EAK UPR Series Thick - Film Resistors: Precise Specifications for Diverse Applications

 

EAK's UPR series thick - film resistors are celebrated for their precise specifications and extensive range of applications. This series, which includes the HPR2000, HPR1400, and HPR1000LC models, is tailored to meet the diverse power and resistance needs of modern electronics.

Regarding resistance values, the UPR2000 provides a wide spectrum, ranging from 1Ω to 100kΩ, with a tolerance of K = ±10%. This wide - ranging resistance selection makes it highly adaptable to different circuit designs. In a high - voltage power supply circuit, a higher resistance value might be necessary to limit the current, while in a low - voltage, high - current circuit, a lower resistance value would be more appropriate. The UPR1400 comes standard with an internal temperature sensor, the PT1000. This sensor enables accurate monitoring of the resistor's internal temperature, a critical feature for applications where temperature control is of utmost importance, such as in precision medical equipment or high - end audio systems. The HPR1000LC is equipped with an internal temperature sensor AD and has a resistance tolerance of J = ± 5%, making it suitable for applications that require highly precise resistance values, like in measurement instruments and some advanced communication devices.

The power - handling capabilities of these resistors are also a significant advantage. The HPR2000 can handle up to 2kW continuously and 3kW in pulsed - mode operations. This makes it suitable for power - intensive applications such as large - scale industrial motors and high - frequency induction heating systems. The HPR1400, with its ability to operate at 1.4kW continuously or handle pulsed - power of 2kW, is well - suited for applications with moderate power requirements, such as lighting control systems and small - scale industrial machinery. The HPR1000LC, which can handle 1000W continuously and 1500W in pulsed - mode, is ideal for applications where intermittent high - power output is needed, like in certain battery - charging circuits and short - term power - boosting devices.

The UPR series also offers optional signal connectors for the 1400W and 2000W models. For example, the PT100 connector is useful for accurate temperature measurement, while the AD1400 and AD2000 connectors provide additional functionality such as voltage sensing and reset capabilities. This flexibility in connectivity allows for seamless integration into complex electronic systems.

In terms of installation, these resistors are designed for easy and secure mounting. They are screwed to the radiator with a torque of 1.6 Nm using M4x20 screws, and the electrical terminals are screwed with a torque of 1.5 Nm. A high - quality thermal grease (AAB TG4) with a conductivity of 9.5W/mK is used between the resistor and the heatsink to ensure efficient heat dissipation. This not only improves the resistor's performance but also extends its service life.

In summary, EAK's UPR series thick - film resistors are a versatile and reliable choice for a variety of applications. Their precise specifications, high - power handling capabilities, and flexible connectivity options make them a top choice for engineers and designers in the electronics industry. 
EAK's Superior Thick-Film Resistor Technology for High-Power Applications - EAK RESISTORS

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