Product description
Bectron® MR 3404 is a one-component hot melt resin thick film coating developed for electronic applications. As a thermoplastic there is no curing reaction only a rapid solidification of the resin on cooling.
Application of Bectron® MR 3404
Bectron® MR 3404 dielectric properties are ideal for electronic applications as well as protection against humidity, corrosion vibration and migration. It is based on polyolefin resin chemistry which is better suited to electronics than conventional polyamide based hot-melt thermoplastic. It is suitable for application of a thick film coating on PCBs and components to provide chemical protection and/or mechanical support to secure them against shock and vibration. It can be placed selectively to secure and protect single components or for whole PCBs or hybrids. Bectron MR 3404 is recommended for serial production where fast solidification gives a short process time requiring no curing oven.
Properties of Bectron® MR 3404 in cured material
The tough plastic resin Bectron® MR 3404 has a maximum operating temperature of 105°C. It has excellent dielectric properties and shows very good adhesive strength on many different substrates over the temperature range from -40 °C to +105°C. It has low humidity absorption providing stable dielectric properties even after water immersion. Resistant to acids and bleach, polar solvents and fungal growth Not resistant to aliphatic aromatic and chlorinated solvents Very easy re-work as it can be melted and hardened reversibly. Satisfies the requirements of ROHS Inspection of coated area is possible under UV light
See all Elantas Product Here
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
Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.
Properties of component as supplied
Property | Condition | Value | Unit |
Viscosity (DIN 53018) | 180°C | 1,100 ± 400 | mPas |
Density (DIN 53217) | 23°C | 0.86 ± 0.02 | g/cm³ |
Shelf life | 23°C | 6 | months |
Thermal properties in cured condition
Property | Condition | Value | Unit |
Melting Range; DCS 20K/min | 168h @ 105°C | 110 – 150 | °C |
Max. Operation temperature | 168h @ 105°C | 105 | °C |
Temperature Range |
| -40 to +105 | °C |
Mechanical properties in cured condition
Property | Condition | Value | Unit |
Hardness, ISO 868 | 23°C | 20 ± 6 | Shore A |
| 105 °C | undetectable | Shore A |
