OM3325E-R58

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Through Hole Resistors are an essential component in any electrical, electronic, or motor control circuit, providing a reliably consistent source of resistance and current measurement in practically any application. The OM3325E-R58, in particular, is a three-terminal, through-hole resistive device that has proved itself to be a highly effective and reliable solution in many applications. This application note will discuss both the range of potential applications and the basic elements and principles of operation of the OM3325E-R58.

The Omron OM3325E-R58 is a universal three-terminal resistor that blends together high accuracy and reliability in a single package that is designed to fit into through-hole applications. Its high reliability is largely due to its use of a planar (flat) resistor along with a sealed plastic case to protect it from environmental contaminants. This design effectively shields the sensitive components in the device from environmental factors that could cause significant variance in resistance values.

Apart from its enhanced level of reliability the OM3325E-R58 is also designed to a high degree of accuracy. This is largely due to the precision of its planar resistor elements which can comply with resistance values given within a 0.3% tolerance level. Additionally, the device is also factory tested to ensure that the values are within specifications. Along with this stability of resistance, the device is also designed to provide a low level of thermal stability and to have superior shock and vibration resistance. This means that, even under prolonged exposure to adverse environments, the OM3325E-R58 will continue to provide a consistently reliable resistance for its entire life.

For most applications, the main purpose of the OM3325E-R58 is to provide a stable, measurable resistance, and this is where it truly excels. This device is ideal for use in applications where precise resistance is needed, including low power electrical strip circuits and embedded control circuits. Additionally, its low thermal drift and shock resistance ensure it is well suited for use in transportation, medical, home appliance and industrial motor control circuits. In each of these applications, the OM3325E-R58 provides a reliable and consistent source of resistance which can then be measured and adjusted by the designer when necessary.

Although the OM3325E-R58 is designed for specific use in electrical and electronic circuits, it also has several mechanical elements which can affect its performance. There are two integral screws which control and adjust the resistance of the device, and these can be used to adjust the internal resistance of the device depending on the needs of the particular application. Additionally, the device is designed with an integrated EMI filter which helps to eliminate any noise which may be present from the application. The thermal compound between the resistor and the case further enhances the thermal stability of the device.

In summary, the Omron OM3325E-R58 is a three-terminal, through-hole resistive device which is designed to provide a versatile and reliable source of resistance that is suitable for virtually any application. Its planar resistor elements and enhanced shock and vibration resistance ensure it is suitable for use in high power electrical strip circuits and embedded motor control circuits, and the manual adjustment screws provide an important level of flexibility for the designer. With its superior level of precision and reliability, the OM3325E-R58 is one of the most successful and cost effective solutions for applications requiring reliable, low cost resistors.

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