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| 2N520A | 01295 | TEXAS INSTRUMENTS INCORPORATED |
| 2N520A | 07256 | SILICON TRANSISTOR CORP SUB OF BBF INC |
| 2N520A | 08225 | INDUSTRO TRANSISTOR CORP |
| 2N520A | 12045 | ELECTRONIC TRANSISTORS CORP |
| 2N520A | 14936 | GENERAL SEMICONDUCTOR INC |
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