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LOCTITE STYCAST OS 8300 – Epoxy Adhesive – Active alignment of optical devices, fiber component sealing, and opto-package assembly

  • Item Name: LOCTITE STYCAST OS 8300
  • Manufacturer: Henkel
  • Product category: Adhesive for optical and semiconductor device assembly
  • Technologies: Epoxy
  • Applications: Ideal for active alignment, packaging, and sealing of optical, fiber, and optoelectronic components.
  • Color: Part A is a colorless liquid; Part B is an amber liquid
  • Cure type: Heat cure
  • Package size: Contact to Techniq VN for details

1. Product Overview

LOCTITE STYCAST OS 8300 (also known as OA 8300, OB 8300) is a two-component epoxy adhesive designed for semiconductor, optical, fiber optic, and optoelectronic applications. It offers:

  • High spectral transmission
  • Excellent adhesion
  • Low weight loss
  • Low halogen content
  • Heat curing

2. Applications

  • Active alignment of optical devices
  • Packaging of optoelectronic components
  • Sealing of fiber components
  • Opto-package assembly

3. Typical Properties

Uncured Properties

Property Value
Viscosity @ 25°C (mPa·s) 4,000
Pot Life @ 20-25°C ≤3 hours

Curing Conditions

Temperature (°C) Time
150°C 60 min (recommended)
150°C 1 min (alternate)
120°C 5 min
100°C 10 min
80°C 30 min

Cured Properties

Property Value
Hardness (Shore D) 85
Glass Transition Temperature (Tg) 103°C
Coefficient of Thermal Expansion (ppm/°C) Below Tg: 60, Above Tg: 186
Thermal Degradation Temperature 410°C
Weight Loss (%) 200°C: 0.2%, 250°C: 0.39%, 300°C: 0.73%
Storage Modulus (N/mm²) 2,700 (392,000 psi)

Electrical Properties

Property Value
Volume Resistance @ 25°C (ohm-cm) ≥1.5 × 10¹³

Optical Properties

Property Value
Refractive Index @ 589 nm, 25°C 1.5683
Spectral Transmission (%) 550 nm: ≥50.0, 800-1,000 nm: ≥96.68, 1,100 nm: ≥98.38

Mechanical Performance

Property Value
Die Shear Strength (Glass to Glass, 2×2 mm die) >15 Kg

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