This part is a kind of semiconductor called DM311.

Function of this product has Microwave Detector.

Manufacturers : S-Team

Image and pinout :

Some of the text within the PDF file :

DM311 Microwave Detector General description DM311 is a general-purpose zero-bias Schottky diode microwave coaxial detector with N-connector intended for 5.8 GHz industrial applications. The detector delivers well-scaled DC voltage as a function of incident microwave power. Specifications Frequency range Output voltage (PIN = 1 mW, RLOAD = 33 kΩ) Frequency response variation Statistical spread of output voltage Temperature variation of output voltage Output voltage polarity Maximum input power VSWR Video resistance Input connector DC output connector Dimensions (L x W x H) 5.5 – 6.1 GHz 220 mV typ. ±0.5 dB max. ±1 dB (3-σ deviation) < 0.5 dB in 5 to 65 0C range Negative 10 mW 1.3 typ., 2 max. 8 kΩ typ. N-M SMA-F 46.9 x 19.4 x 19.4 mm Typical transfer chara [ ... ]

DM311 PDF Datasheet Download