This part is a kind of semiconductor called MRF9411.

Function of this product has High-Frequency Transistors.

Manufacturers : Motorola

Image and pinout :

Some of the text within the PDF file :

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MMBR941LT1/D The RF Line NPN Silicon Low Noise, High-Frequency Transistors Designed for use in high gain, low noise small–signal amplifiers. This series features excellent broadband linearity and is offered in a variety of packages. • Fully Implanted Base and Emitter Structure • 9 Finger, 1.25 Micron Geometry with Gold Top Metal • Gold Sintered Back Metal T1 suffix = 3,000 units per reel MMBR941 MRF947 MRF9411 SERIES • Available in tape and reel packaging options: T3 suffix = 10,000 units per reel IC = 50 mA LOW NOISE HIGH–FREQUENCY TRANSISTORS CASE 318–08, STYLE 6 SOT–23 LOW PROFILE MMBR941LT1, T3, MMBR941BLT1 CASE 419–02, STYLE 3 MRF947AT1, MRF947BT1, MRF947T1, T3 CASE 318A–05, ST [ ... ]

MRF9411 PDF Datasheet Download