Multilayer ceramic capacitor
A technology of ceramic capacitors and laminates, which is applied in the direction of laminated capacitors, capacitors, fixed capacitors, etc., can solve the problems of laminated ceramic capacitors such as the decline in moisture resistance reliability, and achieve the effect of suppressing the decline in moisture resistance reliability
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Embodiment 1
[0176] to have figure 2 Multilayer ceramic capacitors with external electrodes of the configuration shown (E B1 / E A1 =0,E B2 / E A2 = 0) as an object, the monolithic laminated ceramic capacitor was fixed to the support body of the foam release sheet, and then the silane coupling agent treatment of immersing in the silane coupling agent solution was performed. By controlling the type and concentration of the silane coupling agent, and the number of dips in the silane coupling agent solution, samples having various silane coupling agent concentrations on the mounting surface and the opposing surface as shown in Table 1 were produced.
Embodiment 2
[0178] to have Figure 4 Multilayer ceramic capacitors with external electrodes of the configuration shown (E B1 / E A1 =0,E B2 / E A2 = 0) as an object, the monolithic laminated ceramic capacitor was fixed to the support body of the foam release sheet, and then the silane coupling agent treatment of immersing in the silane coupling agent solution was performed. By controlling the type and concentration of the silane coupling agent, and the number of dips in the silane coupling agent solution, samples having various silane coupling agent concentrations on the mounting surface and the opposing surface as shown in Table 2 were prepared.
[0179] As a representative example of fluorine-based silane coupling agent, CF 3 (CF 2 ) 5 (CH 2 ) 2 Si(OCH 3 ) 3 (in Table 1, expressed as fluorine-based 1 (F5)) and CF 3 (CF 2 ) 4 CONH(CH 2 ) 3 Si(OCH 3 ) 3 (In Table 1, it is represented as fluorine-based 2 (F4)). In addition, as a representative example of a carbon-based sila...
Embodiment 3
[0196] [Evaluation of electrical connectivity with land]
[0197] Use with E B1 / E A1 and E B2 / E A2 Multilayer ceramic capacitors with an electrode structure of 0, 0.5, or 1 were solder-mounted and solder-mounted, and the electrical connectivity between the land and the capacitor was compared. The number of samples to be evaluated was set to 100, and electrical connectivity was confirmed by capacitance measurement. The results are shown in Table 3.
[0198] [table 3]
[0199]
[0200] As shown in Table 3, at E B1 / E A1 and E B2 / E A2 In the area exceeding 0.5, a part of poor connection was confirmed by solder mounting. According to the section observation, it can be considered that the cause is "tombstone". On the other hand, in E B1 / E A1 and E B2 / E A2 In the area where the value is 0.5 or less, the generation of "tombstone" was not confirmed, and the connection failure was not confirmed.
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