PLED Open LED Protectors
Revision: 03/06/18
©2018 Littelfuse, Inc.
Specifications are subject to change without notice.
High power PLED
Description
PLEDxUSWxA open LED protectors provide a switching
electronic shunt path when an LED in an electronic
switching fails as an open circuit. This ensures that the
remaining string of LEDs will continue to function if a single
LED does not.
The devices is designed to enable higher reliability in indoor
LED lighting applications such as advertisement lighting
and other applications. Additionally, it is molded from white
material to make them less visible in the LED fixture and
the white molding also reflects more light to improve overall
light engine efficiency.
This series is compatible with one, two and three watt
LEDs that have a nominal 3V forward characteristic and
is available in an SMB, PLEDxUSWxA is available in SMB
surface mount package. The DO-214AA (SMB) low profile
package is ideal for dense board applications.
Electrical Characteristics (All parameters are measured at T=25°C unless otherwise noted)
Part Number Marking
VBR
breakdown
VDRM
breakdown IHISIT@VT
VT @ IT = 1
Amp IO
1Critical rate of
rise dV/dt
Volts Volts mAmps mAmps Amps Volts Amps Volts
Min Max Min Min Max Max Max Max Max
PLED6USW2A PL62A 616 6 5 100 1. 0 1. 2 2250V/µs
PLED6USW3A PL63A 616 6 5 100 1. 0 1. 2 3250V/µs
PLED9USW3A PL93A 918 9 5 100 1. 0 1. 2 3250V/µs
Features & Benefits
• Ideal for protecting high
brightness LED with
high operating current at
specified condition.
• White compound for better
optical appearances
• Fast switching
• Reverse Battery/Power
Protection
• Low profile, small foot
print standard DO-214AA
package
• Compatible with industrial
lighting environments
• IEC-61000-4-2 ESD 30kV
(Air), 30kV (Contact)
• ESD protection of data
lines in accordance with
IEC 61000-4-2 (IEC801-2)
• Compatible with PWM
frequencies up to 30 kHz
• RoHS compliant and
halogen-free
• Pb-free E3 means 2nd level
interconnect is Pb-free
and the terminal finish
material is tin(Sn) (IPC/
JEDEC J-STD-609A.01)
Agency Approvals
Agency Agency File Number
E133083
Schematic Symbol
RoHS
PLEDxUSWxA Series - Unidirectional, White Body
Notes:
1. I O- Operation current tested @ aluminum boards, ambient temp 85C
Control
Circuit
MT2
MT1
Cathode
(bar marking side)
e3
PLED Open LED Protectors
Revision: 03/06/18
©2018 Littelfuse, Inc.
Specifications are subject to change without notice.
High power PLED
Package Symbol Parameter Value Unit
TJOperating Junction Temperature Range -40 to +150 °C
TSStorage Temperature Range -65 to +150 °C
RθJA Thermal Resistance: Junction to Ambient DO-214AA: 901
DO-214AA: 402°C/W
Thermal Considerations
V-I Characteristics
0.4
-40 -20
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
Case Temperature (T
C
) – ˚C
fo oitaR
i
H
i
H
T(
C
C˚ 52 =)
25 ˚C
0 20 40 60 80 100 120 140 160
0
5
10
15
20
25
0.51.0 1.52.0 2.53.0 3.5
Precent of Change
I – A
T
– %
V
T
VT vs. IT
Normalized DC Holding Current vs. Case Temperature
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 um
Solder Pad Dimensions: 2.0mm x 2.8mm (Recommended Size)
DO-214AA in White
IH
IT
IS
VDRM
VT
+V
-V
+I
-I
VBR
IT
VF
-8
-40 -20
-6
-4
0
2
4
6
8
10
12
14
Junction Temperature (T
J
) – ˚C
reP fo tnecV
BR
– egnahC%
25 ˚C
0 20 40 60 80 100 120 140 160
VBR vs. Junction Temperature
PLED Open LED Protectors
Revision: 03/06/18
©2018 Littelfuse, Inc.
Specifications are subject to change without notice.
High power PLED
6 LEDs in Series 50% Duty Cycle 10kHz 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)
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)
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.)
LED Interference Test Circuit
ON/OFF
Switch
PWM
LED
Driver
Vbat
12 Vdc
+
-
2.0 Ω, 1/4 W
110 kΩ, 1/4 W
Q2
2N2222
Q1
Unidiretional
PLED
Control
Circuit
MT2
MT1
PLED Open LED Protectors
Revision: 03/06/18
©2018 Littelfuse, Inc.
Specifications are subject to change without notice.
High power PLED
Soldering Parameters
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)60 – 180 secs
Average ramp up rate (Liquidus Temp
(TL) to peak 3°C/second max
TS(max) to TL - Ramp-up Rate 3°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Temperature (tL)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)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
Environmental Specifications
High Temperature
Voltage Blocking
MIL-STD-750: Method 1040, Condition A
80% min VDRM (VAC-peak), 150°C,
504 hours
Temperature Cycling
MIL-STD-750: Method 1051
-65°C to 150°C, 15-minute dwell,
100 cycles
Biased Temperature &
Humidity
EIA/JEDEC: JESD22-A101
80%VDRM, 85°C, 85%RH, 1008 hours
High Temperature
Storage
MIL-STD-750: Method 1031
150°C, 1008 hours
Low Temperature
Storage -65°C, 1008 hours
Thermal Shock
MIL-STD-750: Method 1056
0°C to 100°C, 5-minute dwell,
10-second transfer, 10 cycles
Resistance to
Solder Heat
MIL-STD-750: Method 2031
260°C, 10 seconds
Terminal Material Copper Alloy
Terminal Finish 100% Matte Tin Plated
Body Material UL recognized compound meeting
flammability classification V-0
Packaging
Package Description Packaging Quantity Industry Standard
SDO-214AA 2500 EIA-481-1
Part Marking System
PLxU
XXXXX
Cathode Bar
DO-214AA
PLxU
XXXXX
QFN
Cathode Bar to
Indicate Diode Direction
Part Numbering System
PLED 6
TYPE
PLED: LED Protector
V
6: 6 Volts
PACKAGE TYPE
S: DO-214AA
DRM
S
White molded
W
Operating Current
2A
U
Unidirectional
2: 2 Amp
PLxxA
PLED Open LED Protectors
Revision: 03/06/18
©2018 Littelfuse, Inc.
Specifications are subject to change without notice.
High power PLED
Dimensions - DO-214 AA Package
B
D
A
C
H
G
KF
CASE TEMPERATURE
MEASURING POINT
0.079"
(2.0mm)
0.079"
(2.0mm)
0.110"
(2.8mm)
E
Recommended solder pad layout
(Reference Only)
Dimensions Inches Millimeters
Min Max Min Max
A 0.130 0.156 3.30 3.95
B 0.201 0.220 5.10 5.60
C 0.077 0.087 1.95 2.20
D 0.159 0.181 4.05 4.60
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
Meets all EIA-481-1 Standards
0.472
(12.0) 0.36
(9.2)
0.315
(8.0)
0.157
(4.0)
0.49
(12.4)
0.512 (13.0) Arbor
Hole Dia.
12.99
(330.0)
Dimensions
are in inches
(and millimeters).
Direction of Feed
0.059 DIA
(1.5)
Cover tape
Cathode bar on this side
DO-214AA Embossed Carrier Reel Pack (RP)
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the
suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used
in, all applications. Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
