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Inrush Current Limiting Ntc Thermistor Mf72 Series-15d
Posted at: Offers to Sell and Export | Posted on: Wednesday 15 August 2012 12:29 pm | Poster last visit: Sunday 7 April 2013 |
Product Category: Main
» Electronic Components and Supplies
» Passive discrete components
» Resistors
» Thermistor
» Inrush Current Limiting Ntc Thermistor Mf72 Series-15d
Product Description:
Brief Introduction:
MF72 series NTC thermistor devices for limiting surge current are made of a specially
formulated metal oxide ceramic material and in the form of radial resin coated that is capable of limiting high surge current. Applying power NTC thermistor in the power supply loop is the most simple, convenient and effective measure to restrain switch-on surge current and protect electronic equipment.
Product Application:
1. Conversion power supply, switch power supply, UPS power
2. Power supply circuit, electronic circuit of equipments
3. Electric heater
4. Electronic ballast
5. Oscillight, display
6. Filament protection of bulb, electronic energy-saving lamps and other lighting lamps
Working principle:
When turn on an electrical equipment, a prodigious surge current arises in the moment can be restrained effectively by a power NTC thermistor connected in series with the power circuits, which including a capacity, heater, motor.This inrush current lasts short, but its peak current is prodigious. It can even exceed 100 times of operating current in conversion power, switch power and UPS power.So limiting the surge current measures must be took effectively.When current is applied on NTC thermistor directly, NTC resistance may decrease with the heating of NTC thermistor speedily. Power type NTC thermistor has a specified zero power resistance, when it is in series in the circuit, it can restrain the switch-on surge current effectively. After it completes surge current limiting function, due to the current operation continuously, the resistance can decrease to very small value, its power consumption can be neglected, does not influence the normal operation current. Therefore, applying power NTC thermistor in the power supply loop is a most effectively and most brief measure to restrain surge current, protecting electrical equipment from destruction.
Main parameter:
Zero Power Resistance Value R25（Ω）
Maximum stable current I（A）
Approximate resistance in maximum current（Ω）
Thermal time constant（S）
Dissipation factor （mW/ ℃）
Operating temperature range -55~+200 ℃
Selection Guide:
1. Maximum operating current > Actual operating current in the power loop
2. Rated zero power resistance at 25C
of which, E: loop voltage, Im: Surge current
For conversion power, reversion power, switch power, UPS power, Im=100 times operating current
For filament, heater, Im =30 times operating current
Advantages:
1.long service life, high reliability, wide operation range
2.small dimension, large power, strong in inrush current limiting
3.fast response to surge current
4.large material constant, low resistance residue
5.can limit inrush current effectively
6.minimum power loss in stationary state(Normally just 1W or less than 50W power)
7.high thermal and electrical reliability
8.wide selection of electrical characteristics
9.Wide operating temperature -55~+200 ℃
Comparison without and with NTC thermistor application
Many specifications for choice, and samples&orders can be custom made per customers' requirement.
Company Contact:
Contact Name: Mary Yeung
Company Name: Shenzhen DXM Technology Co., Ltd
Email:
Tel: 86-755-27522473
Fax: 86-755-27522896
Street Address: Block C, Sanhe
International Science And Technology
Zone, Dalang Street, Baoan District,
Shenzhen, Guangdong 518109 China
Website: http://www.dxmht.com
Member name: DXMresistor
Country: China
Member Since: 27 July 2012
Total Leads: 47 DXMresistor Import Export Business Leads
Business focus: Ptc Thermistor, Ntc Thermistor, Thermal Resistor, Pptc, Sensor, Ptc Heater, Temperature Sensor, Varistor, Capacitor, Sensitive Electronic Components
Chat:
Verify: Safe Import Export Tips
MF72 series NTC thermistor devices for limiting surge current are made of a specially
formulated metal oxide ceramic material and in the form of radial resin coated that is capable of limiting high surge current. Applying power NTC thermistor in the power supply loop is the most simple, convenient and effective measure to restrain switch-on surge current and protect electronic equipment.
Product Application:
1. Conversion power supply, switch power supply, UPS power
2. Power supply circuit, electronic circuit of equipments
3. Electric heater
4. Electronic ballast
5. Oscillight, display
6. Filament protection of bulb, electronic energy-saving lamps and other lighting lamps
Working principle:
When turn on an electrical equipment, a prodigious surge current arises in the moment can be restrained effectively by a power NTC thermistor connected in series with the power circuits, which including a capacity, heater, motor.This inrush current lasts short, but its peak current is prodigious. It can even exceed 100 times of operating current in conversion power, switch power and UPS power.So limiting the surge current measures must be took effectively.When current is applied on NTC thermistor directly, NTC resistance may decrease with the heating of NTC thermistor speedily. Power type NTC thermistor has a specified zero power resistance, when it is in series in the circuit, it can restrain the switch-on surge current effectively. After it completes surge current limiting function, due to the current operation continuously, the resistance can decrease to very small value, its power consumption can be neglected, does not influence the normal operation current. Therefore, applying power NTC thermistor in the power supply loop is a most effectively and most brief measure to restrain surge current, protecting electrical equipment from destruction.
Main parameter:
Zero Power Resistance Value R25（Ω）
Maximum stable current I（A）
Approximate resistance in maximum current（Ω）
Thermal time constant（S）
Dissipation factor （mW/ ℃）
Operating temperature range -55~+200 ℃
Selection Guide:
1. Maximum operating current > Actual operating current in the power loop
2. Rated zero power resistance at 25C
of which, E: loop voltage, Im: Surge current
For conversion power, reversion power, switch power, UPS power, Im=100 times operating current
For filament, heater, Im =30 times operating current
Advantages:
1.long service life, high reliability, wide operation range
2.small dimension, large power, strong in inrush current limiting
3.fast response to surge current
4.large material constant, low resistance residue
5.can limit inrush current effectively
6.minimum power loss in stationary state(Normally just 1W or less than 50W power)
7.high thermal and electrical reliability
8.wide selection of electrical characteristics
9.Wide operating temperature -55~+200 ℃
Comparison without and with NTC thermistor application
Many specifications for choice, and samples&orders can be custom made per customers' requirement.
Company Contact:
Contact Name: Mary Yeung
Company Name: Shenzhen DXM Technology Co., Ltd
Email:
Tel: 86-755-27522473
Fax: 86-755-27522896
Street Address: Block C, Sanhe
International Science And Technology
Zone, Dalang Street, Baoan District,
Shenzhen, Guangdong 518109 China
Website: http://www.dxmht.com
Member name: DXMresistor
Country:
ChinaMember Since: 27 July 2012
Total Leads: 47 DXMresistor Import Export Business Leads
Business focus: Ptc Thermistor, Ntc Thermistor, Thermal Resistor, Pptc, Sensor, Ptc Heater, Temperature Sensor, Varistor, Capacitor, Sensitive Electronic Components
Chat:
Verify: Safe Import Export Tips
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