D3421

Series:	FT2, AXICOM
Packaging:	Bulk
Part Status:	Active
Relay Type:	Telecom
Coil Type:	Non Latching
Coil Current:	66.7mA
Coil Voltage:	3VDC
Contact Form:	DPDT (2 Form C)
Contact Rating (Current):	2A
Switching Voltage:	250VAC, 220VDC - Max
Turn On Voltage (Max):	2.25 VDC
Turn Off Voltage (Min):	0.3 VDC
Operate Time:	5ms
Release Time:	5ms
Features:	--
Mounting Type:	Through Hole
Termination Style:	PC Pin
Operating Temperature:	-55°C ~ 85°C
Contact Material:	Palladium (Pd), Ruthenium (Ru), Gold (Au)
Coil Power:	200 mW
Coil Resistance:	45 Ohms

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D3421 Signal Relays are up to 2 Amps signal relays that offer reliable performance and durability. The device is used in a wide variety of applications, such as telecommunications, industrial, and medical equipment, as well as in consumer electronics. The D3421 signal relay consists of a single pole double throw (SPDT) Form C switch and is designed with a self-latching mechanism. This ensures that the device works consistently and is protected from voltage spikes and other electrical interference.The D3421 device is available in four different versions, each offering different features and functions. The types offering the highest switching voltage ratings of 28V are the PCB mount, the thru-hole, and the relays with wire leads. Whereas, the surface mount version offers the lowest rated voltage of 24V. The duration of the actual switching action is determined by the coil voltage and is available from 0.3 to 0.8 seconds and above when a higher coil power is supplied. The device itself has a long mechanical life of 10 million cycles, while the electrical life is equal to or greater than 100,000 cycles when operated at 28V. The working principle of the D3421 signal relay is relatively simple. When the input voltage is applied, a magnetic field is generated by a data coil that attracts a soft iron core within the relay. When the core is attracted, the contacts (or Form C switch) close and the signal is sent to the output contacts. When the voltage is cut off, the core is released and the contacts open. This is how the signal is sent from the input to the output.As far as applications are concerned, the D3421 signal relay is suitable for a wide range of purposes. This device is commonly used as a switch for microphone input feeds, amplifier controls, audio-visual sound systems, signal routing, and connection operations. It can also be used for automatic switching between signal sources, such as from radio to TV or from TV to telephone. The D3421 is also ideal for initiating alarms and other warning alerts, as well as operating various machine operating processes.In conclusion, the D3421 signal relay is a reliable and durable device that offers optimal performance in a wide range of applications. It is designed with a self-latching mechanism and its rated voltage is available from 24V to 28V. Its mechanical and electrical life ratings are 10 million and 100,000 cycles respectively. The working principle of the device is relatively simple, whereby an input voltage is applied to generate a magnetic field that attracts a soft iron core. When the core is attracted, the contacts (or Form C switch) close and the signal is sent to the output contacts. Thus, the D3421 signal relay provides optimal performance in a wide range of applications.

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