Series:	HE3600
Packaging:	Tube
Part Status:	Active
Coil Type:	Non Latching
Coil Current:	12.0mA
Coil Voltage:	12VDC
Contact Form:	SPST-NO (1 Form A)
Contact Rating (Current):	500mA
Switching Voltage:	200VDC - Max
Turn On Voltage (Max):	8 VDC
Turn Off Voltage (Min):	1 VDC
Operate Time:	1ms
Release Time:	1ms
Features:	EMI Shielded
Mounting Type:	Through Hole
Termination Style:	PC Pin
Operating Temperature:	-40°C ~ 85°C
Contact Material:	--
Coil Power:	--
Coil Resistance:	1 kOhms

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Introduction

Reed relays are contact-based devices that are widely used in a variety of electronic and mechanical systems. They use an electromagnet to actuate a bridged contact making it a versatile and easy to use switch. Although reed relays have existed since 1889, they continue to be a popular choice in smaller and more sophisticated switching applications. In particular, the HE3621A1240 reed relay is a cost effective, reliable and useful reed relay option.

HE3621A1240 Application Fields and Working Principle

The HE3621A1240 reed relay can be used for a variety of applications that require a reliable contact closure. Its 5 volt DC coil power supply requirement makes it ideal for a range of DC-voltage devices. It can also be used as an interface for the connection of two different circuits with different voltages. The contact rating for this reed relay is one hundred twenty five (125)volts AC and two hundred fifty (250) volts DC. The contact resistance is rated at one hundred fifty (150)mΩ and it has an operative temperature range of zero (0) to seventy (70) degrees Celsius.

Working Principle

The working principle for the HE3621A1240 reed relay is quite simple. It uses an electromagnet to actuate a bridged contact. When DC power is applied to the relay, the magnet induces a magnetic field that attracts the bridging contact together. This creates a switch in the circuit that can be used to open or close the circuit, thus controlling the flow of electricity. When the power is removed, the contacts release and go back to their original positions.

Advantages

The HE3621A1240 reed relay has several advantages that make it a popular choice for smaller applications. First, its small size makes it a great choice for applications where space is limited. It is also relatively inexpensive compared to other reed relays on the market. Additionally, because of its DC coil activation requirement, it is much more reliable than other types of contact switches. The minimal heat generated by the coils makes the relay less prone to certain types of damage. The long contact life for the HE3621A1240, three thousand (3,000) cycles, further demonstrates its reliability and efficiency.

Applications

The HE3621A1240 reed relay can be used for many types of applications. These include switching in low power DC applications, signal transmission, switching small AC devices, and switching between multiple DC voltages. It is also popular in contacts counting, intermittent duty controls, and low voltage interface for instrumentation. The HE3621A1240 also has a number of industrial applications, such as wind turbines, HVAC systems, and medical devices.

Conclusion

The HE3621A1240 reed relay is a reliable, cost effective and versatile device that can be used for a wide variety of applications. Its small size, minimal heat generation, and low voltage requirement make it an ideal choice for small and sophisticated electronic and mechanical systems. Additionally, its long contact life and DC coil activation further demonstrate its reliability and efficiency.

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