Download the 2SC4639 datasheet PDF.
This datasheet also covers the 2SC4641 variant, as both devices belong to the same transistor family and are provided as variant models within a single manufacturer datasheet.
Full PDF Text Transcription for 2SC4639 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
2SC4639. For precise diagrams, and layout, please refer to the original PDF.