A common mode choke is an essential component for reducing electrical noise in AC and DC circuits. These devices suppress unwanted signals that appear equally on two conductors, allowing normal operational currents to pass without interruption. Common mode chokes are used in applications ranging from industrial machinery and power supplies to telecommunications and consumer electronics.
At Magnetic Circuit Elements, Inc., we provide high-quality common mode chokes engineered for consistent performance, reliability, and durability. Our chokes are carefully constructed to handle a wide range of electrical conditions while maintaining effective noise suppression. Choosing the right common mode choke begins with understanding the core type, winding configuration, and packaging method, which all contribute to the device’s performance and suitability for specific applications.
Understanding Common Mode Choke Design
A strong common mode choke design begins with the magnetic core. We use high-permeability ungapped ferrite cores to ensure efficient suppression of common mode currents while allowing normal currents to pass freely. Our windings are configured to maximize attenuation of unwanted signals without adding unnecessary resistance or heat.
The design approach at MCE focuses on performance, reliability, and ease of integration. Each series of chokes is crafted with attention to how the device will operate under real-world conditions. Proper winding, precise core selection, and quality manufacturing contribute to long-term stability and predictable results. Customers benefit from products that maintain performance even in challenging electrical environments.
Application Features
The JL, ML, and ZL Series of chokes are offered for use in AC or DC power lines to attenuate common mode noise. The magnetic circuit is designed and windings are connected in the power line so that the currents will cancel. However, the common mode noise will be attenuated. A High-permeability ungapped ferrite core is used.
Packaging Considerations
The JL series are encapsulated in a cup which results in high density packaging and low profile. The ML series uses a printed circuit bobbin which provides a reliable and inexpensive termination. Two-section bobbins are used which automatically isolates the two windings. This provides a high dielectric withstanding voltage values. All the pins are left on the bobbin which results in maximum holding strength to the board.
Performance Comparisons
To summarize, the EMJL and OEZL series have the highest performance and best packaging density while the OGML series has the lowest price. This is especially true when compared to the sector wound toroids.
Applications & Use Cases
MCE common mode chokes are widely used to suppress electrical noise in power supplies and industrial equipment. They are effective in reducing interference in sensitive electronics and ensuring compliance with EMI standards. Our chokes are available in multiple sizes and configurations, making it easy to integrate them into existing designs or new projects.
Customers can select the series that fits their priorities: EMJL and OEZL for higher performance and compact packaging, or OGML for cost-effective solutions. Each product is ready for immediate installation and designed for long-term reliability.
Stop Noise Before It Stops You
Say goodbye to electrical interference with MCE’s reliable common mode chokes. Whether you need high-performance EMJL or cost-effective OGML series, we have the right solution ready for your project. Don’t let noise compromise your circuits, get the choke that keeps your systems running clean and steady. Contact MCE today and see how simple it is to protect your power lines and electronics. Fast, reliable, and engineered to perform. Your circuits deserve nothing less.
Spec Sheet List:
To view a spec sheet, click on the appropriate link below. A page will open in a new window and where you can zoom, print or save the document. After you are finished using the file, simply close the newly opened tab/window.
 | EMJL rev-D Spec-Sheet | 97.2 KB |
| O-1977L17 Spec-Sheet | 70.8 KB |
| O-1977L22 Spec-Sheet | 73.2 KB |
| O-1977L49 Spec-Sheet | 69.9 KB |
| O-1978L2 Spec-Sheet | 110.4 KB |
| O-2336L1 rev-A Spec-Sheet | 26.6 KB |
| OEZL Spec-Sheet | 109.3 KB |
| OGML rev-B Spec-Sheet | 84.8 KB |