This part is a kind of semiconductor called BLF888D.
Function of this product has UHF power LDMOS transistor.
Manufacturers : NXP
Image and pinout :

Some of the text within the PDF file :
BLF888D; BLF888DS UHF power LDMOS transistor Rev. 2 27 June 2014 Product data sheet 1. Product profile 1.1 General description A 600 W LDMOS RF power transistor for broadcast Doherty transmitter applications. The excellent ruggedness of this device makes it ideal for digital and analog transmitter applications. Table 1. Application information RF performance at VDS = 50 V in an ultra wide Doherty application. Test signal f PL(AV) Gp D (MHz) (W) (dB) (%) DVB-T (8k OFDM) 470 to 860 115 to 134 [1] 17 40 to 48 [1] IMDshldr (dBc) 38 to 44 [2] PAR (dB) 8 [3] [1] Depending on selected channel. [2] Depending on exciter used. [3] PAR (of output signal) at 0.01 % probability on CCDF; PAR of input signal = 9.5 dB at 0.01 % probability on CCDF. 1.2 Features and benefits [ ... ]
BLF888D PDF Datasheet Download
