Ref. RD-514C · Polyimide 300 °C
Self-adhesive label made of white polyimide film with high-temperature acrylic adhesive and silicone-coated paper liner. Withstands up to 300 °C, including direct contact with molten solder, and resists numerous process solvents and chemicals. Available in two film calipers, 25 and 50 µm.
Ref. RD-514C — Self-adhesive polyimide
Acrylic adhesive · Up to 300 °C · Electronics and PCB
300 °C for 15 minutes
Thermal resistance verified across three steps: 300 °C for 15 min, 250 °C for 90 min and 200 °C for 240 h.
Withstands molten solder
Withstands direct contact with molten solder, which allows labelling the underside of printed circuit boards.
High-temperature acrylic adhesive
Adheres to stainless steel, aluminium, solder-masked boards, polyimide film and powder-coated surfaces. Minimum application temperature: 18 °C.
Two film calipers
25 µm film (75 µm total caliper with liner) and 50 µm film (100 µm total caliper). Formats and roll widths on request.
The 300 °C figure is for short-duration resistance, not continuous service temperature. Always validate with a sample under your real process conditions before starting series production.
Why this material
Why a self-adhesive polyimide for electronics, PCBs and processes with chemical contact
The label has to survive the soldering process
In printed circuit board assembly, the label goes through the thermal process together with the board. The Ref. RD-514C withstands direct contact with molten solder, so it can be placed on the underside of the board and remain legible afterwards. That is the difference between identifying the board before the process or having to relabel it once it comes out.
Self-adhesive label, not a tag: adhesion directly to the part
Unlike a mechanically fixed tag, this reference carries a high-temperature acrylic adhesive and is applied directly to the surface: stainless steel, aluminium, solder-masked board, polyimide film or powder coating. Adhesion is measured by surface and given below in N/cm.
The values given are typical values, subject to change without notice. Verify with a sample before starting production.
Key advantage
300 °C and chemical resistance
Beyond its thermal margin, the Ref. RD-514C resists hot water, transformer, engine and hydraulic oils, diesel, hexane, heptane, white spirit, aviation kerosene and gasoline, antifreeze and detergent solutions. Twelve media tested, all with no effect on adhesion or on the label surface.
Short-duration resistance at 300 °C. For continuous service at high temperature, tell us the specific conditions of your process.
Technical properties
Data for the two calipers
| Parameter | Version 25 | Version 50 |
|---|---|---|
| Film caliper | 25 µm | 50 µm |
| Total caliper (with liner) | 75 µm | 100 µm |
| Facestock colour | White | White |
| Facestock material | White polyimide film | |
| Adhesive | High-temperature acrylic | |
| Liner | Silicone-coated paper | |
| Printing | Thermal transfer with high-performance resin ribbon | |
| Minimum application temperature | 18 °C (room temperature) | |
| Storage conditions | 20 °C / 50% RH | |
Maximum thermal resistance
300 °C
For 15 minutes, under short-duration exposure. It withstands 250 °C for 90 minutes and 200 °C for 240 hours. Covers the usual thermal cycles of electronic assembly and finishing treatments.
Adhesion to aluminium
3.0 N/cm
The highest value in the adhesion table (peel 180°, 10-minute dwell time). On stainless steel and powder coating, 2.5 N/cm; on polyimide film, 2.0 N/cm.
Chemical media tested
12
Oils, fuels, solvents, antifreeze, hot water and detergent. All twelve show no effect on adhesion or on the label surface.
Adhesion by surface — peel 180°, 10-minute dwell time
| Surface | Value | Unit |
|---|---|---|
| Stainless steel | 2.5 | N/cm |
| Aluminium | 3.0 | N/cm |
| Solder-masked printed circuit board | 1.5 | N/cm |
| Polyimide film | 2.0 | N/cm |
| Powder-coated surface | 2.5 | N/cm |
Thermal resistance
| Temperature | Duration | Result |
|---|---|---|
| 300 °C | 15 minutes | Withstands |
| 250 °C | 90 minutes | Withstands |
| 200 °C | 240 hours | Withstands |
Performance by usage criterion
Excellent
Soldering processes
Withstands direct contact with molten solder and 300 °C for 15 minutes. Designed for labelling the underside of printed circuit boards and surface-mount technology (SMT).
Excellent
Oils, fuels and solvents
Twelve media tested with no effect: water at 95 °C, transformer, engine and hydraulic oils, diesel, hexane, heptane, white spirit, aviation kerosene and gasoline, antifreeze and detergent.
Limited
Cold application
The minimum application temperature is 18 °C. Below that value the acrylic adhesive does not develop the stated adhesion: application must be done at room temperature.
To be validated
Compatibility with the flux
When labelling printed circuit boards, it is worth checking the compatibility of the ribbon ink with the flux used in soldering. Tell us which one you use and we will verify it with a sample.
Chemical resistance
Twelve media tested
| Medium | Duration | Result |
|---|---|---|
| Water at 95 °C | 8 h | No effect |
| Transformer oil at 23 °C | 24 h | No effect |
| Diesel at 23 °C | 24 h | No effect |
| SAE 30 engine oil at 23 °C | 24 h | No effect |
| Hydraulic oil (Dexron II) at 23 °C | 24 h | No effect |
| Hexane at 23 °C | 24 h | No effect |
| Heptane at 23 °C | 16 h | No effect |
| White spirit at 23 °C | 1 h | No effect |
| Jet A1 aviation kerosene (ASTM D1655) at 23 °C | 24 h | No effect |
| Avgas 100LL aviation gasoline (ASTM D910) at 23 °C | 24 h | No effect |
| Antifreeze (1:1 ethylene glycol / water) at 23 °C | 24 h | No effect |
| Detergent solution (3% in water) at 23 °C | 8 h | No effect |
Test method: label applied to a stainless steel plate and immersed in the medium. “No effect” means that adhesion to the plate is unaffected and that the label surface remains intact.
Printability
Thermal transfer with resin ribbon
Ribbon type
High-performance resin
For example, the resin ribbon Armor AXR 7+. Results with ribbons of a different formulation are not guaranteed without prior testing. If you need the compatible ribbon, let us know — we supply that too.
Print parameters
2 to 4 ips · high energy
Low speed, 2 to 4 inches per second, with a high energy setting. Valid at both 203 and 300 dpi. The resulting print is suitable for barcodes and scuff-resistant.
To check for PCB
Compatibility with the flux
When labelling printed circuit boards, it is worth checking the compatibility of the ribbon ink with the flux used in soldering. Tell us which one you use and we will validate it with a sample before series production.
Usage recommendations
- —Die-cutting: rotary die-cutting is recommended. Avoid high winding tension.
- —Handling: avoid contact with the label surface. Keep the process environment clean and free of dust.
- —Packaging: keep reels and finished labels in plastic bags.
- —Apply at room temperature (minimum 18 °C) and check adhesion under the real conditions of the application before series production.
Users should run their own trials under the real conditions of application. The values given are typical values, subject to change without notice.
Multi-layer composition
How it's built
Version 25 (25 µm film): 75 µm total caliper. Version 50 (50 µm film): 100 µm total caliper. White facestock in both versions.
Which caliper do you need — 25 or 50 µm?
Tell us the surface to be labelled, the temperature and duration of the thermal process, the application equipment and the label format. We'll confirm which caliper is right for your project and how to request a sample.
Quick comparison
Technical documentation
For more technical detail, the full technical data sheet is available as a PDF.
Download PDF specificationSupply details
Free technical sample
We send it before production, so you can validate it in your real process.
Two film calipers
25 µm (75 µm total caliper) and 50 µm (100 µm total caliper).
Formats on request
Label sizes, roll widths and die-cutting according to your process.
Shipping across Europe
We supply across the whole European Union.
Frequently asked questions
Does it withstand wave or reflow soldering?
Yes. The Ref. RD-514C withstands direct contact with molten solder and resists 300 °C for 15 minutes, 250 °C for 90 minutes and 200 °C for 240 hours. That is why it is used on the underside of printed circuit boards.
Which ribbon should I use?
A high-performance resin ribbon, for example the Armor AXR 7+. We recommend printing at low speed (2 to 4 inches per second) with a high energy setting, at both 203 and 300 dpi. Results with ribbons of a different formulation are not guaranteed without prior testing.
Which caliper should I choose, 25 or 50 µm?
The 25 µm film version has a total caliper of 75 µm with liner; the 50 µm version, 100 µm. Tell us the surface to be labelled, the process and the application equipment and we will confirm the right caliper for you.
Can it be applied cold?
No. The minimum application temperature is 18 °C, that is, room temperature. Below that value the acrylic adhesive does not develop the stated adhesion.
What is the shelf life of the material?
The data for this reference does not include a shelf-life figure, so we cannot state one here: it is confirmed on request. Storage conditions are 20 °C and 50% relative humidity.
Is it suitable for food contact?
We have no food-contact suitability data for this reference, so we cannot confirm it. If your application requires it, let us know and we will propose a material with that documentation.
Need to validate this material?
Tell us the surface to be labelled, the temperature and duration of the thermal process, and the label format you need. We'll confirm which caliper (25 or 50 µm) is right for your project and how to request a sample.
Response within 24 hours.
- Technical advice with no obligation.
- Response within 24 hours.
- Material samples when the project requires them.