1322 Conformal Coating is a single-component, solvent-based polyurethane coating material designed to provide reliable insulation and protection for assembled printed circuit boards (PCBs). This environmentally friendly coating is formulated without aromatic solvents (such as benzene, xylene, and C9 aromatic compounds) and contains no free isocyanates or isocyanate radicals, making it a safer choice for operators and the environment.

Ideal for flexible circuit boards and demanding electronic applications, 1322 offers excellent aging resistance, moisture protection, and anti-condensation properties that effectively prevent electrochemical corrosion and electronic migration.

Technical Specifications

Feature	Specification
Base Material	Modified polyurethane resin (UR)
Color / Appearance	Wine red, transparent
Solid Content (1h/125°C)	40±2%
Viscosity (20°C, DIN4 cup)	43±2 seconds
Density (20°C)	1.00±0.02 g/cm³
Temperature Range	-40°C to +140°C
Shelf Life	6 months (sealed, 25-28°C)

Performance Advantages

Superior Electrical Insulation & Protection

Provides exceptional dielectric strength and insulation resistance, ensuring long-term reliability for sensitive electronics.

Outstanding Environmental & Moisture Resistance

85/85 Test: Passed (85°C, 85% RH, 3 days)
Humidity Insulation Resistance: Passed (65°C, 90% RH)
Thermal Shock: Passed (-65°C to +125°C)
Anti-Condensation Resistance: Passed (40°C, 100% RH)
Flexibility: Passed IPC-CC-830B requirements - ideal for flexible and rigid PCBs

High Reliability in Harsh Conditions

Excellent aging resistance
Superior anti-corrosion properties (electrochemical and electronic migration)
Prevents moisture condensation and related electrical failures
Suitable for automotive, aerospace, industrial, and consumer electronics applications

Applications

1322 conformal coating is ideal for protecting PCBs in:

Automotive Electronics - ECU, sensors, control modules
Aerospace & Defense - High-reliability circuit boards
Industrial Control - PLC, power supplies, motor drives
Consumer Electronics - Smart devices, home appliances
LED Lighting - Driver and control board protection
Medical Electronics - Diagnostic equipment, monitors

Application Guidelines

Coating Methods: 1322 can be applied using dip coating, brush coating, spray coating (manual or automated), and selective coating equipment.

Coating Thickness: Approximately 50 µm wet film (equivalent to 25-30 µm dry film)

Industry Keywords

Conformal Coating PCB Protection Polyurethane Coating Solvent-Based Coating Automotive Electronics Aerospace Coating Industrial Control Circuit Board Insulation Electronic Coating Moisture Protection Anti-Corrosion Coating Selective Coating High Reliability Coating IPC-CC-830 Lead-Free RoHS Compliant Coating Material Electronics Manufacturing SMT Coating Flexible Circuit Protection

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