3M 1218
Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other
Main features
- 180 deg C Continuous Operation
- Thin High-Temperature Insulation
- Flexible-Circuit Cover Layer
Product Description
3M Polyimide Film Electrical Tape 1218 combines a 0.025 mm polyimide film backing with a non-corrosive acrylic PSA in a 0.080 mm tape for high-temperature electrical insulation. Rated under its UL listing for continuous operation up to 180 deg C, it provides minimum dielectric breakdown of 5500 V; insulation resistance is at least 1 x 10^12 ohm by ASTM D1000 at 23 deg C. The amber tape wraps coils, capacitors, transformers, wire harnesses, and leads, and also serves as a cover layer for flexible printed circuits or a solder mask during printed circuit board assembly.
Key features
- 180 deg C operation: The tape is designed for continuous operation not exceeding 180 deg C under its UL listing.
- Thin insulation profile: The construction combines 0.025 mm polyimide backing with 0.080 mm total tape thickness.
- No-preparation adhesive: The acrylic pressure-sensitive adhesive requires no heat, moisture, or solvent preparation for application.
Applications
Applications include wrapping coils, capacitors, transformers, wire harnesses, and leads; solder masking; and cover-layer use on flexible printed circuits.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Thermal Properties
Mechanical Properties
Electrical Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Amber | - | Visual |
| Backing | Polyimide film | - | As supplied |
| Adhesive | Acrylic | - | Non-corrosive pressure-sensitive adhesive |
| Backing thickness | 1 / 0.025 | mil / mm | Nominal |
| Total thickness | 3.15 +/- 0.2 / 0.080 +/- 0.005 | mil / mm | ASTM D1000 at 23 deg C |
| Shelf life | 5 | years | From manufacture; 10 to 27 deg C and less than 75% RH |
Final-state / after-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Continuous operating temperature | 180 | deg C | Maximum under UL listing |
| Dielectric breakdown | 5500 | V | Minimum; ASTM D1000 at 23 deg C |
| Insulation resistance | 1 x 10^12 | ohm | Minimum; ASTM D1000 at 23 deg C |
| Electrolytic corrosion factor | 1.0 | - | 3M ETM-54001; 1.0 equals no observed corrosion |
| Adhesion to steel | 14 / 1.5 | oz/in / N/cm | Minimum; ASTM D1000 at 23 deg C |
| Breaking strength | 20 / 35 | lb/in / N/cm | Minimum; ASTM D1000 at 23 deg C |
| Elongation | 50 | % | Minimum; ASTM D1000 at 23 deg C |
| Flame retardancy | Pass | - | UL 510A |
