PLED18UQ12 [LITTELFUSE]
Silicon Surge Protector,;
| 型号： | PLED18UQ12 |
| 厂家： | 
LITTELFUSE |
| 描述： | Silicon Surge Protector, |
| 文件： | 总6页 (文件大小：1297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PLED Open LED Protectors
PLED Unidirectional Series
RoHS
PLED Unidirectional Series (PLEDxxUx)
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.
Agency Approvals
Agency
Agency File Number
E133083
Features & Benefits
Schematic Symbol
• Fast switching
• Compatible with industrial
lighting environments
MT2
• Reverse Battery/Power
Protection
• Compatible with PWM
frequencies up to 10 kHz
Control
Circuit
• Automatically resets after
power cycle
• RoHS compliant and
halogen-free
• Available in low profile,
small footprint QFN
and Standard DO214AA
packages
MT1
Cathode
(bar marking side)
Electrical Characteristics (All parameters are measured atT=25°C unless otherwise noted)
VBR
VDRM
Critical rate of
rise dV/dt
1
IH
IS
IT@VT
VT
IF@VF
Amps
VF
IO
breakdown breakdown
Part Number Marking
Volts
Volts
mAmps mAmps Amps
Volts
Volts
Amps
Volts
Min
Max
16
Min
6
Max
30
30
30
30
30
30
30
30
30
Max
50
50
50
50
50
50
50
50
50
Max
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
Max
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
Max
PLED6UQ12
PLED6US
PL6U
PL6U
PL9U
PL9U
6
6
16
6
PLED9UQ12
PLED9US
9
18
9
9
18
9
PLED13UQ12 PL13U
PLED13US PL13U
PLED18UQ12 PL18U
13
13
18
18
35
26
26
33
33
50
13
13
18
18
35
250V/µs
PLED18US
PL18U
PL35U
PLED35US*
note:
1. IO- Operation current tested @ alumium boards, ambient temp 85C
2. Part with “*” is not a UL Recognized Part
©2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 09/25/15
PLED Open LED Protectors
PLED Unidirectional Series
Thermal Considerations
Package
Symbol
Parameter
Value
Unit
TJ
TS
Operating Junction Temperature Range
-40 to +150
°C
QFN 3x3
DO-214AA
Storage Temperature Range
-65 to +150
°C
DO-214AA: 901
DO-214AA: 402
QFN: 1201
RθJA
Thermal Resistance: Junction to Ambient
°C/W
QFN: 603
Notes:
1) Standard FR-4 PCB with Copper Pads (Recommended Size)
2) Aluminum PCB
Thickness: 1.6mm
Grade: 1-2 W/mKThermal Conductivity
Trace thickness: 2 oz
Insulation layer thickness: 215 µm
Solder Pad Dimensions:
3) Aluminum PCB
2.0mm x 2.8mm (Recommended Size)
Thickness: 1.6mm
Grade: 1-2 W/mKThermal Conductivity
Trace thickness: 2 oz
Insulation layer thickness: 60 µm
Solder Pad Dimensions:
1.27mm x 2.54mm (Recommended Size)
V-I Characteristics
VBR vs. JunctionTemperature
+I
14
12
10
IT
IS
IH
8
6
4
VF
25 ˚C
-V
+V
2
VDRM
VT
0
VBR
-4
-6
-8
IT
0
20 40 60 80 100 120 140 160
-40 -20
-I
Junction Temperature (TJ ) – ˚C
Normalized DC Holding Current vs. CaseTemperature
LED InterferenceTest 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
V
bat
12 Vdc
Q2
2N2222
-
1.0
0.8
0.6
0.4
PWM
MT2
Control
Circuit
Unidiretional
PLED
ON/OFF
Switch
MT1
-40 -20
0
20 40 60 80 100 120 140 160
Case Temperature (TC ) – ˚C
©2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 09/25/15
PLED Open LED Protectors
PLED Unidirectional 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)
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)
©2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 09/25/15
PLED Open LED Protectors
PLED Unidirectional Series
Soldering Parameters
Reflow Condition
Pb – Free assembly
-Temperature Min (Ts(min)
)
150°C
Pre Heat -Temperature Max (Ts(max)
)
200°C
-Time (min to max) (ts)
60 – 180 secs
Average ramp up rate (LiquidusTemp
(TL) to peak
3°C/second max
TS(max) toTL - Ramp-up Rate
3°C/second max
217°C
-Temperature (TL) (Liquidus)
Reflow
-Temperature (tL)
60 – 150 seconds
260+0/-5 °C
PeakTemperature (TP)
Time within 5°C of actual peak
Temperature (tp)
30 seconds
Environmental Specifications
Ramp-down Rate
6°C/second max
8 minutes max
260°C
Time 25°C to peakTemperature (TP)
Do not exceed
MIL-STD-750: Method 1040, Condition A
80% min VDRM (VAC-peak), 150°C,
504 hours
HighTemperature
Voltage Blocking
MIL-STD-750: Method 1051
-65°C to 150°C, 15-minute dwell,
100 cycles
Temperature Cycling
Physical Specifications
BiasedTemperature & EIA/JEDEC: JESD22-A101
Humidity
52VDC, 85°C, 85%RH, 1008 hours
Terminal Material
Terminal Finish
Body Material
Copper Alloy
HighTemperature
Storage
MIL-STD-750: Method 1031
150°C, 1008 hours
100% MatteTin Plated
LowTemperature
Storage
-65°C, 1008 hours
UL recognized epoxy meeting flammability
classification 94V-0
MIL-STD-750: Method 1056
0°C to 100°C, 5-minute dwell,
10-second transfer, 10 cycles
Thermal Shock
Resistance to
Solder Heat
MIL-STD-750: Method 2031
260°C, 10 seconds
Part Numbering System
Part Marking System
DO-214AA
x
PLED x U
PLxU
XXXXX
PACKAGE TYPE
TYPE
PLED: LED Protector
Q12: 3.0x3.0mm QFN
S: DO-214AA
Cathode Bar to
Indicate Diode Direction
V
Unidirectional
DRM
6 Volts
9 Volts
13 Volts
18 Volts
35 Volts
QFN
PLxU
XXXXX
Cathode Bar to
Indicate Diode Direction
©2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 09/25/15
PLED Open LED Protectors
PLED Unidirectional Series
Packaging
Package
Q12
Description
QFN 3x3
Packaging Quantity
Industry Standard
EIA-481-1
5000
2500
S
DO-214AA
EIA-481-1
Dimensions - QFN (3x3) Package
TOP VIEW
BOTTOM VIEW
Inches
Typ
Millimeters
A
C
J
Dimensions
Min
Max
Min
Typ
Max
E
F
A
B
0.114
0.114
0.075
0.011
0.076
0.035
0.000
0.004
0.004
0.056
0.038
0.096
0.082
0.118
0.122
2.900
3.000
3.100
B
0.118
0.079
0.015
0.080
0.039
0.004
0.008
0.008
0.060
0.042
0.100
0.086
0.122
0.083
0.019
0.084
0.043
0.008
0.012
0.012
0.064
0.046
0.104
0.090
2.900
1.900
0.285
1.930
0.900
0.000
0.100
0.100
1.143
0.970
2.440
2.080
3.000
2.000
0.385
2.030
1.000
0.100
0.200
0.200
1.530
1.070
2.540
2.180
3.100
2.100
0.485
2.130
1.100
0.200
0.300
0.300
1.630
1.170
2.640
2.280
C
E
END VIEW
SIDE VIEW
H
F
K1
K2
N2
N1
M2
M1
M2
M1
H
J
1.27mm
0.050”
K1
K2
M1
M2
N1
N2
1.50mm
0.059”
2.54mm
0.100”
Recommended solder pad layout
(Reference Only)
Dimensions - DO-214 AA Package
B
CASE TEMPERATURE
MEASURING POINT
Inches
Millimeters
D
Dimensions
Min
Max
Min
Max
A
B
C
D
E
F
0.130
0.201
0.077
0.159
0.030
0.075
0.002
0.077
0.006
0.156
0.220
0.087
0.181
0.063
0.096
0.008
0.104
0.016
3.30
5.10
1.95
4.05
0.75
1.90
0.05
1.95
0.15
3.95
5.60
2.20
4.60
1.60
2.45
0.20
2.65
0.41
A
C
K
H
F
E
G
G
H
K
0.079"
(2.0mm)
0.110"
(2.8mm)
0.079"
(2.0mm)
Recommended solder pad layout
(Reference Only)
©2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 09/25/15
PLED Open LED Protectors
PLED Unidirectional Series
Tape and Reel Specification - QFN (3x3)
Inches
Millimeters
Symbols
Description
C
Minimum Maximum Minimum Maximum
A
D
N
A
B
Reel Diameter
Drive Spoke Width
N/A
12.992
N/A
N/A
1.50
330.0
N/A
W1
B
0.059
0.504
0.795
1.969
0.488
0.126
0.126
0.059
0.059
0.065
0.400
0.215
0.039
0.153
0.311
0.077
0.010
0.453
0.358
Reel Dimension
C
Arbor Hole Diameter
Drive Spoke Diameter
Hub Diameter
0.531
N/A
12.80
20.20
50.00
12.40
3.20
3.20
1.50
13.50
N/A
D
D
0
E
1
2
P
P
0
2
CARRIER TAPE
N
N/A
N/A
T
D
1
W1
A0
B0
D0
D1
E1
E2
F
Reel Inner Width at Hub
Pocket Width at bottom
Pocket Length at bottom
Feed Hole Diameter
Pocket Hole Diameter
Feed hole Position 1
Feed hole Position 2
Feed hole center-Pocket hole
Pocket Depth
0.567
0.134
0.134
0.063
N/A
14.40
3.40
3.40
1.60
B
0
F
W
E
W0
K
0
P
1
A1
COVER TAPE
Tape Dimension Items
1.50
N/A
CATHODE BAR
ON THIS SIDE
COVER TAPE
CARRIER TAPE
END
0.073
0.408
0.219
0.051
0.161
0.319
0.081
0.014
0.484
0.366
1.65
1.85
START
10.15
5.45
1.00
10.35
5.55
1.30
TRAILER
160mm MIN
LEADER
400mm MIN
K0
P0
P1
P2
T
Leader and Trailer Dimension of the Ttape
Feed hole Pitch
3.90
7.90
4.10
8.10
2.06
0.35
12.30
9.30
Component Spacing
Feed hole center-Pocket hole
Carrier Tape Thickness
Embossed Carrier Tape Width
Cover Tape Width
1.90
0.25
11.50
9.10
W
W0
DO-214AA Embossed Carrier Reel Pack (RP)
Meets all EIA-481-1 Standards
0.157
(4.0)
Cathode bar on this side
0.472
(12.0)
0.36
(9.2)
0.315
(8.0)
0.059
DIA
Cover tape
(1.5)
12.99
(330.0)
0.512 (13.0) Arbor
Hole Dia.
Dimensions
are in inches
(and millimeters).
0.49
(12.4)
Direction of Feed
©2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revision: 09/25/15
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