PLED Open LED Protectors

Revision: 09/25/15

©2015 Littelfuse, Inc.

Specifications are subject to change without notice.

PLED Unidirectional Series

Description

PLED Unidirectional Series (PLEDxxUx Series) open LED

protectors provide a switching electronic shunt path around

a single LED that fails as an open circuit. This ensures

the remaining string of LEDs will continue to function

even though a single LED in the string has failed open.

It also provides reverse battery or reverse power polarity

protection.

PLED Unidirectional Series devices were designed to

enable higher reliability in outdoor LED lighting applications

such as street lighting, outdoor signage, aircraft runway

lighting, roadside warning lights and other applications.

Compatible with one, two and three watt LEDs that have

a nominal 3V forward characteristic, PLED Unidirectional

Series devices are available in two surface mount packages,

the DO-214AA and the Quad Flat Pak No-lead (QFN). The

QFN’s low profile, chip scale package (CSP) is ideal for

dense board applications.

Part Number Marking

V

BR

breakdown

V

DRM

breakdown

I

H

I

S

I

V

T

I

V

F

I

O

1

Critical rate of

rise dV/dt

Volts

Volts

mAmps mAmps Amps

Volts

Amps

Volts

Amps

Volts

Min

Max

Min

Max

Max

Max

Max

Max

Max

Min

Max

PLED6UQ12

PL6U

6

16

6

30

50

1.0

1.2

1.0

1.0

1.0

250V/µs

PLED6US

PL6U

6

16

6

30

50

1.0

1.2

1.0

1.0

1.0

PLED9UQ12

PL9U

9

18

9

30

50

1.0

1.2

1.0

1.0

1.0

PLED9US

PL9U

9

18

9

30

50

1.0

1.2

1.0

1.0

1.0

PLED13UQ12

PL13U

13

26

13

30

50

1.0

1.2

1.0

1.0

1.0

PLED13US

PL13U

13

26

13

30

50

1.0

1.2

1.0

1.0

1.0

PLED18UQ12

PL18U

18

33

18

30

50

1.0

1.2

1.0

1.0

1.0

PLED18US

PL18U

18

33

18

30

50

1.0

1.2

1.0

1.0

1.0

PLED35US*

PL35U

35

50

35

30

50

1.0

1.2

1.0

1.0

1.0

Features & Benefits

• Fast switching

• Reverse Battery/Power

Protection

• Automatically resets after

power cycle

• Available in low profile,

small footprint QFN

and Standard DO214AA

packages

• Compatible with industrial

lighting environments

• Compatible with PWM

frequencies up to 10 kHz

• RoHS compliant and

halogen-free

Agency Approvals

Agency

Agency File Number

E133083

Schematic Symbol

Control

Circuit

MT

2

MT1

Cathode

(bar marking side)

PLED Unidirectional Series (PLEDxxUx)

note:

1. I

2. Part with “*” is not a UL Recognized Part

RoHS