Low dielectric materials that can take on multiple forms and endure mechanical stress are vital given the rising demand in lightweight and flexible electronics for applications like wearable technology. It is possible to create stretchy dielectric layers with semi-organic crystals that keep their electrical characteristics even when folded or strained. The purpose of this study is to investigate the optical and electrical properties of L-histidinetetrafluoroborate (LHTFB), a semi-organic NLO single crystal with outstanding mechanical properties and strong nonlinearity, through doping with magnesium. Bare and Mg doped crystals were grown by solution growth method and analyzed for its structural, optical, NLO and dielectric analysis. The dielectric permittivity measurements obtained reveal that magnesium drops the value below 4, which is lower than silica. These crystals' low permittivity and low loss factor point to their potential application in the microelectronics industry for elevated device performance, less power usage, optimized signal integrity, and continued semiconductor technological progress towards smaller, quicker, and greater energy-efficient electronic devices.