This part is a kind of semiconductor called ADT1-1WT-1.

Function of this product has Surface Mount RF Transformer.

Manufacturers : Mini-Circuits

Image and pinout :

Some of the text within the PDF file :

Surface Mount RF Transformer ADT1-1WT-1 1 to 400 MHz Maximum Ratings Operating Temperature Storage Temperature RF Power -40°C to 85°C -55°C to 100°C 250 mA CASE STYLE: CD542 Pin Configuration primary dot primary secondary dot secondary secondary ct not used 3 1 4 6 5 2 Ω RATIO Electrical Specifications FREQUENCY (MHz) INSERTION LOSS* PHASE UNBALANCE (Deg.) Typ. 2 dB 1 dB bandwidth RETURN LOSS (dB) 1 dB 2 dB bandwidth 3 dB MHz 2 dB MHz 1 dB MHz 1-400 bandwidth bandwidth Outline Drawing 1 1-400 3 16 * Insertion Loss is referenced to mid-band loss, 0.5 dB typ. 75 ohm system. Outline Dimensions ( inch mm ) A .280 7.11 J .030 0.76 B .310 7.87 K .065 1.65 C .220 5.58 L .300 7.62 D .100 2.54 E .112 2.84 wt. grams .20 F .055 1.40 G .100 [ ... ]

ADT1-1WT-1 PDF Datasheet Download