www.seoulsemicon.com

Product Data Sheet

SSWM41DI2 –Side View LED

19

Rev1.0, November 22, 2019

Handling of Silicone Resin for LEDs

19

Product Data Sheet

(1) During processing, mechanical stress on the surface should be minimized as much as possible.

Sharp objects of all types should not be used to pierce the sealing compound.

(2) In general, LEDs should only be handled from the side. By the way, this also applies to

LEDs without a silicone sealant, since the surface can also become scratched.

(3) When populating boards in SMT production, there are basically no restrictions regarding the form

of the pick and place nozzle, except that mechanical pressure on the surface of the resin must be

prevented. This is assured by choosing a pick and place nozzle which is larger than the LED’s

reflector area.

(4) Silicone differs from materials conventionally used for the manufacturing of LEDs. These

conditions must be considered during the handling of such devices. Compared to standard

encapsulants, silicone is generally softer, and the surface is more likely to attract dust. As

mentioned previously, the increased sensitivity to dust requires special care during processing. In

cases where a minimal level of dirt and dust particles cannot be guaranteed, a suitable cleaning

solution must be applied to the surface after the soldering of components.

(5) Seoul Semiconductor suggests using isopropyl alcohol for cleaning. In case other solvents are

used, it must be assured that these solvents do not dissolve the package or resin. Ultrasonic

cleaning is not recommended. Ultrasonic cleaning may cause damage to the LED.

(6) Please do not mold this product into another resin (epoxy, urethane, etc) and do not handle this

product with acid or sulfur material in sealed space.

(7) Avoid leaving fingerprints on silicone resin parts.