In today’s rapidly advancing industrial, energy, and transportation sectors, power electronic systems face unprecedented challenges. From power converters in wind turbines to motor drives in electric vehicles, from transient protection for grid transformers to precise discharge control in medical equipment, the demands on resistive components go far beyond simple Ohm’s Law. They must remain stable, reliable, and non-inductive under extreme conditions of high voltage, high current, and high-energy pulses . Conventional film or wire-wound resistor technologies often fall short in these “high-stress applications.” As an innovator in this field, the EAK brand leverages its core Bulk Ceramic Resistor technology to provide a comprehensive range of high-performance solutions, including liquid-cooled resistors, braking resistor boards, surge resistors, and capacitor discharge resistors , for customers worldwide.
Core Technology: Robust Bulk Ceramic
EAK’s competitive edge stems from its proprietary bulk ceramic material technology. This technology does not involve coating a resistive paste onto a substrate; instead, it uniformly embeds conductive particles within an inert ceramic matrix, which is then sintered into a solid unit at high temperatures. This unique structure grants EAK resistors unparalleled advantages:
- Exceptional Overload Capacity and Energy Absorption : Capable of instantly withstanding peak energies many times their rated power, making them ideal for handling switching transients, lightning surges, and other sudden events.
- True Non-Inductivity : The low inductance characteristic ensures no destructive back EMF is generated in high-frequency switching circuits, guaranteeing system stability.
- Excellent Heat Dissipation and High Power Density : The robust ceramic body itself acts as an excellent thermal conductor. Combined with flexible geometric designs, heat can be efficiently transferred away.
It is this core technology that provides the foundation for EAK to develop a series of high-performance products.
Bulk Ceramic Resistors
Comprehensive Product Portfolio for Diverse Industrial Needs
Built upon the powerful bulk ceramic technology platform, EAK has established a complete product line, precisely serving various demanding application scenarios.
Liquid-Cooled Resistors : When application environments require extremely high continuous power dissipation (such as large ship propulsion or dynamic braking in heavy machinery), air cooling is insufficient. EAK’s liquid-cooled resistors integrate the bulk ceramic core with highly efficient liquid cooling channels, achieving ultra-high power handling in a compact volume and effectively solving the heat dissipation bottleneck in high-power applications.
Liquid-Cooled ResistorsBraking Resistor Boards : In motor drive systems, when a motor is in generating mode (such as an electric vehicle going downhill or an elevator stopping quickly), regenerative energy is produced. EAK’s braking resistor boards can rapidly and safely convert this energy into heat, preventing overvoltage on the DC bus that could damage the inverter. Our modular design allows for parallel or series assembly based on power requirements, offering great flexibility.
Surge Resistors and R-C Snubber Circuits : During high-voltage switching operations (like opening/closing vacuum circuit breakers) or lightning strikes, damaging high-voltage transients can occur in the grid. These surges severely threaten the insulation life of expensive equipment like transformers and generators. EAK’s surge resistors , particularly tubular resistors used in R-C snubber circuits, can effectively absorb and suppress these transient energies, reducing dangerous voltage spikes by more than 50%. They are the “guardians” ensuring the safe operation of power systems.
Capacitor Discharge Resistors : In X-ray machines, laser equipment, and power supplies, energy storage capacitors retain high voltage after shutdown, posing safety hazards. EAK’s capacitor discharge resistors can safely and reliably dissipate the residual charge within capacitors within a specified time, ensuring the safety of maintenance personnel. They are indispensable safety components in medical and industrial equipment.
Discharge Resistor
EAK: Your Expert in High-Reliability Resistor Solutions
EAK is more than just a resistor manufacturer; we are your trusted engineering partner. We understand that every application scenario is unique, so we offer full-process services from conceptual design and customized production to testing and validation. Whether it’s standard products or highly customized special shapes and packages, EAK can provide the optimal solution for you through our advanced technology and extensive experience.
With the global energy transition and industrial automation wave, the demand for high-reliability electronic components will continue to grow. Choosing EAK means leveraging innovative bulk ceramic resistor technology to provide unbreakable protection for your critical systems.
