LED SMT Liquid
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With the increased use of LEDs and optical sensors in surface mount applications, there is a need for optically clear encapsulants with low moisture absorption and high glass transition temperatures.

When heated to solder reflow temperatures, moisture absorbed in the compound can vaporize – causing a rapid rise of pressure inside the packages. Higher glass transition temperature of the molding compounds can increase device performance by improving both popcorn resistance, and by reducing stresses on the wire bonds during thermal temperature cycling.

SolEpoxy Optically Clear Molding Compounds are the choice when optical clarity and UV & heat stability are vital. Since it is an epoxy-based thermoset molding compound, high-productivity transfer mold manufacturing is possible.

Many colors are available through the use of clear, stable dyes. Optical sensors can be encapsulated in colored compound to achieve tunable transmittance. Black dyes, filter only the infrared (IR) spectrum, colored dyes can select types of lighting in the visible spectrum.

Key Advantages:

  • High-productivity molding compound capable of transfer molding
  • High glass transition temperature, able to withstand solder reflow temperatures 
  • Low moisture absorption – alleviates pressure-induced stresses 
  • Non-yellowing when exposed to UV light and heat 
  • Many colors available and tunable transmittance
 
OL88-8 High refractive index liquid encapsulant for optoelectronic devices 
OL88-8 is an ultra-clear hybrid liquid encapsulant developed specifically for outdoor RGB displays. It is uniquely suited for RGB SMT devices due to its very high adhesion to black-faced PPA packages and very low moisture absorption, able to pass -65C to 150C temperature shock cycles and 85C / 85% RH + 3x 260C reflow required for outdoor RGB SMT displays.
OP1000 Heat and UV-resistant, optically clear molding compound for RBG devices and backlighting 
  • Resists yellowing up to 125C for thousands of hours
  • Glass transition temperature (Tg) > 135C
  • Diffused, colored and light filtering versions