Precaution 1. Do not use capacitors in devices exposed to extreme environments. (1) Water, saltwater or high condensation. (2) Oil or oil spatters (3) Toxic gas such as nitric acid, hydrogen sulfide, sulfuric acid, chlorine or ammonium. (4) Direct sunlight, ultraviolet rays, ozone or radiation. 2. Do not use capacitors in devices exposed to extreme vibration, mechanical shock or stress exceeding specified limits in the product literature.

Explanatory Notes 1. If environmental conditions are inappropriate where capacitors are used, the capacitors may be damaged or deteriorate and not meet the assured lifetime specified in the product literature. (1) Water or saltwater spattering or condensation on the terminals of capacitors cause capacitors to discharge electricity and the device circuits to fail due to a short circuit. The capacitors may also be damaged under these conditions. (2) If oil spatters come in contact with capacitors, the oil will cause swelling of the rubber sealing material and deterioration of seal performance which will reduce the lifetime of the capacitor. (3) Avoid exposing capacitors to toxic gas such as hydrogen sulfide, nitric acid, sulfuric acid, chlorine and ammonium. Toxic gasses will oxidize metals and penetrate capacitors causing electrical and mechanical damage. (4) Direct sunlight, ultraviolet rays, ozone or radiation will cause deterioration of the polymers of the sealing material which mechanically weakens the seal and subsequently shortens the lifetime of the capacitors. 2. Vibration, mechanical shock or stress exceeding specified limits for capacitors may affect capacitor performance or cause capacitor failure due to broken lead wires or terminals and poor connections with the internal element. The extent of vibration and mechanical stress will determine if it is necessary to anchor the body of the capacitor, in addition to the terminals, to the printed circuit board. Specially designed capacitors may be necessary. Consult United Chemi-Con for assistance.