In the realm of high - power electronics, EAK's series thick - film resistors emerge as a paragon of excellence. Comprising models such as HPR2000, HPR1400, and HPR1000LC, this series is meticulously engineered to meet the most exacting demands across diverse applications.
These thick - film resistors are fully compliant with RoHS standards, underscoring EAK's dedication to environmental responsibility. Take the HPR2000, for instance. It exhibits remarkable power - handling capabilities, with the ability to operate at 2kW continuously. Even in pulsed - mode operations like 3kW with a 100ms/100ms or 10s/20s duty cycle, it functions with stability. This makes it an ideal choice for applications in high - power industrial equipment, where substantial energy dissipation is required, such as large - scale power supplies for manufacturing plants.
The HPR1400 resistor also shines with its unique features. It can operate continuously at 1.4kW or handle pulsed - power of 2kW in scenarios like 10s/10s or 50ms/50ms. When working in a 2 - minute on/off cycle at 1.4kW or 1kW, it demonstrates great adaptability. This characteristic is highly valuable in variable - load industrial machinery, where power requirements fluctuate during operation.
The HPR1000LC, with its capacity to handle 1000W continuously and 1500W in a 100ms/100ms pulsed - mode, is well - suited for applications that demand intermittent high - power output. Examples include certain types of welding equipment and short - burst power - intensive tools used in specialized manufacturing processes.
All models in the UPR series are equipped with a derating curve. This curve indicates that as the bottom case temperature rises, the rated power of the resistor must be adjusted accordingly. For example, when the bottom case temperature reaches 80°C, the power rating is reduced to a specific percentage of its nominal value. This derating mechanism is crucial for ensuring the long - term reliability and stability of the resistors, protecting them from potential damage due to overheating.
Physically, these resistors have a height of 22mm. They are securely attached to the radiator using M4x20 screws with a torque of 1.6 Nm, and the electrical terminals are fastened with a torque of 1.5 Nm. A thermal grease with a conductivity of 9.5W/mK (AAB TG4) is applied between the resistor and the heatsink, facilitating efficient heat dissipation. This design ensures that the resistors can maintain an optimal operating temperature even under high - power conditions, enhancing their overall performance and lifespan.
In conclusion, EAK's series thick - film resistors offer a winning combination of high - power handling capabilities, RoHS compliance, and efficient heat - dissipation features. Whether you are in the industrial, automotive, or electronics manufacturing sector, these resistors are a reliable choice for your high - power applications.
https://www.eak.sg/eaks-superior-thick-film-resistor-technology-for-high-power-applications/
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