2550 PI Gold Finger Tape: Reliable Choice for Ultra-High Temperature Protection up to 260℃

Product Overview

2550 PI Gold Finger Tape is a high-performance polyimide tape specifically designed for extreme high-temperature environments. Made with premium PI (polyimide) film and silicone adhesive, it features excellent heat resistance, superior electrical insulation properties, and outstanding mechanical strength, making it an ideal choice for PCB gold finger protection, wave soldering masking, and other high-temperature applications.

Key Advantages

1. Ultra-High Temperature Resistance

Withstands temperatures up to 260℃. After 30 minutes at 260℃, the tape shows no shrinkage, no deformation, and no adhesive residue upon removal. Performance far exceeds ordinary PET-based tapes (180℃), suitable for more demanding high-temperature process environments.

2. Excellent Electrical Insulation

Voltage resistance reaches 5KV, providing good electrical insulation properties, suitable for insulation protection of electronic components, ensuring safe and reliable circuit operation.

3. Superior Mechanical Strength

Tensile strength reaches 135N/25mm, more than twice that of ordinary PET tapes (60N/25mm), with better tensile resistance and dimensional stability,不易断裂 in high-speed automated production.

4. Good Adhesion Performance

Initial tack ≥22# steel ball, holding power ≥72 hours, steel plate peel strength 550±100g/25mm, ensuring stable adhesion even in high-temperature and high-humidity environments, no edge lifting or falling off.

5. Precision Thickness Control

Total product thickness 0.050±0.004mm, with PI film thickness of 0.025±0.002mm and silicone adhesive layer of 0.025±0.002mm. Precision thickness control ensures product performance consistency and stability.

Application Fields

• PCB Gold Finger Protection: Protects gold fingers from oxidation, contamination, or damage during wave soldering, reflow soldering, and other high-temperature processes
• Wave Soldering Masking: Used for local masking of PCB boards to prevent solder contamination of non-welding areas
• Reflow Soldering Protection: Protects sensitive components and areas during high-temperature reflow soldering
• Electronic Component Fixing: Used for temporary fixation of electronic components during SMT processes, does not fall off at high temperatures
• Coil Winding Insulation: Used for winding insulation protection of motors and transformer coils
• Transformer Insulation: Provides reliable electrical insulation protection, voltage resistance 5KV
• Other High-Temperature Insulation: Widely used in electronics, electrical appliances, telecommunications, automotive, aerospace, and other industries

Technical Specifications Comparison

2550 PI vs 3860 PET: How to Choose?

Reasons to Choose 2550 PI:

• Operating temperature exceeds 180℃, requires 260℃ or higher temperature protection
• Requires higher mechanical strength and tensile resistance
• Requires electrical insulation properties (5KV voltage resistance)
• Requires longer holding power (≥72 hours)
• Applied in more demanding industrial environments

Reasons to Choose 3860 PET:

• Operating temperature below 180℃
• Requires higher peel strength (900g/25mm)
• Cost-sensitive applications
• General high-temperature masking protection

Usage Instructions

1. Surface Cleaning: Ensure the surface to be adhered is clean, dry, and free of oil, grease, and dust before use. Wipe with alcohol or specialized cleaner
2. Pressure Application: Apply appropriate pressure during adhesion to ensure full contact between the tape and the surface, improving adhesion效果
3. Test Verification: Small-scale testing is recommended before large-area application to confirm product suitability and process parameters
4. Storage Conditions: Store in an environment at 5-35℃ with relative humidity below 70%, avoid direct sunlight
5. Shelf Life: Best performance within 180 days from production date. Retest expired products before use
6. Test Environment: Standard test conditions are temperature 23±2℃, relative humidity 60±5%

Packaging Specifications

Standard packaging: 10mm/20mm/30mm/50mm width × 33m length/roll. Custom slitting specifications available according to customer requirements, providing personalized size solutions to meet the needs of different application scenarios.

Why Choose 2550 PI?

With its excellent heat resistance (260℃), superior electrical insulation (5KV), and outstanding mechanical strength (135N/25mm), 2550 PI Gold Finger Tape has become the preferred high-temperature masking and insulation material for high-end electronics manufacturers. Whether for PCB manufacturing, SMT processing, transformer insulation, or coil winding, 2550 PI provides professional and reliable solutions.

Contact us now for free samples and technical support!