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MF74 Ultra-high Power NTC Thermistor Series

The MF74 series R25(Ω):0.5~30Ω,rated power Pmax at +25℃: 10W.

  • Item No :

    MF74
  • Zero Power Resistance at 25℃ :

    0.5~30Ω
  • B Value at 25/50°C :

    2400~3200K
  • Max steady current :

    12~40A
  • Temperature Range :

    -55~200℃
  • Max allowable capacity value :

    680~4700μF
  • Thermal dissipation Coefficient :

    118~125mW/℃
  • Thermalcooling time constant :

    340~350sec
  • Insulation resistance :

    ≥500MΩ
  • Withstand voltage :

    No breakthrough and flash over

MF74 Ultra-high Power NTC Thermistor Series

Product Description

Power type NTC suppresses the surge current at startup. Its zero power resistance value suppresses the surge current at the moment of startup so that the surge current at the moment of startup will not be too large.

Product Features

    1. Application scope:

         ●Conversion power supply, switching power supply, UPS power supply.

        ●Various high-power lighting fixtures.

        ●Electric heaters.

    2.Features:

         ●Reliable structure and easy installation.

        ●Strong ability to suppress surge current.

        ●The working steady-state current is large.

        ●Can continue to work under larger steady-state current.

    3.Installation method:

        a) For use, the resistor chip is installed into a cylindrical porcelain shell, and the two ends are led out with copper screw caps;

        b) For vibration and impact tests, the upper and lower copper screw caps are fixed.

Product Display

Product Specifications

     

 

 

Main Techno-Parameter
Part No. R25
(Ω)
Max Steady State Current
Imax(A)
Approx.R of Max.Current
Rmax(Ω)
Dissi Coef
(mW/)
Thermal time Constant
(S)
Operating temp.
()
0.5/40 0.5 40 0.00875 118 340 -55~+200
0.7/36 0.7 36 0.0110 118 340
  1/32 1 32 0.0137 118 340
1.3/27 1.3 27 0.0192 118 340
1.5/27 1.5 27 0.0206 118 340
2/25 2 25 0.0240 120 340
2.5/25 2.5 25 0.0252 120 350
  3/23 3 23 0.0293 123 350
  4/21 4 21 0.0340 123 350
  5/21 5 21 0.0364 123 350
6/18 6 18 0.0494 123 355
8/18 8 18 0.0525 125 360
10/18 10 18 0.0555 125 360
12/15 12 15 0.0622 125 345
16/15 16 15 0.0688 125 345
20/15 20 15 0.0745 125 345
25/15 25 15 0.0857 125 345
30/12 30 12 0.1170 125 350
                                                          
Why Choose us?

20+ Years Industry Experience

Founded in 2002. Four self-built factories.

The core component of all NTC temperature sensors, the high-performance temperature measuring NTC thermistor, is all produced in-house. It has a complete series and diverse structures, which can meet the precise temperature measurement in different temperature areas from low temperature to medium low temperature to medium and high temperature. These High-performance temperature measuring NTC thermistors have passed a series of safety certifications at home and abroad.

 

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Shiheng has been focusing on the R&D and production of thermistors for 22 years, focusing on customizing them for you.
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