Steel panel dampers are very economical, easy to maintain and widely used as vibration control devices for building structure. However, this dampers are fractured in the center part under repeated loading so that the strength degrades after attaining the maximum resisting capacity. This issue and other many problems had been pointed out by many researchers. In this paper, the performance of steel panel damper has been enhanced by introducing cover plates on the panel on both side so that the lateral out of plane buckling of panel was protected. Thus, the deformation behavior as well as its hysteretic characteristics of a newly proposed Out-of-plan buckling resisting steel damper (BRSD) were studied