Description
Product Overview
SIDA polyimide film tape is synthesized from polyimide film substrate coated with high-performance silicone adhesive through precision coating processes. Our advanced manufacturing ensures consistent thickness tolerance, no scratches, and uniform adhesive distribution. The tape maintains excellent electrical insulation, chemical resistance, and mechanical strength even under continuous high-temperature exposure up to 260°C (short-term up to 400°C).
Key Features:
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Exceptional Thermal Resistance: Continuous operation from -269°C to +260°C, with short-term peaks up to +400°C
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Superior Electrical Insulation: Dielectric strength ≥150 kV/mm (ASTM D149), volume resistivity >10¹⁷ Ω·cm
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Clean Removal: Leaves no adhesive residue after high-temperature exposure
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Chemical & Radiation Resistance: Resists acids, oils, solvents, and radiation exposure
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Flame Retardant: UL 94 V-0 rated for fire safety compliance
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Puncture & Tear Resistant: High tensile strength (≥110 MPa MD) for demanding applications
Technical Data Tables
Standard Product Specifications
| Thickness (μm) | 12.5 | 25 | 40 | 50 | 75 | 100 | 125 | 175 | 200 |
|---|---|---|---|---|---|---|---|---|---|
| Upper Tolerance (μm) | +1 | +2 | +2 | +2 | +3 | +4 | +4 | +5 | +5 |
| Lower Tolerance (μm) | -1 | -1 | -2 | -2 | -3 | -3 | -4 | -5 | -5 |
Physical & Electrical Properties (Typical Values)
| No. | Property | Unit | 25 μm | 40 μm | 50 μm | 75 μm | 100 μm |
|---|---|---|---|---|---|---|---|
| 1 | Density | kg/m³ | 1425 ± 10 | ||||
| 2 | Tensile Strength | MPa | ≥ 165 | ||||
| 3 | Elongation at Break (MD / TD) | % | ≥ 40 | ≥ 50 | |||
| 4 | Thermal Shrinkage (MD / TD, 150°C × 400°C) | % | ≤ 0.35 | ≤ 2.5 | |||
| 5 | AC Breakdown Voltage (48–62 Hz) | V/μm | ≥ 240 | ≥ 200 | ≥ 180 | ≥ 160 | |
| 6 | Surface Resistivity (200°C) | Ω | ≥ 1.0 × 10¹⁴ | ||||
| 7 | Volume Resistivity (200°C) | Ω·m | ≥ 1.0 × 10¹⁰ | ||||
| 8 | Dielectric Constant (48–62 Hz) | — | 3.5 ± 0.4 | ||||
| 9 | Dissipation Factor (48–62 Hz) | — | ≤ 4.0 × 10⁻³ | ||||
| 10 | Temperature Index | — | ≥ 180 | ||||
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Note:The product specifications provided are for reference purposes only. Please refer to the actual product for final specifications. We also offer various sizes and thicknesses to meet your specific needs. For further customization, please contact us.
Application Scenarios
1. Electronics & PCB Manufacturing
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Wave Soldering Protection: Shield gold fingers and sensitive components during soldering processes (peak temp 288°C)
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SMT Reflow Masking: Protect PCB areas during reflow soldering with clean removal
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Flexible Circuit Insulation: Interlayer insulation for FPCs in smartphones and 5G devices
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Battery Manufacturing: Tab bonding and cell wrapping for lithium-ion batteries
2. Electrical Motor & Transformer Insulation
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H-Class Motor Coils: Wrap coil ends and slot liners for high-performance motors
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Transformer Phase Insulation: Barrier insulation in toroidal and bobbin-wound transformers
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High-Voltage Cable Wrapping: Interlayer insulation for traction motor coils
3. Aerospace & Defense
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Aircraft Wiring: Insulation for critical flight control systems operating at extreme altitudes
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Satellite Components: Thermal protection and electrical insulation for spacecraft electronics
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Avionics Shielding: EMI/RFI protection in harsh environmental conditions
4. Automotive Industry
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EV Battery Packs: Thermal management and electrical isolation for battery modules
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Engine Sensors: Protect wiring harnesses in high-heat engine compartments (up to 200°C)
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Seat Heater Elements: Insulation for heating elements and sensor coils
5. Industrial Manufacturing
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Powder Coating Masking: High-temperature masking during industrial coating processes
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3D Printer Bed Adhesion: Heat-resistant surface for FDM/FFF 3D printing platforms
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Sandblasting Protection: Masking sensitive surfaces during abrasive blasting
Testing Standards & Certifications
International Compliance Standards
| Standard Number | Description | SIDA Compliance |
|---|---|---|
| ASTM D5213 | Standard Specification for Polyimide Resin Film | Type II, Class A |
| UL 510 | Electrical Insulating Tape Safety Standard | Flame Retardant (File E20780) |
| IEC 60243-1 | Dielectric Strength of Solid Insulating Materials | Certified ≥150 kV/mm |
| MIL-P-46112B | Military Specification for Polyimide Film | Type 1, Item A |
| IPC-4202/1 | Flexible Base Dielectric Materials for PCBs | Compliant |
| ASTM D149 | Dielectric Breakdown Voltage Test | Pass 6.5-14 kV |
| CSA C22.2 | Canadian Electrical Certification | File LR94980 |
| RoHS/REACH | Environmental Hazardous Substances | Full Compliance |
Quality Assurance Testing
Our SynLab® testing facility performs:
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Thermal Aging Tests: 10,000+ hours at 260°C per UL 746B
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Dielectric Breakdown: IEC 60243-1 high-voltage ramp testing
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Adhesion Retention: ASTM D3330 after thermal cycling
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Chemical Exposure: Resistance to acids, bases, and solvents per ASTM D543
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Dimensional Stability: Precision measurement under thermal stress
Frequently Asked Questions (FAQs)
Q1: What is the difference between polyimide tape and PET film tape?
A: Polyimide tape withstands continuous temperatures up to 260°C (400°C short-term) with superior dielectric strength (≥150 kV/mm). PET film tape is limited to 130-150°C and lower voltage applications. Polyimide is ideal for high-reliability applications like aerospace and EV batteries, while PET film suits general insulation at lower temperatures. Both are available from SIDA for different performance requirements.
Q2: Is SIDA polyimide tape UL certified?
A: Yes. Our SIDA-PI series meets UL 510 for electrical insulation and UL 94 V-0 for flame retardancy. UL File Number: E20780 (Intertape® 4118 equivalent). We provide certificates of compliance with each shipment.
Q3: Can this tape be used for 3D printer beds?
A: Absolutely. The SIDA-PI-2540 (40μm) model is ideal for 3D printing platforms, providing excellent first-layer adhesion at 60-100°C and easy removal without residue. It withstands repeated heating cycles up to 260°C.
Q4: What adhesive type is used, and will it leave residue?
A: We use high-performance silicone pressure-sensitive adhesive cured for high-temperature stability. When applied correctly and removed within temperature ratings, it leaves zero adhesive residue, verified by ASTM D3330 testing.
Q5: What is the shelf life and storage requirements?
A: 2-year shelf life when stored in original packaging at 23°C ±5°C, 50% ±10% RH. Store suspended in boxes away from direct sunlight, heat sources, and humidity. Do not erect rolls vertically.
Q6: Can you provide custom widths and die-cut shapes?
A: Yes. We offer precision slitting from 5mm to 1040mm width, and custom die-cutting services for battery tabs, PCB gold finger masks, and specialized insulation components. Minimum order quantities apply for custom sizes.
Q7: How does SIDA compare to 3M or DuPont Kapton® tape?
A: SIDA polyimide tape meets the same ASTM D5213 and UL standards as major brands, with equivalent thermal and electrical performance. We offer competitive pricing, shorter lead times, and flexible customization options for OEM customers, while maintaining ±2.5μm coating precision.