  Processing results of measurements of linear thermal expansion coefficients
and linear thermal expansion of two brands of borosilicate glasses --- LK5 and
Borofloat 33 --- are presented. The linear thermal expansion of glass samples
have been determined in the temperature range 130 to 800 K (minus 143 to 526
$\deg$C) using thermomechanical analyzer TMA7100. Relative imprecision of
indirectly measured linear thermal expansion coefficients and linear thermal
expansion of both glass brands is less than $\pm$5 % and $\pm$3 % respectively.
Polynomial equations, approximating temperature dependence of obtained
measurements, are presented. The results will facilitate the modeling of the
characteristics of the devices which are used in microsystems engineering and
fabricated by anodic bonding of silicon to glass, they can also be used to
optimize the temperature regime of silicon to glass bonding process. Keywords:
linear expansion, thermal expansion coefficient, thermomechanical analysis,
borosilicate glass.
