JWD-172-5

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Reed relays are electrical switches that are driven by an electromagnetic field. They are usually made of a pair of ferromagnetic alloy blades, encased in a small glass tube filled with an inert gas such as argon. When current is sent through a coil wrapped around the glass tube, the blades are magnetized and brought together to close the switch, enabling the flow of current. The JWD-172-5 reed relay is commonly used in network communications devices, computer systems, and other applications requiring low power switching.

The JWD-172-5: Features and Functions

The JWD-172-5 reed relay is a two-pole, two-position, double throw reed relay. It is rated for a maximum contact load of 500mA, with a maximum switching power of 5W. The contact gap of the JWD-172-5 is 0.2mm, and the coil resistance is 200 ohms. It is available in 24V DC versions, offering a choice between a 6mm and a 12mm coil length. It is also available in 12V AC versions, with a choice between a 6mm and a 9mm coil length.

The JWD-172-5 reed relay features a tight contact gap with a low contact resistance, making it suitable for high-frequency applications. It has a high breakdown voltage of 400V and a low switching power of 5W. It is also built with a good pull-in and hold-in performance, making it suitable for controlling small signals.

The JWD-172-5: Applications and Working Principle

The JWD-172-5 relay is used in many applications due to its small size and low power consumption. It is commonly used in telecommunications systems, computers, security systems, and other applications requiring low power switching. It can also be used in automotive systems such as environmental control systems.

The working principle of the JWD-172-5 reed relay is based on the fact that the ferromagnetic alloy blades inside the relay switch can be magnetized when an electrical current is passed through a coil wrapped around the glass tube. When the blades are magnetized they move and close the switch, allowing the flow of current. When the current is removed, the blades are demagnetized and return to their original position, opening the switch again.

The JWD-172-5 also features a latching mechanism which allows it to be held in either the “on” or “off” position. This is achieved by applying a momentary pulse of current to the coil to either close or open the switch. The latching feature makes the JWD-172-5 suitable for applications that require the switch to be held in a particular state.

Conclusion

The JWD-172-5 reed relay is a reliable and convenient relay for a variety of applications. It can be used in telecommunications systems, computers, security systems, and other applications requiring low power switching. It features a tight contact gap, a low contact resistance, a high breakdown voltage, and a low switching power, making it suitable for high frequency applications. It also has a latching mechanism which allows it to be held in the “on” or “off” position, making it ideal for controlling small signals.

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