Dust cover type and solder resist type may cause malfunction due to surface treatment agent getting inside the relay, so do not perform surface treatment or install the relay after surface treatment.

Some surface treatment agents may have an adverse effect on the relay, such as dissolving the housing, so please select them carefully and check them during actual use.

Whenever possible, use the spraying or brushing process for surface treatment, and do not use the dip-coating process. Use liquid surface treatment agent at room temperature as much as possible, and spray the surface treatment agent only when the relay is cooled down to room temperature. The surface treatment agent can be dried naturally; it can also be dried at a constant temperature, but the drying temperature should not exceed 60*. It is also forbidden to lower the drying temperature before the surface treatment agent is dried, otherwise the surface treatment agent may be sucked back into the relay and fail.

When special surface treatment process is used, please contact us for confirmation in order to provide suitable products.