This Product Selection Guide contains information to help select products in the Signal Relays, Up to 2 Amps category on DigiKey.com
Signal Relays Up to 2 Amps are electromechanical devices that turn a large load on or off through the use of a smaller control signal.
SelectionCharacteristics
Mounting Type: Indicates how the device is attached.
Coil Voltage: The nominal current flow through a relay’s control coil when the indicated coil voltage is applied.
Contact Form: Describes the contact closures provided by a relay or relay-output device, in terms of the number of independent circuits that are actuated in parallel, the number of contact positions available for each, and their default states. For more information please see Basics of Switches and Relays: An Overview of Poles and Throws.
Contact Rating (Current): The amount of current that a relay’s contacts are rated to interrupt when switching a resistive load. Ratings may differ for reactive loads and when switching AC or DC current.
Switching Voltage: The voltage that a relay’s output contacts are rated to interrupt.
Coil Current: The nominal current flow through a relay’s control coil when the indicated coil voltage is applied.
Coil Type: Whether the coil is latching or non-latching, single or dual coil.
Features: These are different capabilities or properties of the device such as arc barrier, lighted indicator, or reverse polarity.
Termination Style: Selection of termination style used to connect the device to a system, such as a connector, stud, or screw terminal.
Seal Rating: Identifies to what degree the device is sealed.
Coil Insulation: The class of insulation the relay is built to meet. For more information please see Transformer Insulation Class
Must Operate Voltage: The minimum voltage needed to energize the coil.
Must Release Voltage: The maximum applied voltage at which a relay must return to an inactive state.
Operate Time: Characterizes the time delay between the application of rated coil voltage and the closure (or opening) of all contacts that occurs as a result. Typically does not include contact bounce time.
Release Time: Characterizes the time delay between the removal of power from the device coil and all contacts returning to their rest positions. Does not include bounce time, and may be affected by the choice of control circuitry.
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and other system components.
Contact Material: The material used for the electrical contacts on the relay.
Relay Type: Indicates a relay’s internal operating mechanism, typical usage, or other distinguishing feature.
ProductExamples
| MFR PART # | JMGAPD-26M |
|---|---|
| DIGIKEY PART # | 1122-1080-ND |
| MANUFACTURER | TE Connectivity Aerospace, Defense and Marine |
| DESCRIPTION | RELAY GEN PURPOS DPDT 1A 26.5VDC |
| DATASHEET | Click Here |
| MFR PART # | 2966281 |
|---|---|
| DIGIKEY PART # | 277-4866-ND |
| MANUFACTURER | Phoenix Contact |
| DESCRIPTION | Component Mount TO-18 Circular 0.060" (1.52mm) White |
| DATASHEET | Click Here |
| MFR PART # | J104D2C12VDC.15S |
|---|---|
| DIGIKEY PART # | 2449-J104D2C12VDC.15S-ND |
| MANUFACTURER | CIT Relay and Switch |
| DESCRIPTION | Component Mount TO-18 Circular 0.060" (1.52mm) White |
| DATASHEET | Click Here |
| MFR PART # | TQ2SA-5V-X |
|---|---|
| DIGIKEY PART # | 255-TQ2SA-5V-XTR-ND |
| MANUFACTURER | Panasonic Electric Works |
| DESCRIPTION | Component Mount TO-18 Circular 0.060" (1.52mm) White |
| DATASHEET | Click Here |
SchematicSymbol
Schematic symbol courtesy of Scheme-it. Please see their website for more information and symbols.
MediaLinks
Videos
Relay Basics - Another Teaching Moment | DigiKey Electronics | DigiKey
How to Choose a Relay - Another Teaching Moment | DigiKey
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