Bectron® PT 4606: High-Performance Polyurethane Coating for PCB Protection
Bectron® PT 4606 by Elantas is a solvent-free, one-component polyurethane coating designed for high-performance protection of printed circuit boards (PCBs). This transparent coating is cured using UV irradiation and moisture in shadow areas, offering rapid curing and superior adhesion. Its high viscosity and thixotropic properties allow for precise application, making it ideal for sealing components, connections, or creating a dam for dam-and-fill applications.
Key Features of Bectron® PT 4606:
- Rapid UV curing with moisture shadow-cure
- Temperature resistance from -40°C to +120°C
- Excellent flexibility at low temperatures (-40°C)
- Strong adhesion to most substrates
- Outstanding dielectric and insulation properties
- Solvent-free, highly thixotropic rheology
- ROHS compliant
Applications:
Bectron® PT 4606 is a versatile, VOC-free conformal coating designed for surface mount devices, hybrids, and other electronics. It provides superior protection against moisture, corrosion, and vibration while maintaining excellent electrical performance. Its flow properties enable precise coating of small areas without unwanted spread.
About Prostech
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs.
With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
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Table 1 – Properties of Materials as Supplied
| Property | Condition | Value | Unit |
| Colour | Blue | ||
| Viscosity | DIN 53019, D = 10s⁻¹, 23°C | 38,000 ± 8,000 | mPa.s |
| Density | DIN EN ISO 2811-2, 20°C | 1.12 ± 0.05 | g/cm³ |
| Recommended Storage | 5-10°C | 6 | Months |
Table 2 – Curing Conditions
| Property | Condition | Value | Unit |
| UVA | 3000 ± 1000 | mJ/cm² | |
| Curing Time | 5 ± 2 | Sec |
Table 3 – Thermal Properties of Cured Compound
| Property | Condition | Value | Unit |
| Glass Transition Temperature | IEC 61006, penetration mode | -16 | °C |
| Linear Expansion Coefficient | Beck M56, above Tg | 1.8 x 10⁻⁴ | °K⁻¹ |
| Temperature Range | -40 to +120 | °C |
