AHA500FB-154R

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Chassis Mount Resistors are mainly used to provide a precise resistance over a wide range of frequencies and operating environments. They are most commonly used to dampen voltage and current spikes in a variety of industrial, medical, automotive, military and aerospace applications. The AHA500FB-154R is one type of chassis mount resistor with a wide range of applications and a working principle that will be described in more detail below.

Application Field

The AHA500FB-154R is an ultra-durable chassis mount resistor with an operating temperature range from -40°C to +155°C. It offers electrical insulation up to 500 VAC and a high pulse-load resistance rating of 175 watts. It is designed to provide overload protection from current, voltage, and temperature transients in industrial applications such as DC/AC inverters, programmable logic controllers (PLCs), AC/DC motor drives, and continuous duty applications. The AHA500FB-154R is also suitable for medical, automotive, defense, aerospace, and IoT applications due to its high resistance performance and environmental durability.

Working Principle

The AHA500FB-154R is composed of three layers: the resistor body, the ceramic end cap, and the housing. The resistor body consists of a coil of resistive material, such as nickel chromium, aluminum oxide, or silicon, which creates a precise resistance value. The ceramic end cap functions as an electrical insulator to prevent electrical current from leaking outside the resistor body. The housing, made of a rugged composite material, provides mechanical protection from the environment. When electrical current passes through the resistor body, a small amount of heat is created, which is dissipated by the housing into the environment.

The AHA500FB-154R is also designed with a high current rating of 100mA and a wide frequency range up to 1GHz. The wide frequency range allows the resistor to handle transient pulses from a variety of sources, such as spikes from motors and relays. The high current rating can handle larger loads without the concern of damaging the resistor. Additionally, the resistor has a high surge voltage rating of 800 VAC, which can provide protection from current surges.

The AHA500FB-154R is designed for long-term reliability in harsh environments. Its superior thermal dissipation rating ensures consistent performance over time. The resistor also has a wide operating temperature range, which allows it to maintain its performance in applications with widely changing temperatures. The resistor also has a 50-year projected lifetime, which allows it to outlast other components in the system.

In conclusion, the AHA500FB-154R is a versatile and reliable chassis mount resistor for a variety of applications. Its durability, operating temperature range, and high resistance performance make it an ideal choice for industrial, medical, automotive, and aerospace applications. The high current rating, wide frequency range, and high surge voltage rating provide long-term protection from voltage and current transients, making it well suited for continuous duty applications.

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