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20mm NTC Power Thermistor 20D , Semiconductor Ceramic Element
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20mm NTC Power Thermistor 20D , Semiconductor Ceramic Element

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20mm NTC Power Thermistor 20D , Semiconductor Ceramic Element

 

Quick Detail:

 

• Small Size and fast response

• High Power handling capability

• Fast response to surge current

• High material constant (B value)

• Low residual resistance

• Wide operating temperature range -55 to +200C

• R25 allowable tolerance is ±20%

• Long-term Stability and Reliability

 

 

Description:

 

The MF72 power NTC thermistor is a kind of semiconductor ceramic element that mostly made from transition metal oxide material, and belongs to negative temperature thermistors. When you tune on an electrical equipment ,the surge current can be restrained by a power NTC thermistor connected in series with the power circuit .Because of the continuing action of current, temperature of power NTC thermistor raising, the resistance will rapidly drop to a small value, the consumed power can be ignored. So it can not affect normal operating current. Therefore, using power NTC thermistor is a most effectively amd most brief measure to restrain surge current, protecting electrical equipment from destruction.

 

 

Applications:

 

Can be installed into the power circuits of:

• Power supplies and inverters

• Uninterruptible Power Supplies

• Energy saving lamps

• Electronic Ballasts

• Filament Protection of various types of lamps

• Some types of heaters

• For higher power circuits ask about the MF73

 and MF74 series surge suppressors.

 

 

Specifications:

 

Part No.: MF72-5-D20MSSB

NTC THERMISTOR

5Ohm

Rev.: 1/A (2012.06.29)

  

1. APPEARANCE

  

 

1-1. Dimensions (mm)

 

 

           

 

1-2. Marking

 NTC

5D-20

No marking  

  

 

1-3.Coating

 

  No coating     

      Coating

 

  

      

Material

      PF resin

      Silicon

     Epoxy

      Others

 

 

Color

 Green

 Red

 Tan

 Black

 Blue

  

1-4. Leads

Tin – plated copper wire

Tin-plated steel wire

Straight       Axis-formed

In-Forming  No Lead

 

  

DMax: 22.0

TMax: 7.0

F: 7.5/10±1.0

  

d: 0.8/1.0±0.5

LMin: 29

 

  

2. MECHANICAL CHARACTERISTICS

  

Item

Specification

Test Conditions & Methods

  

2-1. Solder-ability

The terminals shall be uniformly tinned, and its area≥95%

 

Dipping theNTC terminals to a depth of 15mm in a soldering bath of 245±5 and to the place of 6mm far from NTC body for 3±0.5s (See IEC68-2-20 /GB2423.28 Ta )

  

 2-2. Resistance To Soldering Heat

 

No visible mechanical damage.

ΔR/RN ≤20%

(ΔR =RN-RN')

 

Dipping the NTC terminals to a depth of 15mm in a soldering bath of 260±5 and to the place for 6mm below from NTC body for 3±0.5s.After recovering4-5h under 25±2. The rated zero power resistance value

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Mr. James
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Dongguan Uchi Electronics Co.,Ltd.
Samsung Industrial Park,Yucai Road, Dongguan, Guangdong, China (Mainland)
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