This part is a kind of semiconductor called 2N5427.

Function of this product has Bipolar NPN Device.

Manufacturers : Seme LAB

Image and pinout :

Some of the text within the PDF file :

2N5427 Dimensions in mm (inches). 3.68 (0.145) rad. max. 3.61 (0.142) 4.08(0.161) rad. 12 6.35 (0.250) 8.64 (0.340) Bipolar NPN Device in a Hermetically sealed TO66 Metal Package. Bipolar NPN Device. VCEO = 80V IC = 7A 24.13 (0.95) 24.63 (0.97) 14.48 (0.570) 14.99 (0.590) 0.71 (0.028) 0.86 (0.034) 11.94 (0.470) 12.70 (0.500) 4.83 (0.190) 5.33 (0.210) 9.14 (0.360) min. 1.27 (0.050) 1.91 (0.750) All Semelab hermetically sealed products can be processed in accordance with the requirements of BS, CECC and JAN, JANTX, JANTXV and JANS specifications 1 – Base TO66 (TO213AA) PINOUTS 2 – Emitter Case – Collector Parameter VCEO* IC(CONT) hFE ft PD Test Conditions @ 2/2 (VCE / IC) * Maximum Working Voltage Min. 50 Typ. 30M Max. 80 7 120 40 Units V A Hz W This is a shortfor [ ... ]

2N5427 PDF Datasheet Download