Open LED shunt protectors

30 March 2011 Circuit & System Protection

New from Bourns is a line of open LED shunt protection devices designed specifically for LED lighting applications. Designated the LSP series, the new shunt protector family enables LED lighting applications configured in strings to be more robust and reliable.

Most LED designs include solid-state lighting luminaries configured in series strings of 20 or more LEDs. In this configuration, an open LED can cause the entire LED string to go dark, resulting in reduced performance and possible maintenance calls and costly warranty returns. Adding an LSP series shunt protector to an LED design allows the unaffected lights in the string to remain illuminated by shunting current around the inoperable LED. The shunt protectors are suitable for a variety of LED lighting applications including light bulbs, lighting fixtures and backlighting systems.

The LSP series includes four models: LSP0600BJR-S, LSP0900BJR-S, LSP1300BJR-S and LSP1800BJR-S. Customers can maximise the level of protection by selecting the LSP0600BJR-S and using one device per LED. Alternatively, customers can reduce their protection costs by selecting models LSP0900BJR-S, LSP1300BJR-S or LSP1800BJR-S that are able to isolate groups of two, three or four LEDs respectively. Bourns’ new device family comes in an SMB surface mount package and is RoHS compliant.

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