This part is a kind of semiconductor called BB313.

Function of this product has ROBUST COMPACT ECONOMICAL BROADBAND SEISMOMETERS.

Manufacturers : PMD

Image and pinout :

Some of the text within the PDF file :

ROBUST COMPACT ECONOMICAL BROADBAND SEISMOMETERS BB313, BB313-OBS The BB313 instruments are designed as extremely robust, versatile, compact, lightweight, broadband seismic sensors. Unlike traditional seismometers, they are based on proprietary electrochemical technology 1 that provides many advantages over the conventional electromechanical sensors. Each of the three identical sensor elements in BB313 is equipped with an efficient electrodynamic force-balancing feedback. BB313 is a more compact, lighter version of our BB303 seismometer, the difference being in a slightly higher noise at longer periods. The instruments are offered in two application-dependent versions. The standard BB313-(LN) is the reduced noise version. The BB313-SM has a higher clip level and is used for strong motion a [ ... ]

BB313 PDF Datasheet Download