Patent
1989-09-13
1990-04-10
Mintel, William
357 71, 357 38, 357 53, H01L 2714
Patent
active
049165020
ABSTRACT:
A multilayer substrate (18) has two ceramic plates (111, 114) and a shielding metal layer (113) provided between the ceramic plates. An electronic circuit having a TRIAC (7) and a photocoupler (5) is provided on the multilayer substrate. The shielding metal layer and a second main electrode (T.sub.2) of the TRIAC are connected with each other by solder filled in a through hole 116. External noise is captured by the shielding metal layer, to be propagated to the second main electrode.
Mintel William
Mitsubishi Denki & Kabushiki Kaisha
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