| 2N3439 | High Voltage Semi-Conductor Specialists | Military and Industrial Medium Power Transistors |
| 2N3440 | High Voltage Semi-Conductor Specialists | Military and Industrial Medium Power Transistors |
| 2N5415 | High Voltage Semi-Conductor Specialists | Silicon PNP Power Transistors |
| 2N5416 | High Voltage Semi-Conductor Specialists | Silicon PNP Power Transistors |
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