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ナショナルトランジスタの 型番推移 |  |
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＊ | 第一世代 | 第二世代 | 第三世代 | 第四世代 |
高周波増幅（短波） | MC103 → | 2S83 | 2SA103 |
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MC104 → | 2S84 | 2SA104 |
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OC169 → | → | 2SA69 |
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OC170 → | → | 2SA70 |
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OC171 → | → | 2SA71 |
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2S180 | ||||
2S181 | ||||
周波数変換、混合（中波） | OC44 → | → | 2SA44 |
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→ | 2SA144 |
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2S66 | ||||
2S67 | ||||
周波数変換、混合（短波） | MC101 | 2S81 | 2SA101 |
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MC102 | 2S82 | 2SA102 |
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2S180 | ||||
2S181 | ||||
中間周波増幅 | OC45 → | → | 2SA55 |
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(2SA45)? |
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2SA145 |
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2S68 | * 2SA68 |
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2S69 | * 2SA69 |
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低周波増幅 | OC71 → | → | 2SB71 |
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→ | 2SB171 |
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OC75 → | → | 2SB175 |
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OC57 → | → | 2SB157 |
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OC58 → | → | 2SB158 |
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OC59 → | → | 2SB159 |
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OC60 → | → | 2SB160 |
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MC75 → | → | 2SB93 |
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2S71 → | * 2SB71 |
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OC70 → | 2S70→ | 2SB70 |
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→ | 2SB170 |
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OC72 → | → | 2SB92 |
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→ | 2SB172 |
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OC76 → | → | 2SB96 |
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→ | 2SB176 |
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2S72 | ||||
2S73 | ||||
電力増幅（中出力） | OC74 → | → | 2SB174 |
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OC77 → | → | 2SB177 |
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2S184 | ||||
電力増幅（大出力） | OC19 → | → | 2SB119 |
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OC19A → | → | 2SB119A |
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OC26 → | → | 2SB126 |
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OC27 → | → | 2SB127 |
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OC28 → | → | 2SB128 |
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OC29 → | → | 2SB129 |
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OC30 → | → | 2SB130 |
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2S77 | ||||
2S78 | ||||
2S79 | ||||
2S80 | ||||
2S182 | ||||
2S183 | ||||
低雑音電圧増幅 | 2S74 → | 2SB173 |
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スイッチング | 2S75 | |||
2S76 | ||||
一般用 | MC22 | |||
MC25 | ||||