These 6.5 kW rated transient voltage suppressors in a surface mount package are provided with design features to minimize thermal resistance and cumulative heating. These devices have the ability to clamp dangerous high voltage, short term transients such as those produced by directed or radiated electrostatic discharge phenomena before entering sensitive component regions of a circuit design. Typical applications include lighting and automotive load dump protection. They are particularly effective at meeting the multi-stroke lightning standard RTCA DO-160, section 22 for aircraft design. This efficient low profile package design is offered in standoff voltage selections (Vwm) of 10 volt to 48 volts in either unidirectional or bidirectional construction