Radial Leaded Ultra Big Power NTC Thermistor MF73 For Switching Power Supply
I Description Of The Ultra Big Power NTC Thermistor MF73
High-Power NTC Thermistors are used to reduce the inrush current that occurs when an electrical device is switched on. High inrush current is the result of the maximum instantaneous input current drawn by an electrical device during the initial power up. As technology continues to advance, most systems today run efficiently and maintain a low impedance which in turn contributes to high inrush current.
Additionally, devices that produce alternating current such as electric motors or transformers can draw several times their steady state current at switch on. Although this additional draw of inrush often lasts less than ½ of a normal 60 hertz cycle, that is enough time to cause possible damage to the equipment.
II Application Of The Ultra Big Power NTC Thermistor MF73
* All kinds of power supply,UPS power supply,Switching power supply
* EV charger,charging pile
* Motor driver,superpower server motor driver,logic controller
* High power plasma electric welder,cutting machine,super power lightning lamp
* Nuclear managetic resonance equipment,super power audio power amplifier,high circle transformer
* The solar panel arrays with high capacity power inverter
* The industrial robot drived by high voltage power supply, intelligent electric cabinet with low voltage.
IV Specification Of The Ultra Big Power NTC Thermistor MF73
Body diameter 40mm
P/N R25±20%() Thermal sensitive index B±10%(K) Max steady state current Imax(A) Approx R of Max current Rmax() 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 â?¥55 â?¤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 45mm
P/N R25±20%() Thermal sensitive index B±10%(K) Max steady state current Imax(A) Approx R of Max current Rmax() 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 50mm
P/N R25±20%) Thermal sensitive index B±10%(K) Max steady state current Imax(A) Approx R of Max current Rmax 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
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