Model No: 12V DC Series

12V DC EMI Filter

DOREXS' DC series 12V DC EMI filters reduce electromagnetic interference in DC power supplies and help you comply with emission standards. The series covers a current range from 3A to 50A and supports voltages from 12VDC-100VDC. This series of filters is small in size, easy to install, and has a variety of terminal connection options (terminal blocks, power cords, studs), suitable for many different applications, such as DC power input and various types of sensitive electronic equipment using DC power.

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12V DC EMI Filter Data Sheet

DOREXS' 12V DC EMI filter effectively suppresses electromagnetic interference in DC power systems. Ideal for automotive electronics, LED drivers, industrial controllers, and communications equipment, this compact and reliable filter helps ensure system stability and compliance with global EMI standards.

Catalogue

DOREXS Product Guide

Datesheet
DC D series	DC DP series

Features of 12V DC EMI filter

Designed for DC power supply
Excellent differential and common mode attenuation performance
Low insertion loss, high reliability
Compact structure design, small footprint
Operating voltage: 12VDC-100VDC; Rated current: [e.g.: 10A]
Multiple connection methods, easy to install
Compliant with RoHS standards and UL/CE certified
Customization supported

Advantage of DOREXS

EMI filter manufacturer
16 years of EMI industry experience
Professional design team and service team
Products have safety regulations certification
After-sales guarantee

Featured Series

DC D series EMI filter:
	12VDC-100VDC power line EMI filter
	With differential mode coil
	Bolt, power cord and plug connection
	Support customization

DC DP series EMI filter:
	12VDC-100VDC PIN EMI filter
	Designed for PCB
	Stable performance and strong anti-interference ability
	Suitable for module power supplies and small instruments

The DC series filters adopt standard terminal connection design, which can realize plug-and-play integration. They are compatible with most 12-100VDC DC power supplies and require very small installation space.

Application

12VDC EMI filter is specially designed for DC power supply, the main application areas include:

LED lighting system
Electric vehicle controller
Battery management system
DC/DC converter
Telecommunication equipment
DC switching power supply
Private branch exchange (PBX)
Data communication
Module power supply
Small instrument

Contact our team to learn more about 12V DC EMI filters

FAQ

1. What is the difference between DC EMI filters and AC EMI filters?

DC EMI filters:

Used to suppress electromagnetic interference in direct current (DC) power lines.
Typically handles stable unidirectional voltages (e.g. 12V, 24V, 48V DC).
Commonly used in battery-powered devices, solar systems, and DC-DC converters.
Typically lacks components such as Y capacitors (line to ground) to prevent ground current issues.

AC EMI filters:

Designed for alternating current (AC) systems (e.g. 120V, 230V, 50/60Hz).
Can handle voltage polarity changes and higher voltages/currents.
Includes common-mode and differential-mode filtering with X capacitors (line to line) and Y capacitors.
Suitable for home appliances, industrial equipment, and power supplies.

2. How to choose the right EMI filter for 12V power applications?

When selecting an EMI filter for a 12V DC application, consider the following:

Voltage rating: Make sure the filter supports at least 12V DC (preferably higher, such as 16V-24V).
Current rating: Match the maximum operating current of the system with a safety margin.
Insertion loss: Select a filter with adequate attenuation at the noise frequencies of interest.
Application type: For automotive, LED lighting, or communications equipment, select a filter designed for those environments.
Mounting and size: Consider space constraints (e.g., PCB mount vs. chassis mount).
Certification: Look for filters with UL, CE, or automotive grade (AEC-Q200) certifications, if needed.

3. Can this filter be customized for higher currents?

Yes, most EMI filters can be customized for higher current applications.

Customizations typically include:

Larger inductors and capacitors to handle higher currents without saturation or overheating.
Thicker wires or terminals to increase current carrying capacity.
Enhanced thermal design, such as heat sinks or enclosures.
Adjustment of component layout to improve performance or meet EMC compliance.
For customization, you need to specify:
Input voltage and current
Noise frequency range
Environmental conditions (temperature, humidity, vibration)
Mechanical constraints (size, mounting style)