HE3321C0400

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Reed relays are a type of electrical switch utilizing magnetically-responsive materials like glass to close a set of contact points suspended in a protective encapsulation. The HE3321C0400 is an example of a reed relay suitable for low voltage and low current switching.

Application Field

The HE3321C0400 is primarily designed for radio-frequency (RF) switching applications, particularly those requiring high isolation. As such, it is typically used in broadcast receivers, television transmitters and receivers, laboratory instruments, test and measurement equipment, remote controls for hobby and RC vehicles, and medical and instrumentation equipment.

The HE3321C0400 also finds itself in telecommunications and networking applications, such as multiplexers, modems, antenna and cable switching, and wireline and wireless switching.

Working Principle

The HE3321C0400 is an on/off reed relay, meaning that its contact points remain either open or closed, and cannot be adjusted. The two reeds, or contact points, provide an easy way to control an electrical circuit with a low current and low voltage electrical pulse for switching applications.

The internal mechanism of the HE3321C0400 consists of two ferromagnetic core reeds, or contact points, that can be either open or closed. When a magnetic field is applied to the reeds, they move, producing an off/on or open/closed switching action.

When the activating magnetic field is removed, the reed contacts spring back to their original position, and the circuit is switched off. The reed contacts of the HE3321C0400 are stated to be rated for approximately 50V and 24mA, making them suitable for most low voltage and low current applications.

Conclusion

The HE3321C0400 is a type of reed relay that is designed for low voltage and low current radio-frequency switching applications. The internal mechanism is composed of two ferromagnetic core reeds which are activated when a magnetic field is applied to them, producing either an \'on\' or \'off\' switching action. When the activating magnetic field is removed, the reeds spring back to their original position, and the circuit is switched off.

The HE3321C0400 is a potentially useful component for low voltage and low current applications. It can be used in a variety of fields ranging from broadcast receivers and antennas to remote controls and instrumentation equipment.

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