brands

attributes.Features

attributes.Coil_Voltage

attributes.Contact_Configuration

attributes.Mounting_Type

attributes.Switching_Current

attributes.Maximum_Switching_Current_AC

attributes.Number_of_Coils

attributes.Maximum_Switching_Current_DC

attributes.Maximum_Switching_Voltage_AC

attributes.Maximum_Switching_Voltage_DC

attributes.Maximum_Switching_Power_DC

attributes.Series

attributes.Length

attributes.Depth

attributes.Height

attributes.Dimensions

attributes.Terminal_Type

attributes.Application

attributes.Number_of_Poles

Omron PCB Mount Signal Relay, 12V dc Coil, 1A Switching Current, DPDT

Omron Surface Mount Signal Relay, 12V dc Coil, 1A Switching Current, DPDT


Signal relays are a type of electrically operated mechanical switch. They are operated by electrical impulses with the primary function to open and close a circuit. Relays can also be referred to as industrial switches. There are 2 main types of relay category available, latching and non–latching relays.

Relays are used within PCBs for switching purposes. Signal relays are designed for low currents and low voltages. They can be used for up to 2A switching. Power relays are another type of relay which is suitable for high currents and voltages.

### What is the difference between latching and non-latching relays?

Both types of relays in similar in design and function, however, a significant difference between them is that a latching relay will remain in the last position it when it was last powered, whereas a non-latching goes back to its normal position. This makes each more type of relay suitable for different applications.

### **How to choose a signal relay:**

When choosing a relay, it is important to consider a number of specifications to ensure it is fit for purpose, some factors include:

- **Coil voltage** - the required voltage to actuate the switching mechanism. If a voltage is too high this could damage the components, if it is too low then it will not actuate
- **Contact configuration** - This is the state the contacts are in without power. For example SPST, single pole single throw
- **Contact material** - the relay contacts are available in many materials that have certain properties. Common materials are gold, silver, tin oxide and nickel
- **Coil power** - the amount of power (watts) the coil operates at. This must match the power in the circuit for correct function
- **Coil resistance** - the amount of resistance (ohms) in the circuit that the coil creates


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Omron Signal Relays

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