Relay Basics
General Knowledge of Relays
- Part 1 What is a Relay?
- Part 2 Types of Omron Relays
Signal Relays
Definition
Signal relays are mainly used for lower than 2A load switching, and can be used in various applications such as telecom & network devices, test and measurement equipment, and security devices.

Features
Signal relays offer superior contact reliability even with a small signal load owing to its gold-pasted contact and bifurcated crossbar structure (see figure).
Since signal relays are mainly used to switch current, they mainly have c-contact structure. They are compatible with reflow mounting. Multiple mounting is also possible for reel packages.
- Bifurcated crossbar structure
- Reflow mounting
Types
Omron's signal relays continue to contribute to society through a wide range of variations including general purpose, small, high sensitivity, and high-frequency types and a stable quality.

Structure
Main surface mount signal relays consist of the following parts.
The coil is secondary molded, and high insulation performance between the coil and the contact is achieved while being small-sized.

Application example
- Security device
-
Gas detectors and other disaster prevention devices, alarms and other crime prevention equipment
ApplicationAlarm -
- Detector
- Control panel
- Testing and measuring device
-
Oscilloscopes and measuring devices, IC testers and other inspection devices
ApplicationInput / Output switching, power switching- Oscilloscope
- ATE
(Semiconductor test equipment)
-
- Industrial device
-
Machine tools, molding machines, welding machines, mounters and other industrial robots
ApplicationLine Switching, Control SwitchingMachine tools
-
- Amusement equipment
-
Gaming machines and peripherals
ApplicationInformation outputGaming machines
- Part 1 What is a Relay?
- Part 2 Types of Omron Relays