BECTRON PL 4122-37
Harmonization Code : 3208.20.90 | Paints and varnishes that are dispersed or dissolved in a non aqueous medium
Main features
- Transparent Urethane-Alkyd Conformal Coating
- 30-Minute 80 deg C Cure
- 1 x 10^15 ohm-cm Volume Resistivity
Product Description
Bectron® PL 4122-37 E BLF FLZ is a transparent urethane-modified alkyd conformal coating for protecting printed circuit boards and electronic components. The low-viscosity varnish is formulated for room-temperature or oven curing and supports select-coat, spray, automated dipping, brushing, and hand-spray processes. The cured thin film retains flexibility and documented dielectric properties under environmental exposure. Supported applications include electronics used in automotive, marine-navigation, industrial, and corrosive-gas environments, together with hybrids, surface-mount devices, and discrete components. The 37% solids grade is intended for general coating applications.
Key features
- 37% solids grade: The PL 4122-37 grade has a non-volatile content of 37 ± 1% under ISO 3251 conditions.
- Flexible cure options: Documented cure schedules include 16 hours at 23°C or 30 minutes at 80°C.
- Thin-film electrical properties: Typical cured data include 1 × 10¹⁵ ohm·cm volume resistivity and CTI 600.
Applications / Suitable for
- Printed circuit boards exposed to automotive, marine-navigation, industrial, or corrosive-gas environments
- Hybrid electronic assemblies
- Surface-mount devices and discrete components
TDS, SDS & Technical Documents
Technical Specifications
Thermal Properties
Electrical Properties
Chemical Properties
Additional Information
As-supplied / before-processing properties
Typical as-supplied or mixed-state values unless otherwise stated. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Non-volatile content | 37 ± 1 | % | ISO 3251; 1.5 g, 2 h at 130°C |
| Flow time | 40 ± 3 | s | DIN EN ISO 2431, 4 mm cup at 23°C |
| Approximate viscosity | 50 | mPa·s | Associated with 4 mm cup flow time |
| Density | 0.86 ± 0.01 | g/cm³ | DIN EN ISO 2811-2 at 23°C |
| Shelf life | 6 | months | At 23°C |
| Dust-dry time | 0.25 | h | At 23°C |
| Touch-dry time | 1 | h | At 23°C |
| Cure options | 16 h at 23°C; 0.5 h at 80°C | N/A | Air cure or batch-oven cure |
After-processing / final-state properties
Typical final-state values under the stated system and test conditions. These values are not sales specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service temperature | -50 to 105 | °C | Documented range |
| Shrinkage | 16 | % | CQP014-1 |
| Heat-aging weight loss | 11 | % | ASTM C792 |
| Staining | No staining | N/A | ASTM D925 on common substrates |
