Diotec bidirectional axial transient voltage suppressors diotec bzw 06 28 b the bzw06 28b is a bidirectional axial leaded transient voltage suppression diode with a vwm of 282v and a nominal vbr of 33v designed to protect electronic circuits from voltage spikes and overvoltage faults diotec bzw06 28b suppresion diode 131a 33v