NSD106 transistor equivalent

Hello, I am troubleshooting an amp and came across a positive pre-driver that is leaking. It is a Crown D150a and the part number listed in the service manual is NSD106. I am not seeing or finding this anywhere, or an equivalent listed either. Does anyone know what my options are, or maybe I am not looking in the right place. Digikey and Mouser have no results, even as a last resort checked eBay, nothing.

This did not give me anything close:
Bipolar Transistor Cross-reference Search | Equivalent Transistors (alltransistors.com)

Any help would be super! Thank you!
 
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