PLED Open LED Protectors PLED Unidirectional Series 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 MT2 • Reverse Battery/Power Protection • Automatically resets after power cycle Control Circuit •Available in low profile, small footprint QFN and Standard DO214AA packages MT1 Cathode (bar marking side) • Compatible with industrial lighting environments • Compatible with PWM frequencies up to 10 kHz • RoHS compliant and halogen-free Electrical Characteristics (All parameters are measured at T=25°C unless otherwise noted) Part Number VBR breakdown VDRM breakdown Volts Volts Marking IH IS mAmps mAmps IT@VT VT IF@VF VF IO 1 Critical rate of rise dV/dt Amps Volts Amps Volts Amps Volts Max Min Max Min Max Max Max Max Max Max Min PLED6UQ12 PL6U 6 16 6 30 50 1.0 1.2 1.0 1.0 1.0 PLED6US PL6U 6 16 6 30 50 1.0 1.2 1.0 1.0 1.0 PLED9UQ12 PL9U 9 18 9 30 50 1.0 1.2 1.0 1.0 1.0 PLED9US PL9U 9 18 9 30 50 1.0 1.2 1.0 1.0 1.0 PLED13UQ12 PL13U 13 26 13 30 50 1.0 1.2 1.0 1.0 1.0 PLED13US PL13U 13 26 13 30 50 1.0 1.2 1.0 1.0 1.0 PLED18UQ12 PL18U 18 33 18 30 50 1.0 1.2 1.0 1.0 1.0 PLED18US PL18U 18 33 18 30 50 1.0 1.2 1.0 1.0 1.0 PLED35US PL35U 35 50 35 30 50 1.0 1.2 1.0 1.0 1.0 note: 1. IO- Operation current tested @ alumium boards, ambient temp 85C ©2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 07/08/15 250V/µs PLED Open LED Protectors PLED Unidirectional Series Thermal Considerations Package DO-214AA QFN 3x3 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-214AA: 901 DO-214AA: 402 QFN: 1201 QFN: 603 °C/W 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) 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 VF -V +V VT VDRM VBR IT 12 10 8 6 25 ˚C 4 2 0 -4 -6 -8 -40 -20 iH (T C = 2 5 ˚C ) iH Normalized DC Holding Current vs. Case Temperature R a tio o f 0 20 40 80 100 120 140 160 LED Interference Test Circuit 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 Vbat 12 Vdc Q2 2N2222 PWM MT2 0.6 0.4 -40 -20 60 Junction Temperature (TJ ) – ˚C -I Unidiretional PLED Control Circuit 0 20 40 60 80 100 120 140 160 Case Temperature (T C ) – ˚C ©2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 07/08/15 ON/OFF Switch MT1 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 Channel 1: current through LEDs (318 mA) Channel 2: voltage across PLED device (4.5 V) ©2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 07/08/15 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) PLED Open LED Protectors PLED Unidirectional 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 3°C/second max TS(max) to TL - Ramp-up Rate Reflow - Temperature (TL) (Liquidus) 217°C 60 – 150 seconds - Temperature (tL) 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 Terminal Material Copper Alloy Terminal Finish 100% Matte Tin Plated Body Material UL recognized epoxy meeting flammability classification 94V-0 Part Numbering System 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 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 Part Marking System DO-214AA PLED x U x PLxU XXXXX PACKAGE TYPE TYPE PLED: LED Protector V DRM 6 Volts 9 Volts 13 Volts 18 Volts 35 Volts ©2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 07/08/15 Q12: 3.0x3.0mm QFN S: DO-214AA Cathode Bar to Indicate Diode Direction Unidirectional QFN PLxU XXXXX Cathode Bar to Indicate Diode Direction PLED Open LED Protectors PLED Unidirectional Series Packaging Package Description Packaging Quantity Industry Standard Q12 QFN 3x3 5000 EIA-481-1 S D O - 2 1 4 AA 2500 EIA-481-1 Dimensions - QFN (3x3) Package TOP VIEW BOTTOM VIEW A C J Dimensions 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 E B Inches Min F END VIEW SIDE VIEW H K2 K1 N2 M2 M2 M1 N1 1.27mm 0.050” 1.50mm 0.059” 2.54mm 0.100” Recommended solder pad layout (Reference Only) M1 Dimensions - DO-214 AA Package B CASE TEMPERATURE MEASURING POINT D A C K Dimensions H E F G 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: 07/08/15 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 PLED Open LED Protectors PLED Unidirectional Series Tape and Reel Specification - QFN (3x3) C A D N W1 B Reel Dimension D0 P0 P2 T CARRIER TAPE D1 B0 W0 K0 P1 F E1 E2 W A1 COVER TAPE Tape Dimension Items END CATHODE BAR ON THIS SIDE CARRIER TAPE COVER TAPE START TRAILER 160mm MIN LEADER 400mm MIN Leader and Trailer Dimension of the Ttape 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 Minimum Maximum Minimum Maximum DO-214AA 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 ©2015 Littelfuse, Inc. Specifications are subject to change without notice. Revision: 07/08/15