
80A Max ICI Inrush Current Limiter MF73 NTC Thermistor 40mm 45mm 50mm For UPS Power Supply
Advantage of apply MF73 NTC THERMISTOR
Best choice for limiting inrush current
Leading Technology Perfect Function Originate in domestic
Max steady state current : 120A
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 Guangdong Uchi Technology 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
Reliable configuration and convenient installation
Strongest capability of surge current protection and energy
absorption
Max. Steady state operating current
Long life and high reliability
Recommended Application
All kinds of power supply,UPS power supply,switching power supply
EV charger,charging pile
Motor dirver,superpower server motor driver,logic controller
High power plasma electric welder,cutting machine,super power lighting lamp
Nuclear magnetic resonance equipment,super power audio power amplifier,high power circle transformer
The solar panel arrays with high capacity power inverter
Then industrial robot drived by high voltage power supply,intelligent electric cabinet with lower voltage
Outline Dimension
Curved
Body size | Φ40 | Φ45 | Φ50 |
(Dmax)/Diameter | 45 | 50 | 55 |
(Tmax)/Thickness | 18 | 18 | 18 |
(F±1.5)/Pitch | 22.5 | 22.5 | 22.5 |
(L±2)/Lead length | 20 | 20 | 20 |
(W±0.2)/Lead width | 8 | 8 | 8 |
Lead thickness(H±0.1) | 1.0 | 1.0 | 1.0 |
Straight
Body size | Φ40 | Φ45 | Φ50 |
(Dmax)/Diameter | 45 | 50 | 55 |
(Tmax)/Thickness | 18 | 18 | 18 |
(F±1.5)/Pitch | 22.5 | 22.5 | 22.5 |
(L±2)/Lead length | 30 | 30 | 30 |
(W±0.2)/Lead width | 10 | 10 | 10 |
Lead thickness(H±0.1) | 1.0 | 1.0 | 1.0 |
Width of lower lead (W1±0.2) | 6 | 6 | 6 |
Technical Specification
Body diameter Φ40mm
P/N | R25±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) | Thermal time constant (mW/C) | Thermal time constant (s) | Max impulse capacitance (uF)240VAC |
MF73-0.2/50 | 0.2 | 2600 | 50 | 0.007 | 25 | ≥55 | ≤350 | 8000 |
MF73-0.5/40 | 0.5 | 2600 | 40 | 0.008 | 6800 | |||
MF73-3/28 | 3 | 2800 | 28 | 0.02 | 6800 | |||
MF73-5/25 | 5 | 3000 | 25 | 0.028 | 4700 | |||
MF73-8/20 | 8 | 3200 | 20 | 0.034 | 3300 | |||
MF73-10/19 | 10 | 3200 | 19 | 0.038 | 3300 |
Body diameter Φ45mm
P/N | R25±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) | Thermal time constant (mW/C) | Thermal time constant (s) | Max impulse capacitance (uF)240VAC |
MF73-0.2/65 | 0.2 | 2600 | 65 | 0.006 | 30 | ≥70 | ≤480 | 11500 |
MF73-0.5/50 | 0.5 | 2600 | 50 | 0.007 | 8000 | |||
MF73-2/40 | 2 | 2600 | 40 | 0.012 | 8000 | |||
MF73-5/30 | 5 | 3000 | 30 | 0.025 | 6800 | |||
MF73-10/24 | 10 | 3200 | 24 | 0.032 | 4700 |
Body diameter Φ50mm
P/N | R25±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) | Thermal time constant (mW/C) | Thermal time constant (s) | Max impulse capacitance (uF)240VAC |
MF73-0.2/80 | 0.2 | 2600 | 80 | 0.004 | 36 | ≥90 | ≤650 | 15000 |
MF73-0.5/60 | 0.5 | 2600 | 60 | 0.006 | 11500 | |||
MF73-1/56 | 1 | 2600 | 56 | 0.008 | 11500 | |||
MF73-3/40 | 3 | 2800 | 40 | 0.015 | 11500 | |||
MF73-5/35 | 5 | 3000 | 35 | 0.022 | 8000 | |||
MF73-6.8/32 | 6.8 | 3000 | 32 | 0.025 | 8000 | |||
MF73-10/27 | 10 | 3200 | 27 | 0.03 | 6800 |
Guangdong Uchi Electronics Co.,Ltd
Uchi was established in 2006 in Dongguan, China.
After years of development, Uchi has become a large scale hi-tech
enterprise that specialized in development and production of
complete series of MOV,PTC, NTC series, PPTC series, Fuse(ALL
TYPE),Resistor、integrated circuit 、 Capacitor, surge protector and
protective devices of lightning protection products. It ranks front
in the industry and has heartquarter in Hong Kong. With its
excellent technology and quality products, Uchi has won wide
recognition of overseas customers. Saini Impex PVT.LTD is our
authorized sole distributor in india .
China's leading enterprise of circuit protection components
Our strength :
A large number of product series in our factory have passed the
certification of various international standards
Factory Tour :
Advanced equipment, lean production
Uchi boasts with a production base that covers an area of nearly
15000 square meters.
We successively imported high-tech fully automated production
equipments and high precision testing instruments and have put into
production to realize the automation, large scale and
standardization.
Uchi has a galaxy of hi-tech talent teams headed up by national
class experts to engage in the work of product development, product
quality control, sales andservice technical support, etc., and has
successively obtained tens of certificates of appearance patents,
utility patents and inventions.
To guarantee the quality, we successfully passed the certification
of ISO9001:2008 quality management system, scientific and efficient
managing mode to carry out lean production and form scientific and
efficient quality control system. The products are certified with
UL, CUL, TUV, VDE, CSA and SGS, RACH 73 environmentally friendly
testing certifications.
Exquisite quality at customers' favor
Uchi is an export membership of Alibaba with free import and export rights. It is appraised as Guangdong Famous Star Enterprise and Dongguan Private Enterprise. Our products have doubled and redoubled to provide more kinds and high quality and reliable products and service. Our products mainly consist of:
Metal Oxide Varistor
DIP Varistor & SMD Varistor
Thermally Protected Varistor
DC-Link Capacitor for New energy vehicles supporting the HEVEV
Automotive Fuse Links for EV Plugin HEV FCEV
PTC Thermistor
NTC Thermistor
PPTC Resettable Fuse
Thermal Fuse
Auto Blade Fuse
Glass Fuses
Metal Film Resistor
Carbon Film Resistor
Cement Resistor
NTC Temperature Sensor
CDS Photoconductive Cell
Our products are widely used in New energy vehicles, home appliance, medical equipment, office equipment, communication
equipment, phone battery, electronic calendar, electronic
thermometer and temperature controller to cover military
telecommunications, IT, automobile and consumer electronic fields.
Cooperation with good faiths to win in the market.
Excellent quality sincere service is the key to the success of
Uchi.
In the future Uchi will still stick to the tenets of "Quality
first, customer foremost." "First class quality, first class
service and customersatisfaction" to manufacture the high quality,
technically advanced and reasonable prices products. We hope to
trigger with global partners the revolution in resistor products.
We cordially welcome friends from home and abroad to visit us for
guidance and cooperation.