MF75 Super Power NTC Thermistor For Audio Power Amplifier Inrush Current Protection
I Description Of The MF75 Super Power NTC Thermistor
Inrush current is the momentary surge of current created when power is turned on to motors,transformers,power suppliers and heating elements. The more power required by industrial equipment,the larger the inrush current. It can effectively quench the inrush current by means of in series with power NTC thermistor in return circuit of power supply. The thermistors resistance decreases dramatically following the inrush,allowing the steady state curent to flow with very little resistance.This effect provides inrush current protection, yet allows efficiency during normal operation.The power NTC Thermistor produced by Dongguan Ampfort Electronics Co.,Ltd. with large scale,especially MF73T,MF73,MF74,MF75 serial products with big size,which can be applied in such inrush protection with industrial level as industrial robots and automation.
II Application Of The MF75 Super Power NTC Thermistor
> Nuclear magnetic resonance equipment
> Super power audio power amplifier
> High power circle transformer
> The solar panel arrays with high capacity power inverter
> The industrial robot drived by high voltage power supply
IV Specification Of The MF75 Super Power NTC Thermistor
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) Dissipation factor(mW/C) Thermal time constant (s) Max impulse capacitance (uF)240VAC
MF75-0.2/55 0.2 2600 55 0.007 30 55 350 8000
MF75-1/45 1 2600 45 0.01 6800
MF75-2/35 2 2600 35 0.014 6800
MF75-5/27 5 3000 27 0.028 4700
MF75-8/22 8 3200 22 0.034 3300
MF75-10/21 10 3200 21 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) Dissipation factor(mW/C) Thermal time constant (s) Max impulse capacitance (uF)240VAC
MF75-0.2/70 0.2 2600 70 0.006 45 70 480 11500
MF75-0.5/55 0.5 2600 55 0.007 8000
MF75-1/52 1 2600 52 0.009 8000
MF75-2/45 2 2600 45 0.012 8000
MF75-5/35 5 3000 35 0.025 6800
MF75-10/28 10 3200 28 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) Dissipation factor(mW/C) Thermal time constant (s) Max impulse capacitance (uF)240VAC
MF75-0.2/90 0.2 2600 90 0.004 55 90 650 15000
MF75-1/60 1 2600 60 0.008 11500
MF75-2/50 2 2600 50 0.011 11500
MF75-5/40 5 3000 40 0.022 8000
MF75-8/32 8 3200 32 0.028 6800
MF75-10/30 10 3200 30 0.03 6800
Supplier: Soda ash
sodium sulphate anhydrous
sodium sulphite
diethylene glycol (deg)
fumed silica
menthol crystal
base oil 150n, bs 150, 600n
rpo (rubber process oil)
lioh (lithium hydroxide)
hco (hydrogenated castor oil)
12 hsa (hydroxy stearic acid)
additive for lubricant and grease
aromatic chemicals
pvp povidone iodine
pvp povidone k30
h2o2 (hydrogen peroxide)
Services: Exporting of industrial chemicals, petrochemical and ethylene glycol series
Buyer: Soda ash
sodium sulphate anhydrous
sodium sulphite
diethylene glycol (deg)
fumed silica
menthol crystal
base oil 150n, bs 150, 600n
rpo (rubber process oil)
lioh (lithium hydroxide)
hco (hydrogenated castor oil)
12 hsa (hydroxy stearic acid)
additive for lubricant and grease
aromatic chemicals
pvp povidone iodine
pvp povidone k30
h2o2 (hydrogen peroxide)
Supplier: Activated Carbon, Aluminium Hydroxide, Aluminium Sulphate, Calcium Hypochlorite, Caustic Soda, Cetyl Stearyl Alcohol, Citric Acid, Cocoa Powder, Corn/Maize Starch, Corrosion Inhibitor, Dextrose Monohydrate, Ferric Chloride, Ferro/Silico Manganese, Glacial Acetic Acid, Glycerin, Hydrated Lime, Liquid Chlorine Gas, MIBC, Phosphoric Acid 85%, PAC, Poly Vinyl Acetate, Polyelectrolyte, Polymer, Refined Glycerine, Soap Noodles, Soda Ash, Sodium Sulphate, Soya Lecithin, Sulphur Granular, Sulphuric Acid 98%, Talofloc, Taloflot, Titanium Dioxide, Urea Formaldehyde Resins, Xanthate. Beans, Chickpeas, Lentils, Maize, Millet, Pulses, Rice, Sesame Seeds, Sorghum, Soya Meal, Turmeric. Motors, Aluminium/Copper Wire Rods, Automation & PLC, Cable Accessories, CR/HR/Galvanized Steel, Conveyor Belts, Energy Meters, Generators, BESS Tenders, HMS/LMS Scrap, Industrial/Mining Equipment, Perforated/Structural Steel, Pumps, Sensors, Steel Coils/Pipes/Sheets, Transformers, Water Meters, Wires & Cables.
Supplier: Leather travel bags, toiletry bag, satchels bags, briefcase, office bag, professional briefcase bags, messenger bag, cross body bags, ladies purse, shopping bags, tool roll up pouch, matka bags, wallets, money clipper, ladies wrist wallet, money/coin pouch, portfolios, pencil case, knife roll, apron, backpack, photo album, journal, leather mirrors, leather furniture, leather tray & boxes, leather baskets, boxes, watch case and leather bar items, leather jackets, leather skirts, leather pants, domestic home appliances, mixer grinder, juicer mixer grinder, food processor, iron, dry iron, steam iron, induction cooker, gas cooktop
Supplier: Minerals, metals, gold, clothes, urea, seeds and plants,foods, grains, all personal care, industrial raw material and automotive items, all river sand, cement, clinker, computers & electronics and electrical, handicraft items, npk, fertilizers t shirt, blanket,dry fruits, animal feeds, towel, bedsheets, toys, all grocery, copper wire ,copper ore concentrate, zinc ore concentrate, lead concentrate, fly ash, a4 paper, a3 paper, craft paper, occ, ldpe, hdpe , pvc resin, petroleum products, jp54, jet a1, crude oil, blco , biodiesel, diesel, fuel, coal, d2, petcock, pulses, mustard oil, spices , rice sanitizer, gloves, medical products, , old ships, lng, lpg, all groceries items, food products, hms1 and hms2, fish, chicken feet, chicken paws, agri & food processing agriculture products, fertilizers, seeds, farm products grains, fruits, vegetables, river sands, aggregates, pvc electrical wire, rice, charcoal, wheat flour pcking bags, decorative items
Services: Export, import, merchant export import, reseeler, container availability, tank farm assistance, land transportation, land port services
Buyer: All metals, minerals, petroleum products, food products and paper products
