The utility model discloses a protective MOS tube, and relates to the technical field of MOS tubes. Comprising an MOS tube main body, the back surface of the MOS tube main body is provided with an
assembly groove, a
metal protection sheet is clamped through the
assembly groove, the
metal protection sheet is provided with a strip-shaped clamping groove, the MOS tube main body comprises a plastic
package shell, a
lead frame and an MOS
chip, the
lead frame is installed in the plastic
package shell, and the MOS
chip is welded on a bonding pad of the
lead frame. According to the protection type MOS tube, when the protection type MOS tube needs to be transported or carried, the
metal protection sheets are detached from the assembling grooves and clamped at the pins under the action of the strip-shaped clamping grooves, the stress surface is increased, the structural strength of the pins is improved, and therefore the protection effect is achieved, and when the protection type MOS tube is used, the metal protection sheets are detached from the pins and reassembled into the assembling grooves, so that the metal protection sheets are not damaged. And the heat-conducting
copper sheet is attached to the heat-conducting
copper sheet, so that the heat dissipation area can be enlarged, heat
convection can be accelerated, efficient heat dissipation can be realized, and stable work of the MOS tube can be ensured.