H81K21BYA

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Through Hole Resistors

Through hole resistors, also known as thru hole resistors, are simple components which are placed onto printed circuit boards (PCBs) as part of an electronic circuit. They are designed to limit the flow of electrical current by providing resistance, resulting in a Voltage drop across the resistor itself, reducing the amount of current that can pass through the circuit.

One type of thru hole resistors is H81K21BYA, which is designed to be used in harsh environments, offering superior resistance under extreme temperatures and vibration conditions. H81K21BYA uses a thermally-resistant mica-packed construction and has a power rating of 20 watts. Its operating temperature range is -55 to +125°C. It has excellent thermal shock and vibration characteristics and is extremely dimensionally stable.

Application Fields

H81K21BYA resistors are used in a wide range of applications, including automotive, industrial, medical, military, and aerospace systems. They are used in power conversion, inverters, and converters, and are suitable for audio equipment, power supplies, and more. This particular model of resistor can also be used as a surge protection component, providing reliable protection against sudden voltage surges.

Working Principle

H81K21BYA resistors are designed to have a fixed electrical resistance value, determined by the amount of material used to make the component. When a current passes through the resistor, a voltage drop will occur across the resistor. This Voltage drop causes the current to be limited, allowing the electronic circuit to function normally.

The resistance is measured in Ohms, which is the standard unit of resistance. The resistance is determined by the combination of materials used to construct the resistor. Some resistors are designed with adjustable resistance, such as potentiometers, which allow the user to change the resistance to suit the application. The resistance is calculated by multiplying the resistance value with the current that is flowing through the resistor.

H81K21BYA resistors are designed with superior thermal stability and vibration resistance, making them ideal for use in harsh environments. By providing consistent resistance, they help to ensure the circuit functions properly, with no voltage spikes or drops.

Conclusion

H81K21BYA resistors are an important part of any electronic circuit, offering reliable protection against voltage surges and limiting the flow of electrical current. They provide consistent resistance under harsh conditions, ensuring that the circuit functions properly. By combining superior thermal stability and vibration resistance, H81K21BYA are a great choice for applications that require reliable performance under extreme conditions.

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