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Reflowable Thermal Switch for protection against thermal runaway

September 23, 2021


Santa Rosa


United States

SCHURTER’s RTS series is a compact thermal protection device. Power semiconductors such as MOSFETs, ICs, IGBTs, TRIACs, SCRs, etc. can overheat and lead to thermal runaway, due to their inherent self-reinforcing heat-producing behavior. The RTS is designed to protect against such overheating, reliably and precisely interrupting the circuit at a pre-defined temperature.

RTS stands for “Reflowable Thermal Switch”. The RTS can be mounted using conventional reflow soldering techniques with temperature profiles up to 260 °C. After the solder process, the RTS is mechanically activated by depressing the top into place, arming the RTS to trip at 210 °C. It can be performed manually or automatically in the case of several devices being activated at once. This contrasts
with devices using an additional contact for electrical activation. The status of the RTS is clearly and immediately
visible to the installer. The need for an additional contact is also eliminated.

The RTS sustains operating currents up to 130 A at rated voltages of up to 60 VDC in a remarkable compact package measuring 6.6 x 8.8 mm in size. Customer-specific versions are available. Added features include integrated shunt or overcurrent protection, resulting in less space consumed on the printed circuit board.

The RTS meets the high reliability requirements of AEC-Q200 and MIL-STD. Data sheet link for the RTS is  For sales and product information, contact Cora Umlauf at (800) 848-2600 or by email at


The SCHURTER Group is the world's leading Swiss technology company providing components and complex
solutions that ensure safe power supply and simplified equipment operation. The company’s professional
competence, financial independence, innovative strength and distinctive corporate culture, propel the
SCHURTER Group, together with its customers and partners, into the digital future. The safe&easy brand claim
not only refers to the products, but also the company’s business philosophy, which strives for sustainable
success through innovation, high-quality products and service, flexibility and proximity to customers.

SCHURTER is known globally as an innovator, manufacturer and distributor of fuses, connectors, circuit
breakers, switches, EMC products, and input systems. Touch screens and touch panels, capacitive sensor
keypads, membrane keypads and housing systems are developed in close cooperation with its customers. Within
its business unit Solutions, SCHURTER combines all competencies and puts them at the customer's disposal.
SCHURTER products and solutions are developed especially for specific industry segments – medical, data and
communication, automotive, avionics & space, energy and the broader industrial market. SCHURTER considers
the quality of its products and services as the key factor to the company's lasting success. Its management and
improvement processes are designed and certified according to ISO 9001, ISO 13485, ISO 14001, ISO 45001
and IATF 16949, using the EFQM and Baldrige Excellence Models, as well as the application of Lean
Management principles such as Value Stream Planning, Power Innovation, SSO, and Six Sigma.

SCHURTER Inc., Santa Rosa, California is the exclusive North America sales and distribution office for the