Bourns P6SMB Transient Voltage Suppressor Diode Series offers 6.8V to 550V Breakdown Voltages with typical fast response times of less than 1.0 picoseconds for unidirectional devices and less than 5.0 picoseconds for bidirectional devices from 0V to Minimum Breakdown Voltage. The diodes are designed for surge and ESD protection applications in a compact chip package DO-214AA (SMB) size format.