Brands Guides About
Samsung DE47-20034A Microwave Oven Thermostat — main product image
Samsung

Samsung DE47-20034A Microwave Oven Thermostat

★★★★★4.0 (91 reviews)

Restore precise temperature control to your Samsung microwave with this OEM-authorized direct-fit thermostat replacement.

$17.25*
✓ In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

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.

Key Features

This is an O.E.M. Authorized part

Fits with various Samsung brand models

Oem part DE47-20034A

Country of Origin: United States

Specifications

Brand
Samsung
Part Number
DE47-20034A
Part Type
Thermostat
Application
Samsung microwave ovens (model-specific)
OEM Status
OEM Authorized
Country of Origin
United States

Pros & Cons

👍 Pros

  • OEM-authorized part guarantees the temperature threshold and terminal configuration match the original factory specification exactly.
  • Direct-fit design for compatible Samsung models means no modification or adapter work during installation.
  • Manufactured in the United States per product documentation.
  • Replacing a failed thermostat is significantly less expensive than replacing the entire microwave or the magnetron assembly.

👎 Cons

  • Compatibility is model-specific — the part fits "various" Samsung models but not all, requiring verification before purchase.
  • No installation instructions are included, so the installer must source the service manual independently.
  • Internal microwave repair involves high-voltage components; safe installation requires technical knowledge beyond typical DIY comfort level.
  • A thermostat failure may be a symptom of a deeper underlying issue — replacing this part doesn't diagnose root cause if another component caused it to fail.

Frequently Asked Questions

Check your microwave's model number on the label inside the door or on the back panel, then cross-reference with Samsung's part compatibility list. The DE47-20034A is designed to fit various Samsung microwave models, but "various" is not "all" — confirm your specific model number before ordering to avoid a return.
A failed thermostat in a microwave typically presents as the unit running but not heating, overheating and shutting off prematurely, or displaying temperature-related error codes. If the microwave trips its thermal cutout repeatedly, the thermostat is one of the first components to test before replacing more expensive parts like the magnetron.
Samsung lists this as an OEM authorized part under the DE47-20034A part number. That means it meets the same manufacturing specification as the component originally installed in the microwave — not a third-party approximation with potentially different temperature thresholds or terminal configurations.
Microwave internal components carry lethal stored voltage in the capacitor even when unplugged. Unless you are trained in appliance repair and know how to safely discharge a microwave capacitor, this is a job for a qualified technician. The part itself is a straightforward swap, but the safety hazard is significant.
Replacement thermostats at this price point typically ship as the component only, without installation documentation. Samsung service manuals for the specific microwave model are the correct reference for installation procedures and torque specs.

Related Products