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SL22 B57238S Silicone Disc NTC Thermistor 22R 5A 15mm For Inrush Current Limiting

Categories Power NTC Thermistor
Brand Name: AMPFORT
Model Number: MF73T-1 22/5
Certification: CQC,TUV
Place of Origin: Dongguan,Guangdong,China
MOQ: 10000PCS
Price: 0.2~0.3 USD/PC
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 10,000,000 PIECES PER MONTH
Delivery Time: 10 workdays
Packaging Details: Bulk
Name: Disc NTC Thermistor
Coating material: Black silicone
Wire material: Tin plated copper wire
Shelf life: 1 year
R25: 22Ω±20%
B-value: 3200K±10%
I max: 5A
Operating temperature: -40℃ ~ 170℃
Max rated power: 3.6W
Insulation resistance: ≥500 MΩ
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SL22 B57238S Silicone Disc NTC Thermistor 22R 5A 15mm For Inrush Current Limiting


SL22 B57238S Silicone Disc NTC Thermistor 22R 5A 15mm For Inrush Current Limiting


Description Of The Disc 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 thermistor’s 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.


Characteristics Of The Disc NTC Thermistor


- Small size,strong power and strong capability of surge current protection
- Big material constant(B value),small remain resistance,low power consumption.
- Large steady state current,long life,high reliability
- Easy PCB installation,completed series,wide application range.


Recommended Application Of The Disc NTC Thermistor


- High power switch power,Power conversion,UPS power
- High power battery charger,electric vehicle battery charger
- High power LED light,high power electronic energy saving lamps and other lighting lamps


Dimensions Of The Disc NTC Thermistor (mm)


DL1L2FTdCoating materialWire material
Max 17.5Min 175±27.5±1Max 6.00.8±0.05Black siliconeTin plated copper wire

Body diameter Φ15mm Of The Disc NTC Thermistor


P/NR25±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)Max impulse capacitance (uF)240VAC
MF73T-1 0.7/110.72600110.0245.01000
MF73T-1 1/10.51260010.50.0301000
MF73T-1 1.3/101.32600100.034820
MF73T-1 1.5/101.52600100.036820
MF73T-1 2/9.5226009.50.040820
MF73T-1 2.5/9.52.526009.50.044820
MF73T-1 3/93280090.046820
MF73T-1 5/85300080.058820
MF73T-1 6/76300070.069680
MF73T-1 7/77300070.078680
MF73T-1 8/78300070.084680
MF73T-1 10/710320070.098680
MF73T-1 12/612320060.116680
MF73T-1 15/615320060.125680
MF73T-1 16/616320060.129680
MF73T-1 20/620320060.136680
MF73T-1 22/52232005680
MF73T-1 30/530320050.165680
MF73T-1 47/447320040.257680
MF73T-1 55/455320040.287680
MF73T-1 120/2.512034002.50.652680

Reliability Of The Disc NTC Thermistor


ItemTest conditions and methodsTechnical requirements
Terminal strengthPull: wire diameter(mm) pulling force (N) 0.5<d≤0.8 10,0.8<d≤1.25 20 time:10±1 secNo obvious damage, R25 ΔR/R≤±25%
Solderabilitytemperature : 245±5℃ for 2-3secthe coverage area should be more than 95%.
Welding heat resistantTin pan temperature : 260±5℃ , immersion depth is apart from the body resistance 6mm,time:10±1secR25 ΔR/R≤±25%
Steady humidity and heat

Temp:40℃±2℃

humidity:93±2%

Time :1000hrs

R25 ΔR/R≤±25%
Rapid changes in temperature-40℃30min→25℃5min→170℃30min →25℃5min, 5cyclesR25 ΔR/R≤±25%
High temperature storageTemp : 170℃±5℃, Time :1000hrsR25 ΔR/R≤±25%
The largest steady current durabilityContinue to exert maximum static electricity thermistor at room temperature to 1000 + 24 hR25 ΔR/R≤±25%
Maximum capacitanceExert Max allowable electric capacity, 5 times intermittently make 50 ms, break the thermal time constant of a loop, toward a thermistor 1000 - cycle.R25 ΔR/R≤±25%

Matters need attention Of The Disc NTC Thermistor


1 This product USES: Inhibition of surge current;

2 When the soldering iron welding, the welding place at least 2 mm space from coating layer and the welding temperature should be lower than 360 ℃, welding time < 3 ses

3 Storage temp:-10℃ ~ 40℃;storage humidity :≤75% RH;

4 Avoid air corrosion or sunlight

5 Remake sealed storage after package opening.

6 Shelf life: 1 year

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