A Using Relays
• When actually using Relays, unanticipated failures may occur. It is 
therefore essential to test the operation is as wide of range as 
possible. 
• Unless otherwise specified in this catalog for a particular rating or 
performance value, all values are based on JIS C5442 standard 
test conditions (temperature: 15 to 35°C, relative humidity: 25% to 
75%, air pressure: 86 to 106 kPa). When checking operation in the 
actual application, do not merely test the Relay under the load 
conditions, but test it under the same conditions as in the actual 
operating environment and using the actual operating conditions.
• The reference data provided in this catalog represent actual 
measured values taken from samples of the production line and 
shown in diagrams. They are reference values only. 
• Ratings and performance values given in this catalog are for 
individual tests and do not indicate ratings or performance values 
under composite conditions. 
D Operating and Storage 
Environments
1
2
3
4
5
6
7
8
Operating, Storage, and Transport 
Operating Atmosphere 
Using Relays in an Atmosphere Containing Corrosive Gas (Silicon, Sulfuric, or Organic Gas) 
Adhesion of Water, Chemicals, Solvent, and Oil 
Vibration and Shock 
External Magnetic Fields 
External Loads 
Adhesion of Magnetic Dust 
C-9
E Relay 
Mounting 
Operations
A Plug-in Relays 1
2
3
Panel-mounting Sockets 
Relay Removal Direction 
Terminal Soldering
C-10
B Printed Circuit 
Board Relays
1 Ultrasonic Cleaning
C Common Items 1
2
3
4
Removing the Case and Cutting Terminals 
Deformed Terminals 
Replacing Relays and Performing Wiring Operations 
Coating and Packing
F Handling Relays 1
2
Vibration and Shock 
Dropped Products
C-11
G Relays for Printed Circuit Boards 
(PCBs)
1
2
3
4
5
6
7
8
9
10
Selecting PCBs, (1) PCB Materials
Selecting PCBs, (2) PCB Thickness 
Selecting PCBs, (3) Terminal Hole and Land Diameters
Mounting Space
 A Ambient Temperature
 B Mutual Magnetic Interference
Pattern Design for Noise Countermeasures
 A Noise from Coils
 B Noise from Contacts
 C High-frequency Patterns
Shape of Lands 
Pattern Conductor Width and Thickness 
Conductor Pitch 
Securing the PCB 
Automatic Mounting of PCB Relays
C-11
H Troubleshooting C-15
No. Area No. Classification No. Item Page
http://www.ia.omron.com/
C-3
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