SF3-DC12V

Turn On Voltage (Max):	9.6 VDC
Coil Resistance:	288 Ohms
Coil Power:	500 mW
Contact Material:	Silver Tin Oxide (AgSnO), Gold (Au)
Operating Temperature:	-40°C ~ 70°C
Termination Style:	PC Pin
Mounting Type:	Through Hole
Features:	--
Release Time:	15ms
Operate Time:	30ms
Turn Off Voltage (Min):	1.2 VDC
Series:	SF3
Switching Voltage:	250VAC, 30VDC - Max
Contact Rating (Current):	6A
Contact Form:	4PST-3NO/1NC (3 From A, 1 Form B)
Coil Voltage:	12VDC
Coil Current:	41.7mA
Coil Type:	Non Latching
Relay Type:	Safety
Part Status:	Active
Packaging:	Bulk

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• SF3-DC12V

Power Relays, Over 2 Amps

Power relays are devices that allow the control of electrical circuits with a low power signal, and are typically used in high power applications where large amounts of power must be switched on and off. SF3-DC12V relays are a particular type of power relay that are rated for over 2 amps and are specifically designed for a wide range of applications.

Applications of SF3-DC12V Relays

SF3-DC12V relays are used in a variety of applications, including automotive, home appliances, industrial equipment, and security systems. In automotive applications, they are often used to control alternators, fuel pumps, and other high-power accessories. In home appliances, they are often used to control air conditioners, refrigerators, and other heavy-duty appliances. They are also commonly used in industrial equipment, such as welding machines, heaters, and press brakes.

Working Principle of SF3-DC12V Relays

SF3-DC12V relays typically use an electromagnetic coil to create the magnetic field needed to energize the contacts. When the current is passed through the coil, it creates a magnetic field that pulls in the armature, which then activates the switch contacts. The switch contacts are designed to be either normally closed or normally open, depending on the application. When the power to the coil is removed, the armature falls back into the de-energized position.SF3-DC12V relays can also use a small, low-power signal from a controller or switch to activate the magnetic coil. This is often referred to as “signal switching.” When the controller or switch sends a low-power signal, the magnetic field created by the coil pulls in the armature and activates the switch contacts. When the signal from the controller or switch is removed, the armature will fall back into the de-energized position and the switch contacts will return to their original position.

Advantages of SF3-DC12V Relays

SF3-DC12V relays offer a number of advantages over other types of relays. They are typically rated for more than 2 amps, making them well-suited for high-power applications. They are also much smaller than other types of relays, making them easier to install in tight spaces. Additionally, because of their low power requirements, they are often less expensive than other types of relays.

Disadvantages of SF3-DC12V Relays

SF3-DC12V relays also have a few drawbacks. Because they are so small, they are more prone to failure due to vibration and shock. Additionally, they can only be used in applications where the voltage does not exceed their rated voltage. Finally, signal switching can be unreliable in some applications, since the low-power signal is easily affected by noise.

Conclusion

SF3-DC12V relays are a type of high-power, low-power relay that can be used in a variety of applications. They are rated for more than 2 amps, making them well-suited for high-power applications. They are also much smaller than other types of relays, making them easier to install in tight spaces. Additionally, they are often less expensive than other types of relays. However, they can be prone to failure due to vibration and shock, and their use is limited to applications with a voltage rating not exceeding their rated voltage. Signal switching can be unreliable in some applications, and the low-power signal is easily affected by noise.

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