2N3287 thru 2N3290 (SILICON) CASE 20 (TO·72) NP.
Motorola
2N3287 - NPN silicon annular transistors
2N3287 thru 2N3290 (SILICON) CASE 20 (TO·72) NPN silicon annular transistors for high-gain, lownoise amplifier, oscillator, mixer and frequency mult.