PLED18UQ12 - PLEDxUx Series

Series: PLEDxUx
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The PLEDxUx Unidirectional Series Open LED Protector provides a switching electronic shunt path when one LED in a string fails as an open circuit. PLED devices are connected in parallel with each LED in a series string. If one LED fails as an open circuit, the PLED connected to it turns on and carries the current that would have gone through the failed LED, so the remainder of the string continues to function. LEDs cannot withstand voltages of reverse polarity; the PLEDxUX Series provides reverse battery/power polarity protection for greater LED reliability.

Features:
  • Electronic shunt/bypass for open LEDs
  • Reverse battery/power protection
  • Fast switching
  • Small footprint, DO-214AA or QFN package
  • Automatically resets after power cycle
  • RoHS compliant

Benefits:
  • Enables LED strings to continue to function even if one LED fails as an open circuit
  • Prevents accidental reversal of battery/power polarity because LEDs cannot survive reverse polarity voltages
  • Capable of PWM frequencies up to 10kHz
  • Provides layout flexibility; maximum heat dissipation makes it ideal for dense board applications 
  • Low maintenance, high reliability operation
  • Environmentally friendly product

Applications:
  • Street, subway, runway, and tunnel lights
  • Aircraft/runway lights
  • Outdoor signage
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Property (Mouseover for details) Value
Holding Current (mA) 30
On-State Current (IT) (mA) 1
Breakdown Voltage (VBR@IT) (V) 33
Breakdown Voltage (MIN VBR@IT ) (V) 18
Repetitive Peak Off-State Voltage (VDRM) (V) 18
On-State Voltage (VT) (V) 1.2
Partner ECAD Models PLED18UQ12
Package 3.0x3.0mm QFN

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
PLED18UQ12 LED PROTECTOR Uni 18V QFN 3X3 2L RoHS RoHS No 07/29/2013 PbFree No 06/16/2015 Yes
07/29/2013
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