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UVLED365-SMD Datasheet(PDF) 5 Page - Roithner LaserTechnik GmbH |
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UVLED365-SMD Datasheet(HTML) 5 Page - Roithner LaserTechnik GmbH |
5 / 6 page 18.08.2010 uvled365_smd.doc 5 of 6 Precaution for Use 1. Cautions • This device is a UV LED, which radiates intense UV light during operation. • DO NOT look directly into the UV light or look through the optical system. To prevent inadequate exposure of UV radiation, wearing UV protective glasses is recommended 2. Moisture Proof Package • When moisture is absorbed into the SMD package, it may vaporize and expand during soldering. This can cause exfoliation of the contacts, alter the optical characteristics of the LED, and may irreversible damage the LED. 3. Soldering • The LEDs should be sodered using the reflow soldering method. Function of the LEDs can not be guaranteed after assembling was done using dip soldering method • Recommended soldering conditions: Reflow Soldering Dip Soldering Lead Solder Lead-free Solder Pre-Heat 120 …150°C 180 …200°C - Pre-Heat Time max 120 s max 120 s - Peak Temperature 240°C 260°C max 350°C. Soldering time max 10 s max 10 s max 3 s Condition Please see graph below Please see graph below - Lead Solder: Lead free Solder: Recommended Solder Pad design (unit mm): • Soldering at the lowest possible temperatures is desireable for the LEDs. • Occasionally there is a decrease in LEDs brightness due to the influence of heat or ambient atmoshere during soldering. Nitrogen reflow soldering is recommended therefor. • LEDs encapsulation material is silicone. Therefor the LEDs surface is soft and must not be exposed to strong pressure during soldering. |
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