Specialty Coated Products
Thermally conductive double-sided adhesive sheets
Substrate-free “STC-2000 Series”
The thermally conductive double-sided, substrate-free “STC Series” adhesive sheets have been used for fixing LED light bars in LCD backlight units, heat sinks, LED circuit boards and others. Due to the sheet’s high adhesive strength, LED light bars and heat sinks can simply be pressed into place.
Features
①Excellent thermal conductivity
Due to its adhesive sheet construction, the product firmly attaches to heat sources and heat sinks to ensure a high level of thermal conductivity
②Flame resistant: UL94, V-0（File № E326779）
The sheet is highly resistant to flames and is certified as having met the UL94 standards.
③Strong adhesion just by pressing for ease of operation
The sheet, flexible, thick and double-sided, easily adheres, even to rough and/or curved surfaces.
④Siloxane-free (acrylic material)
The sheet does not contain siloxane, a cause of poor contact.
Product range
| Part number | STC-2125S | STC-2250S | STC-2400S | |
|---|---|---|---|---|
| Thickness | mm | 0.125 | 0.25 | 0.4 |
| Color | White | |||
| Adhesive strength *1 | N/cm | 4.5 | 5.4 | 6.1 |
| Holding power *2 | mm | 0.3 | 0.5 | 0.5 |
| Thermal conductivity *3 | W/m・Ｋ | 0.85 | 0.85 | 0.85 |
| Thermal resistance *4 | ℃・ｃ㎡/W | 1.5 | 2.9 | 4.7 |
| Inflammability (UL94) *5 | － | V-0 | V-0 | V-0 |
| Dielectric strength *6 | AC kV | 1.3 | 3.0 | 4.8 |
| DC kV | 2.0 | 4.0 | 7.0 | |
Measuring conditions:
- ※1
- The adhesive strength was measured using a test piece affixed to 50-um-thick aluminum foil and a piece of SUS stainless steel. The test piece was attached to the piece of SUS and was left in position for 20 minutes under ambient conditions of 23°C/65%RH. The adhesive strength was then measured by pulling the test piece at 90° at a velocity of 300 mm/min.
- ※2
- The holding power was measured using a piece of SUS and a test piece of 25x25 mm affixed to 200-um-thick aluminum foil. The test piece was attached to the piece of SUS and was left in position for 20 minutes at an ambient temperature of 80°C. A 1-kg weight was then attached to the test piece and was left in position for one hour before the test piece was checked for displacement.
- ※3
- Thermal conductivity meter QTM-500 (Kyoto Electronics Manufacturing Co., Ltd.)
- ※4
- The thermal resistance was calculated based on the measured thermal conductivity and the thickness of the tape.
- ※5
- UL94: File No. E326779
- ※6
- The test piece was measured for voltage that could be applied without conduction for one minute.
- ※
- The values in the table above are representative of those typically obtained in Soken tests and can vary in actual applications.
Structure
Applications
・To fix LED light bars
・To fix heat sinks on electrical parts
・To fix LED circuit boards
LED light bar (image)
For fixing heat sinks
“J-77 Series” for joining metals
What is JIS Z1541?
“J-78 Series” for joining plastics
“J-79 Series” for joining at low temperature
“J-10 Series” for special applications
Thermally conductive double-sided adhesive sheets “STC Series”
Double-sided, substrate-free adhesive sheets “STC-2000 Series”
Double-sided, substrate-included adhesive sheets “STC-6000 Series”
Contact us for further information about our specialty coated products.
