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Resettable thermal cutoff devices
27 March 2019, Circuit & System Protection
The SC series of miniature resettable thermal cutoff (TCO) devices is Bourns' new generation of surface-mount, miniature resettable thermal cutoff devices, following the established SA series.
Miniature resettable thermal cutoff devices have traditionally been used in battery packs that use welding for assembly. However, the new SC series opens these circuit protection devices to multiple new applications as they can be reflow soldered onto printed circuit boards.
The parts feature current capabilities from 5,5 A up to 8 A at 60°C and are available in two height options. The very low-profile SCxxAAB option has a height of just 0,94 mm ±0,05 mm, and the reinforced SCxxAAA option, at 1,07 mm ±0,05 mm, is designed to withstand the high injection moulding pressures commonly experienced during USB cable manufacturing.
The SC series is also designed to withstand humid environments and employs a high corrosion resistance bimetal mechanism. The primary application for these devices is battery cell protection in smartphones and USB 3.1 type C cables. |
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