1. Capacitance Change of Capacitors
 (1) For SL char.
    Capacitance might change a little depending on a 
    surrounding temperature or an applied voltage.
    Please contact us if you use a strict constant time 
    circuit.
 (2) For B/E/F char.
    Capacitors have an aging characteristic, whereby 
    the capacitor continually decreases its 
    capacitance slightly if the capacitor is left on 
    for a long time. Moreover, capacitance might 
    change greatly depending on the surrounding 
    temperature or an applied voltage. Therefore, 
    it is not likely to be suitable for use in a constant 
    time circuit.
    Please contact us if you need detailed information.
2. Performance Check by Equipment
    Before using a capacitor, check that there is no 
    problem in the equipment's performance and the 
    specifications.
    Generally speaking, CLASS 2 (B/E/F char.) ceramic 
    capacitors have voltage dependence characteristics 
    and temperature dependence characteristics in 
    capacitance, so the capacitance value may change 
    depending on the operating condition in the 
    equipment. Therefore, be sure to confirm the 
    apparatus performance of receiving influence in 
    the capacitance value change of a capacitor, 
    such as leakage current and noise suppression 
    characteristic. 
    Moreover, check the surge-proof ability of a 
    capacitor in the equipment, if needed, because the 
    surge voltage may exceed specific value by the 
    inductance of the circuit.