• 1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply
  • 1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply
  • 1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply
  • 1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply
  • 1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply
1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply

1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply

Product Details:

Place of Origin: DONGGUAN,GUANGDONG,CHINA
Brand Name: AMPFORT
Certification: UL
Model Number: MF71-1D-25MY

Payment & Shipping Terms:

Minimum Order Quantity: 1000PCS
Price: 0.5~1USD/PC
Packaging Details: Bulk,
Delivery Time: 10 workdays
Payment Terms: T/T, Western Union, MoneyGram
Supply Ability: 500000pcs per day
Get Best Price Contact Now

Detail Information

Name: NTC Thermistor 1D-25 Resistance @25C: 1 Ohm
Resistance Tolerance: +/-20% Norminal Dia: 25mm
B Contact: 2950 10% Max Static Current: 20A
Experimental Capacitance 240V: 1200uF Rated Power: 7W
Dissipation Factor: 30mw/C Thermal Time Constant: 130s
High Light:

High Inrush Current Power NTC Thermistor

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20A Power NTC Thermistor

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Switching Power Supply 1 Ohm Thermistor

Product Description

 

High Inrush Current Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A For Switching Power Supply

 

Description Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A

 

* NTC Thermistor is a kind of resistor with negative temperature coefficient.It's resistance decreases with the temperature rising. According to its different uses, the thermistor may be packaged in various forms with different performances.

* MF71 Series Thermistor was applied to restrain surge current and protect overvoltage in various power supplies,IC,circuit.

* MF11 Series thermistor are widely applied to compensate temperature variation and measure temperature

1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply 0

 

 

Size Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A (mm)

 

1 Ohm 20A High Inrush Current Power NTC Thermistor For Switching Power Supply 1

MODEL Dmax P±1 d±0.05 Amin Tmax
MF71-1D-25MY 30 7.5/10 1.0 7 8

 

 

Electrical Characteristic Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A

 

Type

1D-25
Zero Power Resistance at 25℃  
1±20% ohm
maximum steady state current at 25℃  
20A
Capacitance at 240Vac  
1200μF (240V)
   
Thermal Dissipation Constant (δ)
≧30 mw/℃
Thermal Time constantτ(t)  
≦130S
Operation Temperature  
-40~+200℃
Rating power (Pmax)  
7.0W

 

 

Performance Characteristics Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A

 

Item

Test Methods

Specifications

Zero Power Resistance at 25℃

Resistance shall be measured at DC current applied when the self heat generation does not occur at room ambient (25.0±0.2℃)

1±20% ohm
Thermal Dissipation Constant

Equivalent to the required power to rise temperature of the thermistor up to 1℃ in the air and without cooling of airflow. the unit of the constant is mw/℃

≥30mw/℃
Maximum allowable steady-state current (Imax)

Maximum allowable steady-state DC current applied at the specified temperature without cooling of airflow

20A
Thermal Time constant

The period of time when the temperature of the specimens is (1-1/e) times the temperature difference shall be measured when the ambient temperature is changed.(e:2.71828)

≤130S
Voltage withstanding (Between Terminals and coating)

An AC Voltage of 1000V shall be applied. Between the terminals and the insulating coating for one minute at room ambient.

No substantial damage

ΔR/R≤±20%

Insulation Resistance (Between Terminals and coating)

Insulation resistance between terminals and the insulating coating shall be measured at 1000Vdc with one minute electrification, and at room ambient.

≥500MΩ
 

 

Packing Specification Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A

 

(PCS)

Quantity of each inter-box

(PCS)

Quantity of each outer-box

200 Appr.2000

 

 

Lead-free wave soldering process temp. Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A


1. Preheat temp.:100-120 ℃, Time:86-100/Sec, Heating rate:1-2 ℃/Sec
2. Parts after preheating, into the 255-260 ℃ molten tin, immersion time:2.5-3.5/Sec

3. Parts after welding cooling rate of 1-3 ℃/Sec
4. Total welding time was 3.5Min.
In order to ensure the parts had to withstand thermal shock wave soldering, specification of heat-resistant parts must be higher than the temperature curve of wave soldering temperature, the largest is above 260 ℃

 

 

Storage Conditions Of The Power NTC Thermistor MF71 1D-25 1Ohm 25mm 20A

 

1. Storage Temperature : -10℃~+40℃
2. Relative Humidity : ≦75%RH
3. Keep products away from corrosive such as sulfur, chlorine gas or acid, or it may cause oxidization of electrode, resulting in poor solderability
4. The products can be used in two years under storage condition.

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