Technical Overview of the RCEC2000 Thick Film Power RESISTORS High voltage resistance, low INDUCTORS, and water-cooling compatibility for greater design flexibility (Scheduled for release after Q3 2026 - Advance information)

1. Low INDUCTORS achieved through thick film technology

The RCEC2000 uses thick-film (Cermet) technology, which bakes conductive paste onto CERAMICS substrate, reducing parasitic INDUCTORS to less than 40nH. Unlike wirewound RESISTORS, it does not have a coil structure, effectively suppressing ringing (voltage oscillation) and overvoltage that tend to occur during SWITCHES. This ensures stable output waveforms even in high-speed SWITCHES circuits using IGBTS or SiC/GaN devices.

2. High voltage resistance and high insulation performance

The standard specification of the RCEC2000 supports a withstand voltage of 5kVDC, and an HV (High Voltage) type that supports 12kVRMS is also available for applications that require even higher withstand voltages, such as pulse POWER SUPPLIES creep distance (shortest distance that current flows along the surface of the insulator) and clearance (shortest distance in the air), which affect insulation performance, are also sufficiently secured, ensuring long-term insulation reliability even in INVERTERS and POWER SUPPLIES circuits where high potentials are applied.
Of particular note is its resistance to partial discharge (a phenomenon in which minute discharges occur inside insulators). RCEC2000 maintains a low corona discharge of 10pC or less even when 7kV is applied, suppressing deterioration of the insulating material. It can be used safely in industrial equipment and automotive applications that require stable operation over long periods of time.

3. Highly efficient heat dissipation through a direct heat path

The structure allows heat to be transferred linearly from the resistor to the alumina substrate, silicone seal, and then to the heat sink, allowing for efficient dissipation of over 97% of the generated heat to the heat sink. Because the heat flow is clear, thermal design simulations and heat sink selection are easy, leading to reduced design man-hours.
When combined with a water-cooled heat sink, thermal resistance can be further reduced, ensuring stable operation and a long lifespan in high-power-density applications such as EV INVERTERS and large-capacity POWER SUPPLIES.

4. High power density and wide resistance range

The RCEC2000 supports a maximum rated power of 2000W when mounted on a heat sink with a bottom temperature of 85°C. This achieves extremely high power density for a thick film RESISTORS. Furthermore, a wide range of resistance values is available, from 0.47Ω to 1.5MΩ, enabling it to flexibly meet a variety of needs, including snubber, damping, and discharge applications.
The temperature coefficient, which indicates the change in resistance value due to temperature changes, is stable at 100 to 200 ppm/℃, allowing high accuracy to be maintained even in environments with large temperature fluctuations.

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Compared to competing products, the RCEC2000 offers the following outstanding features: