The 2SC3357 = NE85634 was a CATV RF Transistor manufactured by the japanese semiconductor giant RENESAS (merger of Mitsubishi & Hitachi & NEC) and later CEL (CA/USA - NEC partner). Production was discontinued in 2018. Unitronic (Taiwan)? too produced RF-transistors labeled as 2SC3357, obsolete too. The NE86534 (2S3357) were frequently used in Japanese Radio devices. Clifton Labs Jack Smith used it in his Norton Amplifiers.
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The 2SC3357 offered since recently by Digikey are sourced from the the Hong-Kong based company EVVOSEMI. Althoug they carry the label 2SC3357, RF transistors from different manufacturers will very likely meet particular rated key values of parts offered as 2S3357, but they must not be identical in all parameters. It's worth to give'm a try.
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regards, Fred
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