| The life expectancy of the relay will be dramatically shortened if the contact load exceeds the maximum ratings.
The life expectancy specified in the catalog is for certain load conditions. Other factors must be taken into consideration for different circuits. A more accurate life expectancy can be measured in the actual circuit.
The two tables below show approximate load current range guidelines.
Signal Relay
| Current range |
100µA to 1mA |
1mA to 0.5A |
0.5A to 2A |
| Application |
GOOD |
VERY GOOD |
APPLICATION SPECIFIC
consult World Products |
| Contacts may be unstable.
Thermal electromotive force and contact noise should be taken into consideration.
|
Contacts are stable and highly reliable. |
Infrequent operation poses no problem, but frequent operation deteriorates contact stability.
Use of a power relay is preferred for 1 A or higher.
|
Power Relay
| Current range |
to 100 mA |
100 mA to 1 A |
A to 35 A |
| Application |
APPLICATION SPECIFIC
consult World Products |
GOOD |
VERY GOOD |
| Only for applications in which an increase in contact resistance poses no functional problems.
Use of a high capacitance type is not possible.
|
It seldom has wear on contacts or dislocation and can be used without problems. |
Since different contact phenomena occur depending on the contact load, it is necessary to check the contact load and select the correct contacts. |
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