This part is a kind of semiconductor called BLF2047L-90.
Function of this product has UHF power LDMOS transistor.
Manufacturers : Philips
Image and pinout :
Some of the text within the PDF file :
DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D379 BLF2047L/90 UHF power LDMOS transistor Product specification Supersedes data of 2000 Feb 17 2000 Mar 06 Philips Semiconductors UHF power LDMOS transistor Product specification BLF2047L/90 FEATURES • High power gain • Easy power control • Excellent ruggedness • Source on underside eliminates DC isolators, reducing common mode inductance • Designed for broadband operation (1.8 to 2.0 GHz) • Internal input and output matching for high gain and efficiency. APPLICATIONS • Common source class-AB operation for PCN and PCS applications in the 1800 to 2000 MHz frequency range. PINNING PIN 1 2 3 handbook, halfpage DESCRIPTION drain gate source, connected to flange 1 23 DESCRIPTION Silicon N-channel enhancement mode la [ ... ]