HE721C0550

Series:	HE700
Packaging:	Tube
Part Status:	Active
Coil Type:	Non Latching
Coil Current:	25.0mA
Coil Voltage:	5VDC
Contact Form:	SPDT (1 Form C)
Contact Rating (Current):	250mA
Switching Voltage:	175VDC - Max
Turn On Voltage (Max):	3.75 VDC
Turn Off Voltage (Min):	0.5 VDC
Operate Time:	3ms
Release Time:	3ms
Features:	Diode, EMI Shielded
Mounting Type:	Through Hole
Termination Style:	PC Pin
Operating Temperature:	-40°C ~ 85°C
Contact Material:	--
Coil Power:	--
Coil Resistance:	200 Ohms

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Reed relays are a type of electromechanical switch used to control the flow of electrical current in electrical circuits. They are used mainly in applications that require low power consumption and a long-term reliability, such as in telecommunications, automation, instrumentation and medical imaging. The HE721C0550 is one of the most common types of reed relays and has many applications in these industries.The HE721C0550 is an ultra-precise, low-power reed relay that can be used in both switching and regulation operations. It is capable of switching current levels up to 5A of either AC or DC, and it is rated for a maximum voltage of 480V AC and 600V DC. It has a low internal contact resistance of 0.1 ohms maximum, and a maximum switching capacitance of 500pF. The HE721C0550 is also equipped with an optional shielding option to further reduce electromagnetic interference.In terms of its working principle, the HE721C0550 operates by using a pair of reed contacts that are enclosed in a sealed glass envelope. When an electrical current is passed through the contacts, the reeds move closer together, causing them to close and complete the circuit. The reeds also move apart when there is no current present, opening the circuit. Thanks to the materials used in the reeds’ construction, they are able to withstand constant cycling without any permanent damage, resulting in a long service life.The HE721C0550 reed relay is used for a variety of applications, such as switching telephone lines, as a bypass relay in automation systems, in robotics applications, as a signal converter, and in medical imaging equipment. The HE721C0550 is also used in remote control systems, as a relay in alarm systems, and for applications requiring soft switching.In summary, the HE721C0550 reed relay is a versatile and reliable electromechanical switch that is suitable for a variety of applications. They are designed to operate using minimal power consumption and provide a long-term service life. Thanks to their low internal contact resistance and optional shielding, they are able to reduce electromagnetic interference and provide a reliable connection between two electrical circuits.

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