Product Description
YHDC 25A Inductance 4.6mH Common Mode Choke Inductance Coil LB135-25-46W
Suppressing common mode interference signal.
Electrical parameter:
| Model |
LB135-25-46W |
| Rated current |
25A |
| Inductance |
4.6mH |
| Mounting type |
PCB |
| Fair resistance |
with UL94-V0 |
| Operation temperature |
-20ºC~+70ºC |
| Storage temperature |
-20ºC~+70ºC |
| Work frequency |
50Hz~60Hz |
| Dielectric strength |
2.5KV/1min(Coil) |
| Inductance test conditio |
100Hz,0.3V |
| Inductance erro |
-30% ~ +50% |
| Maximum operating voltage |
400V |
| Weigh |
160g |
Dimensions and Diagram:
LB Series common mode toroidal chokes provide an efficient means of filtering of filtering supply lines with in-phase signals of equal amplitude, enabling equipment to meet stringent electrical emission requirements.
Wide frequency ranges can be filtered by using high and low inductance common mode chokes in series. Differential mode signals can be significantly attenuated when used in conjunction with input and output capacitors.
Inductors are passive, two-terminal electrical components that store energy in a magnetic field when electric current flows through them. They generally consist of an insulated wire wound into a coil around a core. Common mode chokes act as passive electronic inductors that filter out frequencies. High frequencies are specifically eliminated, while low frequencies are allowed to pass through an electronic system. With such properties, they have proven to be very useful when used in electrical transformers.
Construction
Common mode chokes consist of a magnetic or ferromagnetic core and two wire windings in the form of toroidal inductors. The two windings are identical except that they are wound in opposite directions. The choke can be large or small, with no fixed number of windings, but the primary coil delivers current from the AC mains and the secondary winding. This creates a balance by cancelling the flux from the primary coil. When common mode current is used for different circuits, the choke blocks out the noise in the AC mains.
Finding the right choke
It is very important to find the right common mode choke, and to do this you need to be aware of the level of common mode noise suppression required. one technique for achieving maximum efficiency is to select the lowest frequency for common mode noise suppression. To resist the noise without affecting the signal, high impedance is applied at unwanted frequencies. Unwanted noise is cancelled when there is equal signal cancellation in the common mode choke.
The best chokes for filtering out unwanted electromagnetic interference currents without causing signal degradation work well with filtering out unwanted frequencies in power lines. Common mode chokes can also be used to generate radio frequency interference in networks that don't use unshielded twisted pair cable. The overall effect is a zero impedance created by short signals to ground potential.
Why the name?
You may wonder why chokes are called "common mode" chokes. The reason is that chokes are present on both the neutral and the line. Now that you have understood what a common mode choke is, how it is constructed and how it works, let us help you find the right choke for your application.
Main features:
Suppression of common-mode interference: high impedance for common-mode signals and low impedance for differential mode signals.
Small DC resistance: little impact on the transmission of DC signals or low-frequency signals.
Good high frequency characteristics: the impedance of high frequency signal is large, which can effectively inhibit high frequency common mode interference.
Small leakage inductance: Well-designed common mode chokes have small leakage inductance, reducing the impact on differential mode signals.
Voltage resistance: It has certain voltage resistance to prevent damage under working voltage.
Thermal stability: It may heat up during the working process and needs to have good thermal stability.
Common mode choke is an important part of electromagnetic compatibility design. Selecting and using common mode choke correctly can effectively improve the anti-interference ability and electromagnetic compatibility of electronic equipment.
Main Product
Company Profile
YHDC was established in 1992 and is a leading manufacturer of electromagnetic components and devices. Our products are widely used in industrial equipment, precision instruments and meters, aerospace, medical, railway, electric power, wind power and other high end industries that require high performance and reliability. The product range includes power transformers, current transformers, SCR trigger transformers, DC current sensors, residual/leakage current transformers and sensors, and Rogowski coils. YHDC's R&D team is constantly developing new high performance devices every year . The company is equipped with mold manufacturing and injection molding workshops . Over the years , we have designed and developed hundreds of products, including non standard products according to customer requirements. Focus on the design and manufacture of high-quality products, adapt to severe environments, long term reliable operation , and a service life of up to 20 years. YHDC has a number of patents, which are widely used in power, Internet of Things and other industries.
Our Advantages
We value our customers Timing Reply in 24 hours, showcasing our passion and patience. According customers' require- ment recommend the suitable product. We provide 1 year warranty, If you have any problems during use, our technical team will provide technical support.
Certifications
Exhibition
Packaging & Shipping
Package
· All our CT will be well packed with box in a carton.
· You can design your own label and package
· Can be netural packing or OEM. Shipping
· Products are shipped via DHL/ FedEx /UPS /TNT, etc. (door to door), or air & sea shipment for larger qty.
FAQ
Q: Do you provide samples? Can the product be customized?
A: Yes.
Q: How long is your delivery time?
A: 5-7 working days .
Q:Are you trading company or manufacturer?
A:We are factory.
Q:How can I place an order?
A: You can contact us by email about your order details, or place order online directly.
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