UU9.8 Common Mode Inductance

UU9.8 Common Mode Inductance, also called common mode choke, it is often used to filter common mode electromagnetic interference signals in computer switching power supply.
Product Description

1. Product Introduction of UU9.8 Common Mode Inductance


UU9.8 Common Mode Inductance filter circuit. La and Lb are Common Mode Inductance coils. The two coils are wound on the same core in the same number of turns and in the same phase (wound in reverse). In this way, when the normal current in the circuit flows through the common mode inductor, the current in the same phase winding inductor coil generates reverse magnetic field and cancel each other, the normal signal current is mainly affected by the coil resistance (and a small amount of damping caused by leakage inductance);


When the common mode current flows through the coil, due to the homogeneity of the common mode current, the magnetic field in the same direction will be generated in the coil and the inductive reactance of the coil will be increased.  As a result, the coil will show high impedance and produce strong damping effect, so as to attenuate the common mode current and achieve the purpose of filtering.


Our high-quality UU common mode choke solves low differential mode noise signal suppression interference sources for customers, and is deeply loved by customers in China, Europe and America.


2. Product Parameter (Specification) of UU9.8 Common Mode Inductance


 UU9.8-16 UU common chess inductance
 1. Five-ring pattern and size (SHAPE AND SIZE) (unit mm)




 Five ring number A B C D E G H
UU9.8 15.6 4.0±1.0 7.5±0.5 10.6 0.6±0.5 7.0±0.5 16.0
UU9.8-O 15.6 4.0±1.0 7.5±0.5 14.8 0.6±0.5 7.0±0.5 12.5
UU10.5 17.3 4.0±1.0 13.0±0.5 16.0 0.7±0.5 10.0±0.5 21.0
UU10.5-0 19.0 4.0±1.0 13.0±0.5 17.6 0.7±0.5 10.0±0.5 16.0 
UU16 22.0 4.0±1.0 14.0±0.5 17.5 0.7±0.5 10.0±0.5 23.0 
UU16-O 22.6 4.0±1.0 12.8±0.5 23.5 0.7±0.5 10.0±0.5 18.5
2. Five ring number representation
UU10.5 -  12MH min-O
(1). Number (Type): UU10.5 inductance (Ferrite beads) (UU10.5)
(2). Inductance marked 12MH min
(3) O stands for horizontal, no O means vertical

UU9.8 Common Mode Inductance Technical parameters:

PART NO Inductance DC Rated Rated Temperature TEST
Five-ring product name min(m H) Resistance Current Voltage Rise Max Voltage
UU9.8-0.5mH min-1A 0.5 0.3 1.00  250V 40.0  2000 
UU9.8-2mH min-0.5A 2.0  1.0 0.50  250V 40.0  2000 
UU9.8-5mH min-0.2A 5.0  4.5 0.20  250V 40.0  2000 
UU9.8-5mH min-0.3A 5.0  3.5 0.30  250V 40.0  2000 
UU9.8-8mH min-0.2A 8.0  6.0 0.20  250V 40.0  2000 
UU9.8-10mH min-0.1A 10.0  8.0 0.10  250V 40.0  2000 
UU9.8-20mH min-0.14A 20.0  16.5 0.14  250V 40.0  2000 
UU9.8-30mH min-0.25A 30.0  30.0 0.25  250V 40.0  2000 
UU9.8-45mH min-0.33A 45.0  38.5 0.33  250V 40.0  2000 


3. Product Feature And Application of UU9.8 Common Mode Inductance


UU9.8 Common Mode Inductance is line filters suppressing conductive noise ranging from low to high frequencies generated at power supply circuits of various electronic equipment; Application: Suppresses noise in DC circuits for switching regulators; Protects primary AC side form affected by a switching regulator; Filters noise emitting form Ultrasonic equipment; Filters electrostatic noise form Power and signal lines; Eliminates contact noise; Filters incoming spike noise for ICs and equipment using microcomputers; Minimizes noise emissions for conforming to FCC, VCCI, FTZ, CISPR, JTTC and VDE; Applied Equipment: TV, VCR, Switching Power sources, NC machines, Computer systems, peripheral units and Measuring instruments.


4. Product Details of UU9.8 Common Mode Inductance


UU9.8 Common Mode Inductance Characteristics: Inductance range: Up to 30MH; Current up to 15 Amps; Many style available; High levels of safety and reliability; Easy PC Board Mounting; Available as vertically or horizontally mounted; Rated current: Base on temperature rise not to exceed at 40℃.



5. Product Qualification of UU9.8 Common Mode Inductance


The UU9.8 Common Mode Inductance has stable quality, high power, low temperature rise and excellent quality. The quality assurance of UU common mode choke in the circuit is more than 5 years, which is trustworthy.
Insulation: AC 2000V 1 minute between line and line; Insulation Resisrance: 100mΩ min when DC 500V between line and line.




6. Deliver, Shipping And Serving of UU9.8 Common Mode Inductance


Our UU Common mode Choke generally have a domestic delivery date of 10 working days; The foreign delivery time is 20 working days. Our packaging adopts three-level packaging, which is firm and reliable, and can effectively protect the products from damage.


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