Littelfuse PLEDxUx User Manual

PLED Open LED Protectors

2

PLED Unidirectional Series

PLED Unidirectional Series (PLEDxUx)

Description

PLED Unidirectional Series (PLEDxUx 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.

Agency Approvals

Agency Agency File Number

E133083

Features & Benefits

• Fast switching

• Reverse Battery/Power

Protection

Schematic Symbol

• Automatically resets after

power cycle

MT

• Available in low prole,

small footprint QFN

Control
Circuit

and Standard DO214AA
packages

• Compatible with industrial

MT1
Cathode
(bar marking side)

lighting environments

Electrical Characteristics (All parameters are measured at T=25°C unless otherwise noted)

Part Number Marking

PLED6UQ12 PL6U

PLED6US PL6U

PLED9UQ12 PL9U

PLED9US PL9U

PLED13UQ12 PL13U

PLED13US PL13U

PLED18UQ12 PL18U

PLED18US PL18U

V

BR

breakdown

Volts Volts mAmps mAmps Amps Volts Amps Volts Volts

Min Max Min Max Max Max Max Max Max Max

6 16 6

9 18 9

13 26 13

18 33 18

V

DRM

breakdown

I

H

30 50 1. 0 1. 2 1. 0 1. 0 250V/µs

I

IT@V

S

T

VT @ IT =

1 Amp

• Compatible with PWM

frequencies up to 10 kHz

• RoHS compliant and

halogen-free

F

VF @ IF =

1 Amp

IF@V

Critical rate of

rise dV/dt

©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.

1

Revision: November 12, 2013

PLED Unidirectional Series

PLED Open LED Protectors

QFN 3x3

=)

Q1

C%

PLED Unidirectional Series

Thermal Considerations

Package Symbol Parameter Value Unit

T

DO-214AA

Notes:

1) Standard FR-4 PCB with Copper Pads (Recommended Size)

2) Aluminum PCB
Thickness: 1.6mm
Grade: 1-2 W/mK Thermal Conductivity
Trace thickness: 2 oz
Insulation layer thickness: 215 µm
Solder Pad Dimensions: 2.0mm x 2.8mm (Recommended Size)

3) Aluminum PCB
Thickness: 1.6mm
Grade: 1-2 W/mK Thermal Conductivity
Trace thickness: 2 oz
Insulation layer thickness: 60 µm
Solder Pad Dimensions: 1.27mm x 2.54mm (Recommended Size)

J

T

S

R

θ

JA

Thermal Resistance: Junction to Ambient

Operating Junction Temperature Range -40 to +150 °C

Storage Temperature Range -65 to +150 °C

DO-214AA: 90
DO-214AA: 40
QFN: 120

QFN: 60

1

2

°C/W

1

3

V-I Characteristics

Normalized DC Holding Current vs. Case Temperature LED Interference Test Circuit

H

i

fo oitaR

VBR vs. Junction Temperature

+I

14

12

I

T

I

S

I

H

V

-V

F

+V

V

V

DRM

T

V

BR

I

T

-I

2.0

1.8

C˚ 52

1.6

1.4

C

T(

1.2

H

i

1.0

25 ˚C

0.8

0.6

0.4

-40 -20

0 20 40 60 80 100 120 140 160

– egnah

10

8

6

BR

4

2

0

reP fo tnecV

-4

-6

-8

-40 -20

2.0 Ω, 1/4 W

110 kΩ, 1/4 W

+

V

bat

12 Vdc

-

PWM

25 ˚C

0 20 40 60 80 100 120 140 160

Junction Temperature (TJ) – ˚C

LED
Driver

Q2
2N2222

MT2

Control
Circuit

ON/OFF
Switch

MT1

Unidiretional
PLED

Case Temperature (TC) – ˚C

©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.

2

Revision: November 12, 2013

PLED Unidirectional Series

PLED Open LED Protectors

PLED Unidirectional Series

6 LEDs in Series 50% Duty Cycle 10kHz

Note: These two graphs show the current magnitude through the LED string with and without the PLED included. There is no noticeable effect on the LED current magnitude when the

PLED is included in the circuit as compared to the LED current magnitude when the PLED is not in the circuit. (The conversion factor for the test measurement in the graphs above is
10mA/mV for the Pearson coil measurement, therefore, the current magnitude in the first figure is 10mA*8.9 = 89mA, while the second figure is 91mA.)

5 LEDs and 1

PLED

in Series 50% Duty Cycle 10kHz

PLED in the Off-State 10kHz PLED device zeners and then turns fully on 10kHz

Channel 1: current through LEDs (318 mA)
Channel 2: voltage across PLED device (4.5 V)

©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.

Channel 1: current through LEDs (346 mA) and PLED device once it is fully turned on 2.5 μsec later
Channel 2: voltage across PLED device (21.3 V before PLED crowbars with 2 V drop)

3

Revision: November 12, 2013

PLED Unidirectional Series

PLED Open LED Protectors

PLxU

XXXXX

Cathode Bar to
Indicate Diode Direction

DO-214AA

PLxU

XXXXX

QFN

Cathode Bar to
Indicate Diode Direction

PLED

x

TYPE

PLED: LED Protector

V

6 Volts
9 Volts
13 Volts
18 Volts

PACKAGE TYPE

Q12: 3.0x3.0mm QFN
S: DO-214AA

DRM

U

Unidirectional

x

PLED Unidirectional Series

Soldering Parameters

Reflow Condition Pb – Free assembly

Pre Heat

- Temperature Min (T

- Temperature Max (T

) 150°C

s(min)

) 200°C

s(max)

- Time (min to max) (ts) 60 – 180 secs

Average ramp up rate (Liquidus Temp
(TL) to peak

T

to TL - Ramp-up Rate 3°C/second max

S(max)

Reflow

- Temperature (TL) (Liquidus) 217°C

- Temperature (tL) 60 – 150 seconds

Peak Temperature (TP) 260

Time within 5°C of actual peak
Temperature (tp)

3°C/second max

+0/-5

°C

30 seconds

Ramp-down Rate 6°C/second max

Time 25°C to peak Temperature (TP) 8 minutes max

Do not exceed 260°C

Physical Specifications

Terminal Material Copper Alloy

Terminal Finish 100% Matte Tin Plated

Body Material

UL recognized epoxy meeting flammability
classification 94V-0

Environmental Specifications

High Temperature
Voltage Blocking

Temperature Cycling

Biased Temperature &
Humidity

High Temperature
Storage

Low Temperature
Storage

Thermal Shock

Resistance to
Solder Heat

MIL-STD-750: Method 1040, Condition A

80% min V
504 hours

MIL-STD-750: Method 1051

-65°C to 150°C, 15-minute dwell,
100 cycles

EIA/JEDEC: JESD22-A101
52VDC, 85°C, 85%RH, 1008 hours

MIL-STD-750: Method 1031

150°C, 1008 hours

-65°C, 1008 hours

MIL-STD-750: Method 1056

0°C to 100°C, 5-minute dwell,
10-second transfer, 10 cycles

MIL-STD-750: Method 2031

260°C, 10 seconds

(VAC-peak), 150°C,

DRM

Part Numbering System

©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.

Part Marking System

4

Revision: November 12, 2013

PLED Unidirectional Series

2.54mm

0.100”

1.50mm

0.059”

1.27mm

0.050”

Recommended solder pad layout

(Reference Only)

H

K1

N2

N1

END VIEW

SIDE VIEW

M2 M2

M1

M1

K2

F

E

C

J

B

A

TOP VIEW

BOTTOM VIEW

Packaging

Package Description Packaging Quantity Industry Standard

Q12

S

Dimensions - QFN (3x3) Package

PLED Open LED Protectors

PLED Unidirectional Series

QFN 3x3 5000 EIA-481-1

DO-214AA 2500 EIA-481-1

Dimensions - DO-214 AA Package

Dimensions

Inches Millimeters

Min Typ Max Min Ty p Max

A 0.114 0.118 0.122 2.900 3.000 3.100

B 0.114 0.118 0.122 2.900 3.000 3.100

C 0.075 0.079 0.083 1.900 2.000 2.100

E 0.011 0.015 0.019 0.285 0.385 0.485

F 0.076 0.080 0.084 1.930 2.030 2.130

H 0.035 0.039 0.043 0.900 1.000 1. 10 0

J 0.000 0.004 0.008 0.000 0.100 0.200

K1 0.004 0.008 0.012 0.100 0.200 0.300

K2 0.004 0.008 0.012 0.100 0.200 0.300

M1 0.056 0.060 0.064 1.143 1.530 1.630

M2 0.038 0.042 0.046 0.970 1.070 1.170

N1 0.096 0.100 0.104 2.440 2.540 2.640

N2 0.082 0.086 0.090 2.080 2.180 2.280

B

D

E

Recommended solder pad layout

©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.

0.079"

(2.0mm)

(Reference Only)

(2.0mm)

0.110"
(2.8mm)

0.079"

CASE TEMPERATURE
MEASURING POINT

C

HGK

Dimensions

A

A 0.130 0.156 3.30 3.95

B 0.201 0.220 5.10 5.60

Inches Millimeters

Min Max Min Max

C 0.077 0.087 1.95 2.20

D 0.159 0.181 4.05 4.60

F

E 0.030 0.063 0.75 1.60

F 0.075 0.096 1.90 2.45

G 0.002 0.008 0.05 0.20

H 0.077 0.104 1.95 2.65

K 0.006 0.016 0.15 0.41

5

Revision: November 12, 2013

PLED Unidirectional Series

PLED Open LED Protectors

A

B

D

C

W1

N

Reel Dimension

K

0

P

0

P

1

W

D

0

A

1

D

1

P

2

E

2

F

W

0

CARRIER TAPE

COVER TAPE

T

E

1

B

0

Tape Dimension Items

TRAILER

160mm MIN

LEADER

400mm MI N

START

END

CARRIER TAPE

COVER TAPE

Leader and Trailer Dimension of the Ttape

CATHODE BAR
ON THIS SIDE

PLED Unidirectional Series

Tape and Reel Specification - QFN (3x3)

Symbols Description

Inches Millimeters

Minimum Maximum Minimum Maximum

A Reel Diameter N/A 12.992 N/A 330.0

B Drive Spoke Width 0.059 N/A 1.50 N/A

C Arbor Hole Diameter 0.504 0.531 12.80 13.50

D Drive Spoke Diameter 0.795 N/A 20.20 N/A

N Hub Diameter 1.969 N/A 50.00 N/A

W1 Reel Inner Width at Hub 0.488 0.567 12.40 14.40

A0 Pocket Width at bottom 0.126 0.134 3.20 3.40

B0 Pocket Length at bottom 0.126 0.134 3.20 3.40

D0 Feed Hole Diameter 0.059 0.063 1.50 1.60

D1 Pocket Hole Diameter 0.059 N/A 1.50 N/A

E1 Feed hole Position 1 0.065 0.073 1.65 1.85

E2 Feed hole Position 2 0.400 0.408 10.15 10.35

F Feed hole center-Pocket hole 0.215 0.219 5.45 5.55

K0 Pocket Depth 0.039 0.051 1. 00 1.30

P0 Feed hole Pitch 0.153 0.161 3.90 4.10

P1 Component Spacing 0.311 0.319 7.90 8.10

P2 Feed hole center-Pocket hole 0.077 0.081 1.90 2.06

T Carrier Tape Thickness 0. 010 0.014 0.25 0.35

W Embossed Carrier Tape Width 0.453 0.484 11.50 12.30

W0 Cover Tape Width 0.358 0.366 9.10 9.30

DO-214AA Embossed Carrier Reel Pack (RP)

Meets all EIA-481-1 Standards

0.157
(4.0)

©2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com for current information.

0.472

(12.0)

0.36
(9.2)

0.512 (13.0) Arbor
Hole Dia.

0.49

(12.4)

0.315
(8.0)

Cathode bar on this side

12.99

(330.0)

6

Revision: November 12, 2013

0.059
DIA

(1.5)

Direction of Feed

Dimensions
are in inches
(and millimeters).

Cover tape

PLED Unidirectional Series