LZ7-04M2PD-0000

PRELIMINARY LuxiGen™ Multi-Color Emitter Series LZ7 Plus Flat Lens Emitter RGB – PC Amber – Cyan – PC Lime LZ7-04M2PD Key Features  6-color surface mount ceramic LED package with integrated flat glass lens  60W max power dissipation in a small 7.0mm x 7.0mm emitter footprint  Red, Green, Blue, PC Amber, Cyan and PC Lime enables richer and wider color combination for more sophisticated color mixing  Compact 3.4mm x 3.4mm Light Emitting Surface (LES) and low profile package maximize coupling efficiency into secondary optics  Thermal resistance of 0.8 °C/W  Electrically neutral thermal path  JEDEC Level 1 for Moisture Sensitivity Level  Lead (Pb) free and RoHS compliant Typical Applications  Stage and Studio Lighting  Effect Lighting  Accent Lighting  Display Lighting  Architectural Lighting Description The LZ7 flat lens emitter contains 6 different colors LED dies closely packed in a low thermal resistance package with integrated glass window. The addition of PC Amber, Cyan and PC Lime to the traditional RGB colors enables richer and wider color combination for more sophisticated color mixing. The compact 3.4mm x 3.4mm LES, low profile package and glass window, allows maximum coupling efficiency into the zoom optics, mixing rods, light pipes and other secondary optics. The high quality materials used in the package are chosen to maximize light output and minimize stresses which results in monumental reliability and lumen maintenance. Notes This product emits Blue light, which can be hazardous depending on total system configuration (including, but not limited to optics, drive current and temperature). Do not stare directly into the beam and observe safety precaution given in IEC 62471 when operating this product. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Part number options Base part number Part number Description LZ7-04M2PD-0000 LZ7 Plus RGB-PC Amber-Cyan-PC Lime flat lens emitter LZ7-A4M2PD-0000 LZ7 Plus RGB-PC Amber-Cyan-PC Lime flat lens emitter on 7 channel MCPCB Bin kit option codes M2, Red-Green-Blue-PC Amber-Cyan-PC Lime Kit number suffix Min flux Bin Color Bin Ranges 0000 06R R05-R06 26G G06-G07 09B B05 17A PCA2 03C C03 02L PCL COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. Description Red, full distribution flux; full distribution wavelength Green, full distribution flux; full distribution wavelength Blue, full distribution flux; full distribution wavelength PC Amber, full distribution flux; full distribution wavelength Cyan, full distribution flux; full distribution wavelength PC Lime full distribution flux, full distribution wavelength 2 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Flux Bins [Preliminary] Table 1: Bin Code 06R 26G 09B 17A 03C 02L lm 1x Red 75 lm 1x Green Minimum Flux @ IF = 1000mA [1] W lm lm 1x 1x PC 1x Blue Amber Cyan lm 2x PC Lime lm 1x Red 105 160 lm 1x Green Maximum Flux @ IF = 1000mA [1] W lm lm 1x 1x PC 1x Blue Amber Cyan lm 2x PC Lime 280 1.0 1.5 90 175 85 156 495 1000 Notes for Table 1: 1. Flux performance is measured at 10ms pulse, TC = 25°C. LED Engin maintains a tolerance of ±10% on flux measurements. Wavelength Bins Table 2: Minimum Dominant Wavelength (λD) @ IF = 1000mA [1,2] (nm) 1x Red 1x Green 1x Blue 1x Cyan 617 622 519 522 449 495 Bin Code R05 R06 G06 G07 B05 C03 Maximum Dominant Wavelength (λD) @ IF = 1000mA [1,2] (nm) 1x Red 1x Green 1x Blue 1x Cyan 622 627 522 525 453 502 Notes for Table 2: 1. Wavelength is measured at 10ms pulse, TC = 25oC. 2. LED Engin maintains a tolerance of ± 1.0nm on dominant wavelength measurements. Forward Voltage Bin Table 3: Bin Code 0 1x Red 1.8 1x Green 3.0 Minimum Forward Voltage (VF) @ IF = 1000mA [1] (V) 1x 1x PC 1x 2x Blue Amber Cyan PC Lime 2.7 2.8 2.9 5.4 1x Red 2.8 1x Green 4.1 Maximum Forward Voltage (VF) @ IF = 1000mA [1] (V) 1x 1x PC 1x 2x Blue Amber Cyan PC Lime 3.4 3.8 4.0 6.8 Notes for Table 3: 1. Forward voltage is measured at 10ms pulse, TC = 25oC. LED Engin maintains a tolerance of ± 0.04V/ die for forward voltage measurements. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 3 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com PC Amber Chromaticity Group Standard Chromaticity Group plotted on excerpt from the CIE 1931 (2°) x-y Chromaticity Diagram. Coordinates are listed below. PC Amber Bin Coordinates Bin Code PCA2 CIEx CIEy 0.5469 0.4249 0.5700 0.4100 0.5900 0.4100 0.5610 0.4390 0.5469 0.4249 COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 4 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com PC Lime Chromaticity Group Standard Chromaticity Groups plotted on excerpt from the CIE 1931 (2°) x-y Chromaticity Diagram. Coordinates are listed below. PC Lime Bin Coordinates Bin Code PCL CIEx CIEy 0.3819 0.5055 0.4191 0.5790 0.4327 0.5655 0.3972 0.4986 0.3819 0.5055 Note: 1. For binning purposes, both PC Lime dies are connected in series. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 5 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Absolute Maximum Ratings Table 4: Parameter Symbol DC Forward Current[1] (per die) Red Green, Blue PC Amber Cyan PC Lime Power Dissipation Reverse Voltage Storage Temperature Junction Temperature Soldering Temperature [4] Allowable Reflow Cycles Value Unit 2500 3000 1500 1000 2500 60 See Note 3 -40 ~ +150 125 260 6 IF(MAX) Pd VR Tstd TJ(MAX) Tsol mA W V °C °C °C Notes for Table 4: 1. Maximum DC forward current is determined by the overall thermal resistance and ambient temperature. Follow the curves in Figure 11 for current derating. 2: Pulse forward current conditions: Pulse Width ≤ 10msec and Duty Cycle ≤ 10%. 3. LEDs are not designed to be reverse biased. 4. Solder conditions per JEDEC 020D. See Reflow Soldering Profile Figure 3. 5. LED Engin recommends taking reasonable precautions towards possible ESD damages and handling the emitter in an electrostatic protected area (EPA). An EPA may be adequately protected by ESD controls as outlined in ANSI/ESD S6.1. Optical Characteristics @TC = 25°C Table 5: Parameter Symbol Luminous Flux (@ IF = 1000mA) Luminous Flux (@ IF_Max) Dominant Wavelength (@ IF = 1000mA) Viewing Angle [2] Total Included Angle [3] ΦV ΦV 1xRed 95 190 1xGreen 180 340 λD 623 520 Typical 1xBlue [1] 1xPC Amber 1xCyan 42 (1.2W) 140 135 97 (2.8W) 182 135 451 2Θ½ Θ0.9 590 2xPC Lime 620 1240 500 Unit lm lm nm 114 156 Degrees Degrees Notes for Table 5: 1. When operating the Blue LED, observe IEC 62471 Risk Group 3 rating. Do not stare into the beam. 2. Viewing Angle is the off axis angle from emitter centerline where the luminous intensity is ½ of the peak value. 3. Total Included Angle is the total angle that includes 90% of the total luminous flux. Electrical Characteristics @TC = 25°C Table 6: Parameter Symbol Forward Voltage (@ IF = 1000mA) VF Temperature Coefficient ΔVF/ΔTJ of Forward Voltage Thermal Resistance RΘJ-C (Junction to Case) COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. Unit 1xRed 1xGreen 1xBlue 1xPC Amber 2.4 3.5 3.2 -1.9 -4.2 -1.8 1xCyan 2x PC Lime 3.6 3.8 6.4 V -3.2 -2.6 -3.6 mV/°C 0.8 6 °C/W LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com IPC/JEDEC Moisture Sensitivity Level Table 7 - IPC/JEDEC J-STD-20D.1 MSL Classification: Soak Requirements Floor Life Standard Accelerated Level Time Conditions Time (hrs) Conditions Time (hrs) Conditions 1 Unlimited ≤ 30°C/ 85% RH 168 +5/-0 85°C/ 85% RH n/a n/a Notes for Table 7: 1. The standard soak time includes a default value of 24 hours for semiconductor manufacturer’s exposure time (MET) between bake and bag and includes the maximum time allowed out of the bag at the distributor’s facility. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 7 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Mechanical Dimensions (mm) Pin Out Pin Die Color Polarity 2 B Red + 3 A Blue + 5 C Green + 6 F PC Lime + 8 E PC Lime + 9 G PC Amber + 11 D Cyan - 14 D Cyan + 15 G PC Amber - 17 E PC Lime - 20 F PC Lime - 21 C Green - 23 A Blue - 24 B Red - Figure 1: Package Outline Drawing Notes for Figure 1: 1. Unless otherwise noted, the tolerance = ± 0.20 mm. 2. Thermal contact, Pad 25, is electrically neutral. 3. Temperature measurement point: side ceramic closest to the Ts point Recommended Solder Pad Layout (mm) – Pedestal MCPCB Design Figure 2a: Recommended solder pad layout for anode, cathode, and thermal pad for pedestal design Note for Figure 2a: 1. Unless otherwise noted, the tolerance = ± 0.20 mm. 2. Pedestal MCPCB allows the emitter thermal slug to be soldered directly to the metal core of the MCPCB. Such MCPCB eliminate the high thermal resistance dielectric layer that standard MCPCB technologies use in between the emitter thermal slug and the metal core of the MCPCB, thus lowering the overall system thermal resistance. 3. LED Engin recommends x-ray sample monitoring for solder voids underneath the emitter thermal slug. The total area covered by solder voids should be less than 20% of the total emitter thermal slug area. Excessive solder voids will increase the emitter to MCPCB thermal resistance and may lead to higher failure rates due to thermal over stress. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 8 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Recommended Solder Mask Layout (mm) – Pedestal MCPCB Design Figure 2b: Recommended solder mask opening for anode, cathode, and thermal pad for pedestal design Note for Figure 2b: 1. Unless otherwise noted, the tolerance = ± 0.20 mm. Recommended 8 mil Stencil Apertures Layout (mm) – Pedestal MCPCB Design Figure 2c: Recommended 8mil stencil apertures layout for anode, cathode, and thermal pad for pedestal design Note for Figure 2c: 1. Unless otherwise noted, the tolerance = ± 0.20 mm. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 9 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Reflow Soldering Profile Figure 3: Reflow soldering profile for lead free soldering Typical Radiation Pattern 100% 90% 80% Relative Intensity 70% 60% 50% 40% 30% 20% 10% 0% -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 Angular Displacement (Degrees) Figure 4: Typical representative spatial radiation pattern – all dies on COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 10 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Typical Relative Spectral Power Distribution 1.0 0.9 Relative Spectral Power 0.8 RED 0.7 GREEN 0.6 BLUE 0.5 PC Lime 0.4 PC Amber 0.3 Cyan 0.2 0.1 0.0 400 450 500 550 600 650 700 750 800 Wavelength (nm) Figure 5: Typical relative spectral power vs. wavelength @ TC = 25°C, 1000mA, pulse Typical Forward Current Characteristics 3000 IF - Forward Current (mA) 2500 2000 Red 1500 Green Blue 1000 PC Lime PC Amber 500 Cyan 0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 VF - Forward Voltage (V) Figure 6: Typical forward current vs. forward voltage @ TC = 25°C, pulse Note: PC Lime curve represents forward voltage of 2 PC Lime dies connected in series COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 11 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Typical Relative Flux over Current 240% 220% 200% Relative Flux (%) 180% 160% 140% 120% Red 100% Green 80% Blue 60% 40% 20% 0% 0 500 1000 1500 2000 2500 3000 IF - Forward Current (mA) Figure 7a: Typical relative luminous flux vs. forward current @ TC = 25°C, pulse – R, G, B 240% 220% 200% Relative Flux (%) 180% 160% 140% PC Lime 120% PC Amber 100% 80% Cyan 60% 40% 20% 0% 0 500 1000 1500 2000 2500 3000 IF - Forward Current (mA) Figure 7b: Typical relative luminous flux vs. forward current @ TC = 25°C, pulse – PCL, PCA, Cyan COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 12 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Typical Relative Flux over Temperature 110% 100% 90% Relative Flux (%) 80% 70% 60% 50% Red 40% 30% Green 20% Blue (Radiant Flux) 10% 0% 25 35 45 55 65 75 85 TC - Case Temperature (oC) Figure 8a: Typical relative luminous flux vs. case temperature @1000mA, pulse – R, G, B 110% 100% 90% Relative Flux (%) 80% 70% 60% PC Lime 50% PC Amber 40% 30% Cyan 20% 10% 0% 25 35 45 55 TC - Case Temperature 65 75 85 (oC) Figure 8b: Typical relative luminous flux vs. case temperature @ 1000mA, pulse – PCL, PCA, Cyan COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 13 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Typical Dominant Wavelength Shift over Current 12.00 Wavelength Shift (nm) 10.00 Red 8.00 Green 6.00 Blue Cyan 4.00 2.00 0.00 -2.00 -4.00 -6.00 0 500 1000 1500 2000 2500 3000 IF - Forward Current (mA) Figure 9a: Typical dominant wavelength shift vs. forward current @ TC = 25°C, pulse – R, G, B, Cyan Typical Chromaticity Coordinate Shift over Current 0.0100 0.0080 Delta_Cx, Delta_Cy 0.0060 0.0040 0.0020 0.0000 -0.0020 PC Amber Delta_Cx -0.0040 PC Amber Delta_Cy -0.0060 -0.0080 -0.0100 0 200 400 600 800 1000 1200 1400 1600 IF - Forward Current (mA) Figure 9b: Typical chromaticity coordinate shift vs. forward current @ TC = 25°C, pulse – PC Amber COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 14 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com 0.0100 Delta_Cx, Delta_Cy 0.0080 0.0060 PC Lime Delta_Cx 0.0040 PC Lime Delta_Cy 0.0020 0.0000 -0.0020 -0.0040 -0.0060 -0.0080 -0.0100 0 500 1000 1500 2000 2500 3000 IF - Forward Current (mA) Figure 9c: Typical chromaticity coordinate shift vs. forward current @ TC = 25°C, pulse – PC Lime COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 15 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Typical Dominant Wavelength Shift over Temperature 4.00 3.50 Wavelength Shift (nm) 3.00 2.50 2.00 1.50 Red 1.00 Green 0.50 Blue 0.00 Cyan -0.50 25 35 45 55 65 75 85 TC - Case Temperature (oC) Figure 10a: Typical dominant wavelength shift vs. case temperature @ 1000mA, pulse – R, G, B, Cyan Typical Chromaticity Coordinate Shift over Temperature 0.0100 0.0080 Delta_Cx, Delta_Cy 0.0060 0.0040 0.0020 0.0000 -0.0020 -0.0040 PC Amber Delta_Cx -0.0060 PC Amber Delta_Cy -0.0080 -0.0100 25 35 45 55 65 75 85 TC - Case Temperature (oC) Figure 10b: Typical chromaticity coordinate shift vs. case temperature @1000mA, pulse – PC Amber COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 16 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com 0.0100 0.0080 Delta_Cx, Delta_Cy 0.0060 0.0040 0.0020 0.0000 -0.0020 -0.0040 PC Lime Delta_Cx -0.0060 PC Lime Delta_Cy -0.0080 -0.0100 25 35 45 55 TC - Case Temperature 65 75 85 (oC) Figure 10c: Typical chromaticity coordinate shift vs. case temperature @ 1000mA, pulse – PC Lime COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 17 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Current De-rating [TBD] Figure 11: Maximum forward current vs. ambient temperature Notes for Figure 11: 1. Maximum current assumes that all 7 LED die are operating concurrently at the same current. 2. RΘJ-C [Junction to Case Thermal Resistance] for LZ7-04M2PD is 0.8°C/W. 3. RΘJ-A [Junction to Ambient Thermal Resistance] = RΘJ-C + RΘC-A [Case to Ambient Thermal Resistance]. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 18 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Emitter Tape and Reel Specifications (mm) Figure 12: Emitter carrier tape specifications (mm). Ø 178mm (SMALL REEL) Ø 330mm (LARGE REEL) Figure 13: Emitter reel specifications (mm). Notes for Figure 13: 1. Small reel quantity: up to 250 emitters 2. Large reel quantity: 250-2000 emitters. 3. Single flux bin and single wavelength bin per reel. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 19 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com LZ7 MCPCB Family Part number Type of MCPCB Dimension (mm) LZ7-Axxxxx 7-channel 38.3 x 31.2 COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 20 Emitter + MCPCB Thermal Resistance (oC/W) 0.8 + 0.1 = 0.9 Typical Vf (V) Typical If (mA) 1000 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com LZ7-Axxxxx 7 channel, MCPCB (7x1) Dimensions (mm) Notes: • Unless otherwise noted, the tolerance = ± 0.2 mm. • Standard screw refers to M3 or #4-40 screw. • The thermal resistance of the MCPCB is: RΘC-B 0.1°C/W Components used MCPCB: Thermistor: Ch. 1 2 3 4 5 6 7 T MCPCB Pad 1 14 2 13 3 12 4 11 5 10 6 9 7 8 1-RT 2-RT MHE-301 copper NCP15XH103F03RC (Rayben) (Murata) Pad layout Die/ Color B/ Red A/ Blue C/ Green F/ PC Lime E/ PC Lime G/ PC Amber D/ Cyan NTC COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. Function Anode + Cathode Anode + Cathode Anode + Cathode Anode + Cathode Anode + Cathode Anode + Cathode Cathode Anode + 10kOhm NTC 21 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Application Guidelines MCPCB Assembly Recommendations A good thermal design requires an efficient heat transfer from the MCPCB to the heat sink. In order to minimize air gaps in between the MCPCB and the heat sink, it is common practice to use thermal interface materials such as thermal pastes, thermal pads, phase change materials and thermal epoxies. Each material has its pros and cons depending on the design. Thermal interface materials are most efficient when the mating surfaces of the MCPCB and the heat sink are flat and smooth. Rough and uneven surfaces may cause gaps with higher thermal resistances, increasing the overall thermal resistance of this interface. It is critical that the thermal resistance of the interface is low, allowing for an efficient heat transfer to the heat sink and keeping MCPCB temperatures low. When optimizing the thermal performance, attention must also be paid to the amount of stress that is applied on the MCPCB. Too much stress can cause the ceramic emitter to crack. To relax some of the stress, it is advisable to use plastic washers between the screw head and the MCPCB and to follow the torque range listed below. For applications where the heat sink temperature can be above 50oC, it is recommended to use high temperature and rigid plastic washers, such as polycarbonate or glass-filled nylon. LED Engin recommends the use of the following thermal interface materials: 1. Bergquist’s Gap Pad 5000S35, 0.020in thick • Part Number: Gap Pad® 5000S35 0.020in/0.508mm • Thickness: 0.020in/0.508mm • Thermal conductivity: 5 W/m-K • Continuous use max temperature: 200°C • Using M3 Screw (or #4 screw), with polycarbonate or glass-filled nylon washer (#4) the recommended torque range is: 20 to 25 oz-in (1.25 to 1.56 lbf-in or 0.14 to 0.18 N-m) 2. 3M’s Acrylic Interface Pad 5590H • Part number: 5590H @ 0.5mm • Thickness: 0.020in/0.508mm • Thermal conductivity: 3 W/m-K • Continuous use max temperature: 100°C • Using M3 Screw (or #4 screw), with polycarbonate or glass-filled nylon washer (#4) the recommended torque range is: 20 to 25 oz-in (1.25 to 1.56 lbf-in or 0.14 to 0.18 N-m) Mechanical Mounting Considerations The mounting of MCPCB assembly is a critical process step. Excessive mechanical stress build up in the MCPCB can cause the MCPCB to warp which can lead to emitter substrate cracking and subsequent cracking of the LED dies LED Engin recommends the following steps to avoid mechanical stress build up in the MCPCB: o Inspect MCPCB and heat sink for flatness and smoothness. o Select appropriate torque for mounting screws. Screw torque depends on the MCPCB mounting method (thermal interface materials, screws, and washer). o Always use three M3 or #4-40 screws with #4 washers. o When fastening the three screws, it is recommended to tighten the screws in multiple small steps. This method avoids building stress by tilting the MCPCB when one screw is tightened in a single step. o Always use plastic washers in combinations with the three screws. This avoids high point contact stress on the screw head to MCPCB interface, in case the screw is not seated perpendicular. o In designs with non-tapped holes using self-tapping screws, it is common practice to follow a method of three turns tapping a hole clockwise, followed by half a turn anti-clockwise, until the appropriate torque is reached. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 22 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com Wire Soldering   To ease soldering wire to MCPCB process, it is advised to preheat the MCPCB on a hot plate of 125-150oC. Subsequently, apply the solder and additional heat from the solder iron will initiate a good solder reflow. It is recommended to use a solder iron of more than 60W. It is advised to use lead-free, no-clean solder. For example: SN-96.5 AG-3.0 CU 0.5 #58/275 from Kester (pn: 24-7068-7601) COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 23 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com About LED Engin LED Engin, an OSRAM business based in California’s Silicon Valley, develops, manufactures, and sells advanced LED emitters, optics and light engines to create uncompromised lighting experiences for a wide range of entertainment, architectural, general lighting and specialty applications. LuxiGenTM multi-die emitter and secondary lens combinations reliably deliver industry-leading flux density, upwards of 5000 quality lumens to a target, in a wide spectrum of colors including whites, tunable whites, multi-color and UV LEDs in a unique patented compact ceramic package. Our LuxiTuneTM series of tunable white lighting modules leverage our LuxiGen emitters and lenses to deliver quality, control, freedom and high density tunable white light solutions for a broad range of new recessed and downlighting applications. The small size, yet remarkably powerful beam output and superior insource color mixing, allows for a previously unobtainable freedom of design wherever high-flux density, directional light is required. LED Engin is committed to providing products that conserve natural resources and reduce greenhouse emissions; and reserves the right to make changes to improve performance without notice. For more information, please contact sales@ledengin.com or +1 408 922-7200. COPYRIGHT © 2019 LED ENGIN. ALL RIGHTS RESERVED. 24 LZ7-04M2PD (Pre 0.6 – 03/29/19) LED Engin | 651 River Oaks Parkway | San Jose, CA 95134 USA | ph +1 408 922 7200 | fax +1 408 922 0158 | em sales@ledengin.com | www.ledengin.com