L202-4080033C30000 Datasheet, PDF (13/14 Pages) Lumileds Lighting Company – Turnkey solution on a rigid substrate enabling high-efficacy designs

Assembly Precautions
The LUXEON 3535L emitter package contains a silicone overcoat to protect the LED chip and extract the maximum amount
of light. As with most silicones used in LED optics, care must be taken to prevent any incompatible chemicals from directly or
indirectly reacting with the silicone.
The silicone overcoat used in the LUXEON emitter is gas permeable. Consequently, oxygen and volatile organic compound
(VOC) gas molecules can diffuse into the silicone overcoat. VOCs may originate from adhesives, solder fluxes, conformal coating
materials, potting materials and even some of the inks that are used to print the PCBs.
Some VOCs and chemicals react with silicone and produce discoloration and surface damage. Other VOCs do not chemically
react with the silicone material directly but diffuse into the silicone and oxidize during the presence of heat or light. Regardless of
the physical mechanism, both cases may affect the total LED light output. Since silicone permeability increases with temperature,
more VOCs may diffuse into and/or evaporate out from the silicone.
Please refer to Application Brief AB203 for more details on VOCs and other incompatible chemicals.
It is recommended that LUXEON XR-3535L always be handled/assembled in an ESD safe environment. Handle board around
edges and avoid touching LEDs or exposed metals directly. LUXEON XF-3535L is designed for operation within maximum
boundaries as described in this datasheet. Operation outside of maximum ratings may result in LED failure and induce light
output loss or uncontrolled failure modes. If multiple products are connected in parallel, failure of one module may result in
excessive current in remaining modules. Make sure wires are connected in the correct polarity and use only recommended wire
gauge (18-24 AWG).
Zhaga Compliance
Table 7. Zhaga compliance information for LUXEON XR-3535L.
Designation of the ECG housing (book-1 / annex C)
Designation of the Book-7 LLE category
Luminous Flux Category at t_p,max
CCT category at t_p,max
CRI at t_p,max
CCT/CRI codes per IEC 62732
Position of temperature measurement point t_p
Value of t_p,max
Value of t_p, headroom
Number of LED modules in LLE
NA
L28W6
C020
3000, 3500, 4000, 5000 K
80
830, 835, 840, 850
Same as T_c point
85°C
30°C
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DS145 LUXEON XR-3535L Product Datasheet 20151022 ©2015 Lumileds Holding B.V. All rights reserved.
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