Optocoupler/Photocouplers consist of an infrared LED (Lightning emitting device) and a photosensitive receiving device optically coupled into the same package. What this does is allows electrical signals to be passed from the input to the output circuit; separated by an isolation barrier that is designed to withstand high voltage levels. It allows for the isolation of high and low-voltage components reliably. This finds its way into many applications for safety reasons, as well as to prevent the damaging of expensive or important electrical components.

Single and Double Mold Optocouplers

Pulse oximeters

Pulse oximetry is often called the fifth vital sign. More medical professionals than ever check blood oxygen saturation (SpO2). Blood red cells contain a protein called hemoglobin. Oxygen saturation is defined as the measurement of the amount of oxygen dissolved in blood, determined by comparing the values of Oxy-hemoglobin (HbO2) to Deoxy-hemoglobin (Hb). 

A pulse oximeter is a non-invasive electro-optical device for measuring both the heart rate and oxygen saturation. This quantity is inferred by measuring the optical transmittance of perfused skin in different wavelengths of light. One method for doing this is by shining both a red LED and an infrared LED into a body part (such as a finger or wrist) and then measuring and comparing the relative intensities of the light from each LED in terms of a ratio, which is expressed as the percentage of oxygen saturation. 

Package

SOP4, SOP5, SOP8, SOP16, DIP4, DIP6, DIP8, etc

Devices

Transistors, IGBT drive gate, TRIAC, etc.

Typical Operating Environment

-55°C~110°C

Typical Reliability Tests

• JEDEC MSL3 to MSL1

• High-temperature storage: 150°C x 1000 hrs

• Temperature cycling: -55~125 °C x 1000 cycles

• uHAST: 168 hrs @130°C and 85%RH

• Temperature humidity bias: 1000hrs @85°C, 85%RH, Vcc

• Resistance to soldering heat: 1 x 10s @260°C

*MSL preconditioning was performed prior to temperature humidity bias, thermal cycling, and HAST. 

Two different light wavelengths are used to measure the actual difference in the absorption spectra of HbO2 and Hb. The bloodstream is affected by the concentration of HbO2 and Hb, and their absorption coefficients are measured using two wavelengths 660 nm (red light spectra) and 880 to 940 nm (infrared light spectra). Deoxygenated and oxygenated hemoglobin absorb different wavelengths. Deoxygenated hemoglobin (Hb) has a higher absorption at 660 nm and oxygenated hemoglobin (HbO2 ) has a higher absorption at 940 nm.

White reflective mold compounds

White, highly reflective epoxy molding compounds, also abreviated as WMC, are epoxy molding compounds that are filled with a highly reflective filler that stays reflective even after exposure to  heat and UV for long periods of time. We offer a range of highly reflective, white, non-yellowing epoxy mold compounds for led packages and lighting applications that require a high-performance non-yellowing compound with high brightness and reflectivity. After the plant closing of KYOCERA in Singapore, a lot of customers are seeking for substitutes of Kyocera KE-96/KE-95

We are happy to say that we have developed multiple alternatives to Kyocera KE-96/KE-95  with high reflectivity and you can contact us to request samples.

Yellowing By Oxidation 

• WMC170-15: Only the surface contacting with air shows yellowish color, however, the inner material shows no color change.

• WMC170-2:  No color change by heat oxidation

• WMC170-6:  No color change by heat oxidation

Optically clear molding compounds

Optically clear encapsulants provide durable clarity, high product yields, superior process characteristics, and high reliability. Clear epoxy Mold compounds have different filler and chemistry than most common EMCs. Optically clear compounds are also used for LED devices, and to encapsulate optical or optoelectronic devices that require both a high level of light transmittance as well as a good level of mechanical protection. In a similar process to Glob Top encapsulation, a literal glob of clear encapsulant is dropped directly into place on top of the LED. In other production processes, optically clear compounds are used to cast the LED’s final body. Phosphor, colored dyes, and diffusant concentrates can be added to this liquid encapsulant to fine tune it to your needs and alter its optical properties.

TC-8020 series is a high transmission optically clear epoxy molding compound that is specifically developed for emitter and LED encapsulation. Its excellent fluidity design helps it to become easily moldable and processable while offering excellent package performance and durability. This is supported by its long-term transmittance and post reflow reliability. It offers good adhesion to Bismaleimide Triazine - BT substrates and metal leadframes, good flexural modulus, and excellent anti-reflow performance while also passing the stringent MSL 3/2A JEDEC requirements.

Long term high transmittance

• TC-8020T Standard: >90% Transmittance over 450nm
• TC-8020T-IR800: Absorption between 340 - 700nm; >90% Transmittance over 800nm 
  
  
• TC-8020T-IR840: Absorption between 340 - 840nm; >90% Transmittance over 840nm
  
  
• High Refractive Index of 1.56 for max 
  
  
• Customizable, application-specific filters available

 

High Reliability Performance 

• Low moisture absorption 

• Resist 1,000 hours yellowing up to 125℃

• Competitive results in various reliability tests 

Pass MSL 3/2A JEDEC requirements.

• Good adhesion to BT substrates and metal leadframes

• Good flexural modulus

• Excellent anti-reflow performance

• TC-8020LS low stress version also available

Applications:

• Low-Power LED Encapsulation

• Optical Emitter

• Gesture Detection Sensors

• Ambient Light Sensors

• IR and Near-IR Sensors

• Data transmission and industrial fibers.