) | Max steady state current Imax(A) | Approx R of Max current Rmax(Ω) | Max power dissipation Pmax(W) | Thermal time constant (mW/C) | Thermal time constant (s) | Max impulse capacitance (uF)240VAC |
| MF73-0.2/80 | 0.2 | 2600 | 80 | 0.004 | 36 | ≥90 | ≤650 | 15000 |
| MF73-0.5/60 | 0.5 | 2600 | 60 | 0.006 | 11500 |
| MF73-1/56 | 1 | 2600 | 56 | 0.008 | 11500 |
| MF73-3/40 | 3 | 2800 | 40 | 0.015 | 11500 |
| MF73-5/35 | 5 | 3000 | 35 | 0.022 | 8000 |
| MF73-6.8/32 | 6.8 | 3000 | 32 | 0.025 | 8000 |
| MF73-10/27 | 10 | 3200 | 27 | 0.03 | 6800 |
Product Process
Product Tags:
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Fast Response Speed NTC Power Thermistor / NTC 5D 20 Thermistor Images
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