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Bourns Unveils its Smallest Automatically Resettable Surface Mount Mini-breaker Device

Bourns Unveils its Smallest Automatically Resettable Surface Mount Mini-breaker Device

13 November 2023
Model SW Miniature Thermal Cutoff (TCO) device is designed to provide lower current application overtemperature protection and can be used as an overtemperature sensor

RIVERSIDE, Calif., November 8, 2023 - Bourns, Inc., a leading manufacturer and supplier of electronic components for power, protection, and sensing solutions, today announced its smallest surface mount mini-breaker TCO device. The Bourns Model SW mini-breaker has a 4.7 mm x 2.8 mm footprint with a height of just 0.94 mm. Designed to control abnormal, excessive temperature virtually instantaneously, up to rated limits, the Model SW mini-breaker is an optimal overtemperature protection solution for a wide range of applications that include LED systems, wireless charging coils, motors, and for a variety of printed circuit board components. This new model mini-breaker can also be used as an overtemperature sensor.

The new Model SW mini-breaker complements Bourns' latest Model SD Series with features and functionality that meet lower current protection application requirements. It offers a trip temperature setting of 70 °C ±5 °C, with maximum resistance values of 5 mΩ. For wireless charging applications, this mini-breaker model can operate up to 100 V peak (AC 128 kHz). Manufactured using Bourns' highest rated corrosion resistant bimetal mechanism, this mini-breaker model is also designed to withstand humid environments.

Bourns Model SW mini-breaker device is available now and is RoHS* compliant. For detailed product information, please see:

About Bourns

Bourns, Inc. is a leading manufacturer and supplier of position and speed sensors, circuit protection solutions, magnetic components, microelectronic modules, panel controls and resistive products. Headquartered in Riverside, California, USA, Bourns serves a broad range of markets, including automotive, industrial, consumer, communications, medical (low/medium risk)***, audio and various other market segments. Additional company and product information is available at

Bourns and the Bourns logo are registered trademarks of Bourns, Inc. and may be used only with the permission of Bourns and proper acknowledgement. Other listed names and brands are trademarks or registered trademarks of their respective owners.

*RoHS Directive 2015/863, Mar 31, 2015 and Annex.

**Bourns products have not been designed for and are not intended for use in "lifesaving," "life-critical" or "life-sustaining" applications nor any other applications where failure or malfunction of the Bourns product may result in personal injury or death. See Legal Disclaimer Notice

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