Turn Off Voltage (Min):	2 VDC
Coil Resistance:	3.5 kOhms
Coil Power:	--
Contact Material:	--
Operating Temperature:	-20°C ~ 85°C
Termination Style:	PC Pin
Mounting Type:	Through Hole
Features:	Diode
Release Time:	0.1ms
Operate Time:	1ms
Series:	7000
Turn On Voltage (Max):	18 VDC
Switching Voltage:	200VAC, 200VDC - Max
Contact Rating (Current):	500mA
Contact Form:	SPST-NC (1 Form B)
Coil Voltage:	24VDC
Coil Current:	6.9mA
Coil Type:	Non Latching
Part Status:	Active
Packaging:	Tube

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Introduction

Reed relays have long been an essential part of applications in the electronics industry. They are largely used in signal switching and control systems, memory devices, relays, transducers and general types of switching circuits. As the use and application of these devices increase, so too does the need to understand their working principles and application fields. The 7121-24-1101 Reed Relay is one such device whose features and application fields make it an ideal choice for a broad range of applications.

Features and Specifications

The 7121-24-1101 Reed Relay is a UL94V-0 rated, two-pole, Reed contact, non-latching type with a 50 W power rating and a 500 kΩ insulation resistance. Its contact form is composed of double-stacked contact elements, each having two gold-plated, sharp-edged clapper contacts in series. The reed contacts are biased to close when energized and are opened after one current surge. The contact arrangements enable this device to have very low contact resistance and fast response time. Other features offered by the 7121-24-1101 Reed Relay are overload protection, overload capability, and high level of contact force. Other specifications of the 7121-24-1101 Reed Relay include a voltage rating of 24VAC, a current rating of 1A, an operating temperature range of -40°C to +105°C, and a maximum contact resistance of 100,000Ω. The device is also rated for 1 million operations and has a life expectancy of twenty years.

Applications

The 7121-24-1101 Reed Relay is ideally suited for use in a range of applications including consumer electronics, automotive switches, automotive relays, LED driver circuits, memory devices, and other signal switching and control operations. It can also be used in a wide variety of domestic and industrial applications such as home appliances, industrial process control systems, and medical devices. It is a highly reliable, safe, and cost-effective device that offers excellent performance and high levels of reliability.

Working Principle

The 7121-24-1101 Reed Relay operates by the movement of a magnetic field activating a single set of contacts. When a voltage is applied to the contacts, the magnetic field pulls the contact plunger together, causing the contacts to close. When the voltage is removed, the magnetic field fades and the contact plunger is released, causing the contacts to open. The reed contacts of the device are biased to contact when energized. The contacts are opened after a single current surge without power, and are then self-released. This enables the device to operate with a stable contact condition after multiple open and close cycles.

Conclusion

The 7121-24-1101 Reed Relay is a highly efficient and reliable device suitable for a wide range of applications. It is UL94V-0 rated, two-pole, and is capable of supporting high levels of current and voltage. It has a low contact resistance and fast response time, as well as overload and overload protection characteristics. This device is suitable for use in consumer electronics, automotive switches and relays, LED driver circuits, memory devices, and a range of other signal switching and control operations. It is an efficient, safe, and cost-effective device that delivers excellent levels of reliability and performance.

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