Polyurethane Conformal Coating | ShieldSys™ 470
Ultra-High Performance Crosslinking Resin; Superior Adhesion and Chemical Resistance; Unmatched Toughness
ShieldSys™ 470 Polyurethane Conformal Coating is Miller-Stephenson’s most advanced conformal coating, utilizing our exclusive surface activation chemistry and high-density crosslinking polyurethane resin, ShieldSys 470 represents a substantial advancement in PCB coating technology. The single component, pre-catalyzed coating offers ease of application both with robotics or manual spray equipment and the self-levelling properties will ensure the coating wets all areas of the board and cures to a smooth profile with predictable film thickness. The robustness of the ShieldSys™ 470 Polyurethane conformal coating provides a cured filmed exhibiting superior humidity, abrasion and chemical resistance and will maintain its properties even after long exposure to the elements with minimal color change. Benefits include:
- Exclusive High-Density Crosslinking Technology
- Superior Toughness and Abrasion Resistance
- Solvent, Humidity and Corrosion Resistant
- Reworkable and Room Temperature Cure
- Exceptional Dielectric Properties
- No Cracking or Crazing with Vibration
ShieldSys™ 470 Polyurethane Conformal Coating finds typical applications where moisture, aggressive chemicals/vapors, large temperature variations, vibrations or fungal exposure may be present. Fully cured, our coating offers excellent resistance and protection to PCBs ensure long-term reliability and consistent performance in the field. Our superior chemistry can be found in application requiring unmatched reliability such as defense, automotive and aerospace applications.
ShieldSys™ 470 Polyurethane Conformal Coating : Advanced Chemistry, Superior Performance, Reliable Application – a potent combination
ShieldSys 470 was developed from inception to be the most advanced, reliable and convenient polyurethane conformal coating available. The combination of exclusively Miller-Stephenson high density crosslinking resin technology and our utilization of advanced wetting / levelling agents, the ShieldSys 470 generates consistent, uniform thin films on PCB and components regardless of application method. This very forgiving coating offers superior chemical and mechanical properties while also exhibiting a room temperature cure and the ability to reworked.
Polyurethane Conformal Coating | ShieldSys™ 470 Electrical & Physical Properties
Cure Electrical Properties
Dielectric Strength, volts/mil | 1200 |
Dielectric Constant @ 10^5 Hz | 4.2 |
Dissipation Factor @ 10^5 Hz | 0.01 |
Volume Resistivity (ohm) | 2 x 10^13 |
Cured Physical Properties
Operating Temperature: | -67 °F/-55 °C to 230 °F/ 110 °C |
Appearance: | No blistering, wrinkling, cracking, or peeling of film, after thermal shock and moisture resistance testing. |
Flexibility: | No cracking of film over a 1/8″ diameter mandrel. |
Fungus Resistance: | Non-nutrient per ASTM G21 |
Fluorescent: | Under ultraviolet light. |
50 years of experience in the Electronics Industry – at your service
Miller-Stephenson has been manufacturing and formulating Polyurethane Conformal Coating for over 50 years, we have the technical and application expertise to help your team choose, apply, and re-work any conformal coating within our portfolio. We offer both commercial and MIL-spec coatings, and all of our coatings are held to highest performance standards. When choosing any of our conformal coating you can expect the following benefits:
- Simple, reliable application process
- Specialized formulas to provide uniform, thin films
- Easy removal, repair and replacement
- Superior Protection against thermal and mechanical shock
- MIL-Spec and Commercial-Spec polymer coatings
For further reading about Conformal Coatings
The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.