Sensuke Okada
Hitachi
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Publication
Featured researches published by Sensuke Okada.
Proceedings., 39th Electronic Components Conference | 1989
Hirokazu Inoue; Akira Tanaka; Masahide Okamoto; Hideo Arakawa; Sensuke Okada; Kunpei Yamada
A low-thermal-resistance, high-speed pin-grid-array (PGA) package is discussed. To obtain low thermal resistance, a silicon chip was soldered onto a metallized aluminum nitride ceramic substrate that directly contacts an air-cooled fin (a cavity-down structure). Low propagation delay was realized by placing signal lines between low-dielectric-constant polyimide layers that were coated on the substrate. The thermal resistance from the silicon chip to the air environment was 2.7 degrees C/W with a 20-mm-high fin when the air velocity was 2 m/s. The self-inductance of the longest signal line was 20 nH, and the capacitance between the longest signal lines was 1.7 pF. The helium leakage level was about 10/sup -9/ atm-cm/sup 3//s even after 24 cycles in a thermal cycle test from -55 degrees C to 150 degrees C.<<ETX>>
Archive | 1989
Masahisa Sobue; Sensuke Okada; Kimihiko Akahori; Keiichi Kuniya; Toshimi Sasaki; Toshiyuki Kajiwara; Tomoaki Kimura; Mitsuo Nihei
Archive | 1998
Hirofumi Seki; Satoshi Ichimura; Satoshi Takemori; Eiji Setoyama; Kouji Ishiguro; Yasuhiro Mochizuki; Sensuke Okada; Hajime Murakami
Archive | 1997
Akira Tanaka; Tadao Kushima; Hideo Shimizu; Sensuke Okada; Yoshihiko Koike; Kazuji Yamada; Ryuichi Saito
Archive | 1997
Hirokazu Inoue; Ryoichi Kajiwara; Yoshihiko Koike; Masahiro Koizumi; Shigehisa Kuribayashi; Yasutoshi Kurihara; Tadao Kushima; Kinya Nakatsu; Sensuke Okada; Ryuichi Saito; Hideo Shimizu; Yukio Sonobe; Kazuhiro Suzuki; Akira Tanaka
Archive | 1984
Masahisa Sobue; Sensuke Okada; Kimihiko Akahori; Keiichi Kuniya; Toshimi Sasaki; Toshiyuki Kajiwara; Tomoaki Kimura; Mitsuo Nihei
Vacuum | 1998
Hirofumi Seki; Y. Ueno; Satoshi Ichimura; Satoshi Takemori; S. Uchikawa; H. Murakamia; Sensuke Okada; Yasuhiro Mochizuki; Eiji Setoyama
Archive | 1997
Yoshihiko Koike; Tadao Kushima; Sensuke Okada; Ryuichi Saito; Hideo Shimizu; Akira Tanaka; Kazuji Yamada
Archive | 1997
Akira Tanaka; Hirokazu Inoue; Tadao Kushima; Yoshihiko Koike; Hideo Shimizu; Ryuichi Saito; Kazuhiro Suzuki; Yasutoshi Kurihara; Sensuke Okada; Masahiro Koizumi; Ryoichi Kajiwara; Yukio Sonobe; Kinya Nakatsu; Shigehisa Kuribayashi
Archive | 1997
Yoshihiko Koike; Tadao Kushima; Sensuke Okada; Ryuichi Saito; Hideo Shimizu; Akira Tanaka; Kazuji Yamada
