Hitachi, Ltd.

Yoshihiro Uchino

Yasushi Sasaki

Masataka Sasaki

Yutaka Maeno

Masahiro Sano

Kiyotaka Tomiyama

Shogo Tani

In an inverter maintenance system, while an inverter of a user, a user support server of maker, and also, a portable telephone capable of accessing to a Web server are employed, such information required to maintain/manage the inverter is transferred/received by way of the portable telephone. Thus, various sorts of requests can be accepted by both the user support server and the Web server.

Inverter maintenance system and inverter

In a semiconductor device, a lead frame is adhered to a base substrate for heat dissipation via an insulating layer, and an outward guided terminal portion is formed by perpendicularly upwardly bending an end of the lead frame after the mounting of one or more of power semiconductor elements on the lead frame. A recessed portion is formed beforehand in a portion of the lead frame to be bent, and it is ensured that the lead frame does not adhere to the surface of the base substrate in this recessed portion when the lead frame is adhered to the base substrate via the insulating layer before the bending of the lead frame. By virtue of this structure, manufacturing is simplified and manufacturing costs are reduced.

Power converter with improved lead frame arrangement including stand-up portion

Lead frame for a semiconductor device

Growing community of inventors

Funabashi, Japan

Yoshihiro Uchino