EPO-TEK 377 is a two-component, high-Tg, fiber-optic grade epoxy well suited for semiconductor and optical applications. Manufactured by Epoxy Technology, Inc., it delivers outstanding near to mid-IR transmission (≥98% at 1,000–6,800 nm), a refractive index of 1.5195, and Tg ≥95°C — making it a premier choice for fiber optic packages that must perform reliably across a wide infrared spectral range.
Features & Benefits
- Exceptional near to mid-IR transmission: ≥98% @ 1,000–6,800 nm for broadband fiber optic packaging
- Long 24-hour pot life for large-batch production and complex assembly operations
- High Tg ≥95°C for reliable performance at elevated temperature
- Low viscosity (150–300 cPs) for precise dispense in tight fiber optic clearances
- Low ion content (Cl⁻: 26 ppm, Na⁺: 15 ppm) for semiconductor-grade reliability
- Proven fiber-optic grade — used in demanding photonic and telecom device packaging
Typical Applications
- Fiber optic connector bonding and ferrule attachment in telecom assemblies
- Semiconductor and optical component packaging requiring near to mid-IR transparency
- Optical fiber array bonding in photonic integrated circuits
- Die attach in optoelectronic packages operating in the 1,000–6,800 nm spectral range