2N5298 semiconductor manufactured by Sylvania, listed as 2N5298 (circa 1979).

2N5297 semiconductor manufactured by Sylvania, listed as 2N5297 (circa 1979).

2N5296 semiconductor manufactured by Sylvania, listed as 2N5296 (circa 1979).

2N5295 semiconductor manufactured by Sylvania, listed as 2N5295 (circa 1979).

2N5294 semiconductor manufactured by Sylvania, listed as 2N5294 (circa 1979).

2N5293 semiconductor manufactured by Sylvania, listed as 2N5293 (circa 1979).

2N5292 semiconductor manufactured by Sylvania, listed as 2N5292 (circa 1979).

2N5278 semiconductor manufactured by Sylvania, listed as 2N5278 (circa 1979).

2N5277 semiconductor manufactured by Sylvania, listed as 2N5277 (circa 1979).

2N5275 semiconductor manufactured by Sylvania, listed as 2N5275 (circa 1979).

2N5274 semiconductor manufactured by Sylvania, listed as 2N5274 (circa 1979).

2N5273 semiconductor manufactured by Sylvania, listed as 2N5273 (circa 1979).

2N5272 semiconductor manufactured by Sylvania, listed as 2N5272 (circa 1979).

2N5264 semiconductor manufactured by Sylvania, listed as 2N5264 (circa 1979).

2N5262 semiconductor manufactured by Sylvania, listed as 2N5262 (circa 1979).

2N5249A semiconductor manufactured by Sylvania, listed as 2N5249A (circa 1979).

2N5248 semiconductor manufactured by Sylvania, listed as 2N5248 (circa 1979).

2N5247 semiconductor manufactured by Sylvania, listed as 2N5247 (circa 1979).

2N5246 semiconductor manufactured by Sylvania, listed as 2N5246 (circa 1979).

2N5245 semiconductor manufactured by Sylvania, listed as 2N5245 (circa 1979).