• Item Name: Bectron® PL 4122 E BLF FLZ
• Manufacturer: ELANTAS Beck GmbH
• Technologies: Urethane-modified alkyd thin film varnish
• Color: Transparent
• Cure Type: Room temperature air cure (16 h) or accelerated oven cure (80°C, 0.5 h)
• Package Size: Contact to Techniq VN for details.
• Shelf Life: 6 months
Bectron® PL 4122 E BLF FLZ is a transparent polyurethane varnish based on urethane-modified alkyd chemistry. It offers low pin corrosion, fast curing (at room temperature or oven cure), and is lead-free, solvent-safe (no aromatic compounds), and RoHS compliant. It delivers superior thermal, dielectric, and chemical resistance while maintaining flexibility under thermal shock and PCB bending.
Available in three viscosity/solids grades for different application systems:
PL 4122-37 E BLF FLZ
PL 4122-40 E BLF FLZ
PL 4122-45 E BLF FLZ
Protective coating for PCBs in aggressive environments: automotive, marine navigation, industrial, corrosive gas.
Suitable for hybrids, SMDs, and discrete components.
Designed for safety-critical electronic systems.
Maintains dielectric and adhesion performance even under temperature cycling (-40 to +125 °C, >750 cycles).
Compatible with robotic and automated coating systems (spray, dip, select coat), as well as manual methods.
| Property | Condition | Value | Unit |
|---|---|---|---|
| Non-volatile content (Solids, ISO 3251) | 130°C, 2h | 37 ±1 (PL 4122-37) | % |
| 40 ±2 (PL 4122-40) | % | ||
| 45 ±1 (PL 4122-45) | % | ||
| Viscosity (DIN EN ISO 2431) | 23°C | 40 ±3 s (≈50 mPa·s, PL 4122-37) | s / mPa·s |
| 65 ±5 s (≈80 mPa·s, PL 4122-40) | s / mPa·s | ||
| 40 ±3 s (≈240 mPa·s, PL 4122-45, 6 mm cup) | s / mPa·s | ||
| Density (DIN EN ISO 2811-2) | 23°C | 0.86 ±0.01 (PL 4122-37) | g/cm³ |
| 0.87 ±0.01 (PL 4122-40) | g/cm³ | ||
| 0.88 ±0.01 (PL 4122-45) | g/cm³ | ||
| Shelf life | 23°C | 6 | months |
| Curing time (air cure) | 23°C | Dust dry: 0.25 h; Touch dry: 1 h; Cured: 16 h | h |
| Curing time (oven) | 80°C | 0.5 | h |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Temperature resistance (IEC 60216) | – | 134 | °C |
| Flammability (UL 94, File E211569) | – | V0 | – |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Mandrel bend test (IEC 60464-2) | 3 mm, 0.06 mm film | >180 | ° |
| Cross cut test (DIN EN ISO 2409) | – | GT 0–1 | – |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Permittivity (IEC 60250) | 23°C, 10 kHz | 3.5 | – |
| Dielectric dissipation factor (IEC 60250) | 23°C, 10 kHz | 0.023 | – |
| Dielectric strength (IEC 60464-2) | 23°C | 112 | kV/mm |
| After 23h water immersion | 108 | kV/mm | |
| Volume resistivity (IEC 60464-2) | 23°C | 1 × 10¹⁵ | Ω·cm |
| Tracking resistance (IEC 60112) | – | 600 | CTI |
| Property | Condition | Value | Unit |
|---|---|---|---|
| Water absorption (ISO 62) | 23°C, 24h | 1.5 | % |
| 100°C, 0.5h | 2.5 | % |
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