This part is a kind of semiconductor called C5801.

Function of this product has 2SC5801.

Manufacturers : NEC

Image and pinout :

Some of the text within the PDF file :

DATA SHEET NPN SILICON RF TRANSISTOR 2SC5801 NPN SILICON RF TRANSISTOR FOR HIGH-FREQUENCY LOW NOISE 3-PIN LEAD-LESS MINIMOLD FEATURES • Low phase distortion, low voltage operation • Ideal for OSC applications • 3-pin lead-less minimold package ORDERING INFORMATION Part Number 2SC5801 2SC5801-T3 Quantity 50 pcs (Non reel) 10 kpcs/reel Supplying Form • 8 mm wide embossed taping • Pin 2 (Base) face the perforation side of the tape Remark To order evaluation samples, consult your NEC sales representative. Unit sample quantity is 50 pcs. ABSOLUTE MAXIMUM RATINGS (TA = +25°C) Parameter Collector to Base Voltage Collector to Emitter Voltage Emitter to Base Voltage Collector Current Total Power Dissipation Junction Temperature Storage Temperature Symbol VCBO VC [ ... ]

C5801 PDF Datasheet Download