Chip fuses offer precise and low loss for secondary overcurrent protection

The new SCHURTER UST 1206 chip fuses are now available from Rutronik's portfolio. The latest variation with an extended power range can withstand rated currents of up to 35A at a rated voltage of 32VAC or 63VDC and complies with the UL 248-14 standard for long-term reliability. The fuses impress with exceptionally precise tripping times and very low power losses and tolerate operating temperatures from -55C to +90C. The components are resistant to vibrations and pulse loads, have cURus approval, and are halogen-free and RoHS-compliant. They are excellent for use in applications with high current requirements at low voltages, such as in motors or power converters.

Due to strong customer demand, SCHURTER has expanded its UST 1206 series of chip fuses to incorporate more powerful versions: The UST 1206, previously available with rated currents from 50mA to 25A, is now also available with a rated current of 35A at rated voltages of 32VAC or 63VDC. This makes it even more powerful and particularly compact. The surface-mountable fuses with slow-blow characteristics have a high integral melting current I²t for even better tolerance of inrush currents and can withstand temperatures from -55C to +90C. They are also provided with the patented SMD thermal fuse to stop thermal runaway.

The fuses meet UL 248-14 standards for long-term reliability and are suitable for use in secondary overcurrent protection.

Main features:

• Rated currents up to 35A
• Rated voltage 32VAC or 63VDC
• Operating temperature from -55C up to +90C
• Complies with UL 248-14 standard
• 'Slow-blow' characteristic to cope with inrush current peaks
• Surface mountable

Application examples include secondary overcurrent protection DC and AC, circuits with inrush current peaks, LCD backlighting, and DC/AC inverters.