SMTST4 Chip Common Mode Inductor

SMTST4 Chip Common Mode Inductor, which is a common inductance element. This is a simple way of saying that ac signals are isolated, filtered or resonant with capacitors, resistors, etc. The role of tuning and frequency selection inductor: the LC tuning circuit can be composed of inductive coil and capacitor in parallel. Any current in the patch inductor in the circuit generates a magnetic field, the flux of which acts on the circuit. Our products are in line with eu standards and exported to China and other countries around the world. Our products meet EU standards and are exported to China and other countries all over the world.
Product Description

1. Product Introduction of SMTST4 Chip Common Mode Inductor


SMTST4 Chip Common Mode Inductor: The full name Surface Mounted Devices is essentially a two-way filter: on the one hand, to filter out common-mode electromagnetic interference on the signal line, on the other hand, to suppress itself from emitting electromagnetic interference, so as to avoid affecting the normal operation of other electronic devices in the same electromagnetic environment.


Our high-quality SMD common mode inductance solves low-mode noise signal suppression interference sources for customers, improves productivity and quality reliability in installation, and is favored by Chinese and European customers.


2. Product Parameter (Specification) of SMTST4 Chip Common Mode Inductor


1. Five-ring pattern and size (SHAPE AND SIZE) (unit mm)

Types of








Note: The inductance can be customized according to customer requirements

2. Five ring number representation

SMTST4    -   221     K

(1). Number (Type): SMTST4

(2). Nominal inductance (Inductance): "221" means 220uH (Example: "221"for 220uH) (221)

(3). Inductance tolerance (Tolerance): "M: ±20%, "K": ±10%, "J": ±5% (K)

All electrical characteristics are designed according to customer requirements


3. Product Feature And Application of SMTST4 Chip Common Mode Inductor


SMTST4 Chip Common Mode Inductor  Characteristics:

1. Flat bottom surface suitable for surface mount.

2.Excellent end face strength and good soldering property

3.It has high Q value and low impedance.

4.Low magnetic leakage, low direct resistance, high current resistance.

5.Tape packing is available for easy automatic assembly


SMTST4 Chip Common Mode Inductor 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 IC 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 SMTST4 Chip Common Mode Inductor


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 verticallyor horizontally mounted; Rated current :Base on temperature rise not to exceed at 40℃.





5. Product Qualification of SMTST4 Chip Common Mode Inductor


Insulation: AC 2000V 1 minute between line and line; Insulation Resistance: 100mΩ min when DC 500V between line and line.;The product has stable quality, high power, low temperature rise, small size and short height compared with plug-in in the following figure. The quality of SMD common Mode inductance  products can be guaranteed for more than 5 years, which is trustworthy.




6. Deliver, Shipping And Serving of SMTST4 Chip Common Mode Inductor


Our SMTST4 Chip Common Mode Inductor generally have a domestic delivery date of 10 working days; The foreign delivery period is 20 working days. Our products are packed in three-level packaging. The packaging is firm and reliable, which can effectively protect the products from falling.


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