PLED Open LED Protectors
PLED Series
HF
PLED Series
RoHS
Description
The open LED protector provides a switching electronic
shunt path when an LED in an LED array fails as an open
circuit. This ensures that the entire array of LEDs will
continue to function even if a single LED in the array does
not. This provides higher reliable lighting functions in
applications such as headlights, aircrafts, aircraft runway
lighting, roadside warning lights, etc. This device is
compatible with one, two and three watt LEDs that have
a nominal 3V forward characteristic. The PLED series is
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.
Agency Approvals - PENDING
Agency
Agency File Number
Features & Benefits
E133083
• Fast switching
• Automatically resets after
power cycle
Schematic Symbol
• Available in low profile,
small footprint QFN
and Standard DO214AA
packages
MT2
Control
Circuit
• Compatible with PWM
dimming speeds of up to
10 KHz
• RoHS compliant and
halogen-free
• Compatible with industrial
lighting environments
MT1
Cathode
Electrical Characteristics
Part Number
VBR
breakdown
VDRM
breakdown
IH
IS
IT@VT
VT @ IT = 1
Amp
Critical rate of
rise dV/dt
Volts
Volts
mAmps
mAmps
Amps
Volts
Volts
Marking
Min
Max
Min
Min
Max
Max
Max
Max
PLED6Q12
PL6
6
16
6
5
100
1.0
1.5
250V/µs
PLED6S
PL6
6
16
6
5
100
1.0
1.5
250V/µs
PLED9Q12
PL9
9
18
9
5
100
1.0
1.5
250V/µs
PLED9S
PL9
9
18
9
5
100
1.0
1.5
250V/µs
PLED13Q12
PL13
13
26
13
5
100
1.0
1.5
250V/µs
PLED13S
PL13
13
26
13
5
100
1.0
1.5
250V/µs
PLED18Q12
PL18
18
33
18
5
100
1.0
1.5
250V/µs
PLED18S
PL18
18
33
18
5
100
1.0
1.5
250V/µs
©2010 Littelfuse, Inc.
2
Specifications are subject to change without notice.
Revision: July 08, 2010
PLED Series
PLED Open LED Protectors
PLED Series
Thermal Considerations
Package
QFN 3x3
DO-214
Symbol
Parameter
Value
Unit
TJ
Operating Junction Temperature Range
-40 to +150
°C
TS
Storage Temperature Range
-65 to +150
°C
RθJA
Thermal Resistance: Junction to Ambient
DO-214: 90
QFN: 120
°C/W
V-I Characteristics
VBR vs. Junction Temperature
+I
P e rc e n t o f VBR C h a n g e – %
14
IT
IS
IH
-V
+V
VT
Vdrm
VBR
12
10
8
6
25 ˚C
4
2
0
-4
-6
-8
-40 -20
iH (T C = 2 5 ˚C )
R a tio o f
iH
Normalized DC Holding Current vs. Case Temperature
20
40
60
80
100 120 140 160
LED Interference Test Circuit
Q1
2.0
1.8
LED
Driver
2.0 Ω, 1/4 W
1.6
1.4
110 kΩ, 1/4 W
25 ˚C
1.2
1.0
+
0.8
-
0.6
0.4
-40 -20
0
Junction Temperature (TJ ) – ˚C
-I
Vbat
12 Vdc
Q2
2N2222
PWM
0
20
40 60
80 100 120 140 160
ON/OFF
Switch
Case Temperature (T C ) – ˚C
©2010 Littelfuse, Inc.
MT2
PLED
Control
Circuit
3
Specifications are subject to change without notice.
Revision: July 08, 2010
MT1
PLED Series
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
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)
©2010 Littelfuse, Inc.
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)
4
Specifications are subject to change without notice.
Revision: July 08, 2010
PLED Series
PLED Open LED Protectors
PLED Series
Soldering Parameters
Pb – Free assembly
Reflow Condition
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
Environmental Specifications
Physical Specifications
Terminal Material
Copper Alloy
Terminal Finish
100% Matte Tin Plated
Body Material
UL recognized epoxy meeting flammability
classification 94V-0
©2010 Littelfuse, Inc.
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
52VDC, 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
5
Specifications are subject to change without notice.
Revision: July 08, 2010
PLED Series
PLED Open LED Protectors
PLED Series
Dimensions - QFN (3x3) Package
TOP VIEW
BOTTOM VIEW
A
Dimensions
C
B
F
END VIEW
SIDE VIEW
H
K2
K1
N2
M2
M2
M1
N1
M1
1.27mm
0.050”
1.50mm
0.059”
Millimeters
Typ
Max
Min
Typ
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
1.100
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
J
E
Inches
Min
2.54mm
0.100”
Recommended solder pad layout
(Reference Only)
Dimensions - DO-214 AA Package
B
CASE TEMPERATURE
MEASURING POINT
D
A
C
K
Dimensions
H
E
F
G
0.079"
(2.0mm)
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
0.110"
(2.8mm)
0.079"
(2.0mm)
Recommended
Soldering Pad Outline
©2010 Littelfuse, Inc.
6
Specifications are subject to change without notice.
Revision: July 08, 2010
PLED Series
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)
C
A
D
N
W1
B
Reel Dimension
D0
P0
P2
T
D1
CARRIER TAPE
B0
W0
K0
P1
F
E1
E2 W
A1
COVER TAPE
Tape Dimension Items
CATHODE BAR
ON THIS SIDE
END
CARRIER TAPE
COVER TAPE
START
TRAILER
160mm MIN
LEADER
400mm MIN
Leader and Trailer Dimension of the Ttape
©2010 Littelfuse, Inc.
Inches
Millimeters
Symbols
Description
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
7
Specifications are subject to change without notice.
Revision: July 08, 2010
Minimum Maximum Minimum Maximum
PLED Series
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
DIA
(1.5)
Cover tape
12.99
(330.0)
Dimensions
are in inches
(and millimeters).
0.49
(12.4)
Direction of Feed
©2010 Littelfuse, Inc.
8
Specifications are subject to change without notice.
Revision: July 08, 2010
PLED Series
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