Samsung DE47-20034A Microwave Oven Thermostat

The Samsung DE47-20034A is an OEM-authorized thermostat replacement designed for use in compatible Samsung microwave ovens. The thermostat's function is critical: it monitors internal temperature and regulates the heating cycle, preventing the unit from overheating and triggering the thermal protection system. When this component fails, the microwave may heat inconsistently, shut down mid-cycle, or stop heating entirely — symptoms that are often misdiagnosed as magnetron failure. Replacing a failed thermostat at this price point is the logical first diagnostic step before committing to more expensive repairs.

This part is suited for appliance repair technicians and experienced DIYers who are comfortable working inside microwave ovens and understand the mandatory safety step of discharging the high-voltage capacitor before touching any internal component. The OEM part number ensures the replacement matches the original temperature rating and connector type for the applicable Samsung models. Confirm your microwave's model number against Samsung's compatibility data before ordering — this part is not universal across the Samsung lineup, and an incorrect purchase is avoidable with one verification step.