| 摘要 |
PURPOSE:To eliminate hollow part of coil pattern by using a mixture of silver/ palladium alloy, polyvinylbutyral and solvent as the conductor paste in order to generate cyclic conductor pattern in the ferrite by alternately printing the ferrite powder and conductive paste and form an inductance element by sintering it. CONSTITUTION:A cyclic conductor pattern is formed in the ferrite by alternately printing the ferrite powder and conductor paste and an inductance element is formed by sintering it. In such a structure, a mixture of silver/palladium alloy, polyvinylbutyral and solvent is used as the conductor paste in order to prevent cavity generated by difference of contraction coefficients while magnetic paste and conductor paste are printed and laminated and then sintered. At this time, a ratio between the silver/palladium alloy and polyvinylbutyral is set to about 97:3. Thereby, disconnection of cyclic coil pattern is prevented. |
