Caution/Notice Caution Notice c Storage and Operation Conditions c Rating 1. Capacitance Change of Capacitor c Rating <DES/DEH/DEA/DEB/DEC Series> c Soldering and Mounting 1. Operating Voltage 1. Cleaning (ultrasonic cleaning) 2. Operating Temperature and Self-generated Heat 3. Fail-safe 4. Load Reduction and Self-generated Heat During Application of High-frequency and High-voltage <DEF Series> 1. Operating Voltage 2. Operating Temperature and Self-generated Heat 3. Fail-safe c Soldering and Mounting 1. Vibration and Impact 2. Soldering 3. Bonding, Resin Molding and Coating 4. Treatment after Bonding, Resin Molding and Coating Caution c Storage and Operation Conditions The insulating coating of capacitors does not form a product quality by testing the performance of a perfect seal therefore, do not use or store cleaned, bonded or molded product in the intended capacitors in a corrosive atmosphere, especially equipment. Store the capacitors where the where chloride gas, sulfide gas, acid, alkali, salt temperature and relative humidity do not exceed -10 or the like are present. Also, avoid exposure to to 40 degrees centigrade and 15 to 85%. moisture. Before cleaning, bonding or molding this Use capacitors within 6 months after delivery. product, verify that these processes do not affect Check the solderability after 6 months or more. c Rating <DES/DEH/DEA/DEB/DEC Series> 1. Operating Voltage When DC-rated capacitors are to be used in AC or ripple When using the low-dissipation DEA (SL Char.) /DEC (SL current circuits, be sure to maintain the Vp-p value of the Char.) /DEH (C, R Char.) /DES (D Char.) series in a applied voltage or the Vo-p that contains DC bias within high-frequency and high-voltage circuit, be sure to read the rated voltage range. the instructions in item 4. When the voltage is applied to the circuit, starting or When DC-rated capacitors are to be used in input circuits stopping may generate irregular voltage for a transit from commercial power source (AC filter), be sure to use period because of resonance or switching. Be sure to use Safety Certified Capacitors because various regulations a capacitor with a rated voltage range that includes these on withstand voltage or impulse withstand established for irregular voltages. each type of equipment should be taken into consideration. Voltage DC Voltage DC+AC Voltage AC Voltage Pulse Voltage (1) Pulse Voltage (2) Positional V0-p V0-p Vp-p Vp-p Vp-p Measurement 2. Operating Temperature and Self-generated Heat Keep the surface temperature of a capacitor below the Excessive heat may lead to deterioration of the upper limit of its rated operating temperature range. Be capacitor s characteristics and reliability. sure to take into account the heat generated by the (Never attempt to perform measurement with the cooling capacitor itself. When the capacitor is used in a high- fan running. Otherwise, accurate measurement cannot frequency current, pulse current or similar current, it may be ensured.) self-generate heat due to dielectric loss. The frequency of the applied sine wave voltage should be less than *Before using the low-dissipation DEA/DEC (SL Char.) 300kHz. The applied voltage load (*) should be such that /DEH/DES series, be sure to read the instructions in the capacitor s self-generated heat is within 20C in an item 4. atmospheric temperature of 25C. When measuring, use a thermocouple of small thermal capacity-K of 0.1mm in conditions where the capacitor is not affected by radiant heat from other components or surrounding ambient fluctuations. 3. Fail-Safe When the capacitor is broken, failure may result in a short circuit. Be sure to provide an appropriate fail-safe function like a fuse on your product if failure could follow an electric shock, fire or fume. Continued on the following page.