PLED Open LED Protectors
PLED Series
PLED Series
RoHS
Description
PLED Series open LED protectors provide a switching
electronic shunt path when an LED in an LED string fails as
an open circuit. This ensures that the remaining string of
LEDs will continue to function if a single LED does not.
PLED 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 applictions.
Compatible with one, two and three watt LEDs that have
a nominal 3V forward characteristic, PLED Series devices
are available in two surface mount packages, the DO-214
and the Quad Flat Pak No-lead (QFN). The QFN’s low
profile, chip scale package (CSP) is ideal for dense board
applications.
Features & Benefits
Agency Approvals
Agency
• Fast switching
Agency File Number
• Automatically resets after
power cycle
E133083
• Available in low profile,
small footprint QFN
and Standard DO214AA
packages
Schematic Symbol
• Compatible with industrial
lighting environments
• Compatible with PWM
frequencies up to 30 kHz
• RoHS-Compliant and
Halogen-Free
MT2
Control
Circuit
MT1
Cathode
Electrical Characteristics (All parameters are measured at T=25°C unless otherwise noted)
VBR Breakdown
Part Number
Marking
PLED6Q12
PL6
PLED6S
PL6
PLED9Q12
PL9
PLED9S
PL9
PLED13Q12
PL13
PLED13S
PL13
PLED18Q12
PL18
PLED18S
PL18
Volts
VDRM
breakdown
Volts
IH
IS
IT@VT
mAmps
mAmps
Min
Max
5
100
Min
Max
Min
6
16
6
9
18
9
13
26
13
18
33
18
Amps
VT @ IT = 1
Amp
Volts
Critical rate of
rise dV/dt
Volts
Max
Max
Max
1.0
1.2
250V/µs
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
PLED Open LED Protectors
PLED Series
Thermal Considerations
Package
QFN 3x3
Symbol
Parameter
Value
Unit
TJ
Operating Junction Temperature Range
-40 to +150
°C
TS
Storage Temperature Range
-65 to +150
°C
DO-214
RƟJA
DO-214:
DO-214:
QFN:
QFN:
Thermal Resistance: Junction to Ambient
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)
901
402
1201
603
°C/W
3) Aluminum PCB
Thickness: 1.6mm
Grade: 1-2 W/mK Thermal Conductivity
Trace thickness: 2 oz
nsulation layer thickness: 60 um
Solder Pad Dimensions: 1.27mm x 2.54mm (Recommended Size)
V-I Characteristics
VBR vs. Junction Temperature
+I
IT
IS
IH
-V
+V
VT
VDRM
VBR
P e rc e n t o f VBR C h a n g e – %
14
12
10
8
6
25 ˚C
4
2
0
-4
-6
-8
-40 -20
0
20
40
60
80
100 120 140 160
Junction Temperature (TJ ) – ˚C
-I
Normalized DC Holding Current vs. Case Temperature
LED Interference Test Circuit
iH (T C = 2 5 ˚C )
R a tio o f
iH
Q1
2.0
1.8
LED
Driver
2.0 Ω, 1/4 W
1.6
110 kΩ, 1/4 W
1.4
25 ˚C
1.2
1.0
+
0.8
-
0.6
0.4
-40 -20
Vbat
12 Vdc
Q2
2N2222
PWM
0
20
40 60
MT2
80 100 120 140 160
Case Temperature (T C ) – ˚C
PLED
Control
Circuit
ON/OFF
Switch
MT1
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
PLED Open LED Protectors
PLED Series
6 LEDs in Series 50% Duty Cycle 10kHz
5 LEDs and 1 PLED 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.)
PLED in the Off-State 10kHz
Channel 1: current through LEDs (318 mA)
Channel 2: voltage across PLED device (4.5 V)
PLED device zeners and then turns fully on 10kHz
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)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
PLED Open LED Protectors
PLED Series
Soldering Parameters
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
Ramp-up
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
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
+0/-5
°C
Physical Specifications
Terminal Material
Copper Alloy
Terminal Finish
100% Matte Tin Plated
UL Recognized epoxy meeting flammability
classification 94V-0
Body Material
tp
TP
TL
Temperature (T)
Reflow Condition
Critical Zone
TL to TP
tL
Ts(max)
Ts(min)
Ramp-down
ts
Preheat
25˚C
t 25˚C to Peak
Time (t)
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
High Temperature Storage
Low Temperature Storage
EIA/JEDEC: JESD22-A101
52VDC, 85°C, 85%RH, 1008 hours
MIL-STD-750: Method 1031
150°C, 1008 hours
-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
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
PLED Open LED Protectors
PLED Series
Dimensions - QFN (3x3) Package
TOP VIEW
BOTTOM VIEW
A
C
J
A
E
B
F
END VIEW
SIDE VIEW
H
K2
K1
N2
M2
M2
M1
N1
Dimensions
M1
Inches
Millimeters
Min
Typ
Max
Min
Typ
Max
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
1.100
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
0.585mm
1.93mm
2.15mm
Recommended solder pad layout
(Reference Only)
Dimensions - DO-214 AA Package
B
Dimensions
CASE TEMPERATURE
MEASURING POINT
D
A
C
K
E
H
F
Inches
Millimeters
Min
Max
Min
A
0.130
0.156
3.30
Max
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
G
0.079"
(2.0mm )
0.110"
(2.8mm)
0.079"
(2.0mm )
Recommended solder pad layout
(Reference Only)
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
PLED Open LED Protectors
PLED Series
Part Numbering System
Part Marking System
DO-214
PLED X Q12
PLX
XXXXX
Package Type
Type
Q12: 3.0x3.0mm QFN
S: DO-214
PLED: LED Protector
V DRM
Cathode Bar to
Indicate Diode Direction
6 Volts
9 Volts
13 Volts
18 Volts
QFN
PLX
XXXXX
Cathode Bar to
Indicate Diode Direction
Packaging
Package
Description
Packaging Quantity
Industry Standard
Q12
QFN 3x3
5000
EIA-481-1
S
DO-214
2500
EIA-481-1
Tape and Reel Specification - QFN (3x3)
Symbols
C
A
D
N
W1
B
Reel Dimension
D0
P0
P2
T
D1
B0
W0
K0
P1
E1
CARRIER TAPE
F
A1
COVER TAPE
END
COVER TAPE
CARRIER TAPE
START
TRAILER
160mm MIN
LEADER
400mm MIN
Millimeters
Min
Max
Min
Max
N/A
12.992
N/A
330.0
A
Reel Diameter
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
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
F
Tape Dimension Items
CATHODE BAR
ON THIS SIDE
E2 W
Inches
Description
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
0.366
9.10
9.30
0.358
Leader and Trailer Dimension of the Ttape
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
PLED Open LED Protectors
PLED Series
DO-214 Embossed Carrier Reel Pack (RP)
Meets all EIA-481-1 Standards
0.157
(4.0)
0.472
(12.0)
Cathode bar on this side
0.36
(9.2)
0.315
(8.0)
0.512 (13.0) Arbor
Hole Dia .
0.059 DI A
(1.5)
Cover tape
12.99
(330.0)
Dimensions
are in inches
(and millimeters).
0.4 9
(12.4)
Direction of Feed
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: www.littelfuse.com/disclaimer-electronics.
© 2020 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 04/02/20
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