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usheenthermal
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Phase Change Thermal Pad
Typical Applications:
SHEEN's SP Series Phase Change Thermal Pads are solid at room temperature and feature self-adhesive properties for easy handling. When the temperature reaches the phase change range of 45–55℃, the pads soften and transition to a liquid state. Delivering wet-out performance comparable to thermal paste, they effectively fill gaps between heat sinks and electronic components. Custom die-cut into any shape per customer requirements, these pads offer convenience, high reliability and straightforward application, with a maximum thermal conductivity of 6.0 W/m·K.
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To request a sample of our Phase Change Thermal Pads or inquire about more product information, please email us at tina@u-sheen.com or request a product sample.
Product Description
◆ Excellent thermal conductivity, with ranging from 1.8 to 6.0 W/m·K.
◆ Low thermal impedance, reaching as low as 0.015 ℃*in²/W at 50psi, ensuring efficient heat transfer.
◆ Excellent wetting properties ensure that there is no risk of spillage after thermal cycling, making them a reliable alternative to thermal grease/thermal paste.
◆ Self-adhesive design for easy application and rework.
◆ Compliant with RoHS, Halogen-Free, and REACH environmental and safety standards.
【Applications】
◆ High-frequency microprocessors
◆ Laptops & desktop computers
◆ Computer servers
◆ Memory modules
◆ Integrated chips (ICs)
◆ LED lighting products
Properties
| Phase Change Thermal Pad Technical Specifications | ||||||
|---|---|---|---|---|---|---|
| Properties | Color | Reinforcement Carrier | Thermal Conductivity | Thermal Impedance (@50psi) | Thickness | Phase Change Temp. |
| Unit | - | - | W/m·K | ℃*in²/W | mm | ℃ |
| SP205A-30 | Gray | - | 3.0 | 0.05 | 0.2 | 45 ~ 55 |
| SP205A-35 | Gray | - | 3.5 | 0.04 | 0.2 | 45 ~ 55 |
| SP205A-40 | Gray | - | 4.0 | 0.03 | 0.2 | 45 ~ 55 |
| SP205A-50 | Gray | - | 5.0 | 0.02 | 0.2 | 45 ~ 55 |
| SP205A-60 | Gray | - | 6.0 | 0.015 | 0.25 | 45 ~ 55 |
| SP205A-AL-40 | Green/Gray | Aluminum Foil | 4.0 | 0.06 | 0.18 | 50 ~ 60 |
| SP350P | Green | Polyimide | 1.8 | 0.4 (30psi) | 0.13 ~ 0.5 | 45 ~ 55 |
| Test Method | Visual | - | ASTM D5470 | ASTM D5470 | ASTM D751 | ASTM D3418 |
【Product Specifications】
Customized according to customer requirements.
【Storage & Transportation】
Store in a well-ventilated, cool, and dry area, away from open flames.
This product is non-toxic and should be stored and transported as a non-hazardous material.
【Packaging】
Customized packaging according to customer requirements.
【Shelf Life】
12 months
About Us
Dongguan Sheen Electronic Technology Co., Ltd.
◆ Founded: 2008
◆ Team: 200 employees
◆ Facility: 20,000㎡
◆ Focus: R&D and production of functional materials
◆ Strengths: Efficient, collaborative team
◆ Achievements: Key supplier to leading global manufacturers
◆ Applications: Telecom, Automotive, Medical, Computing, Industrial , Military
◆ Certifications: ISO9001:2015, ISO14001:2015, IATF16949:2016
Partners
Certifications
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FAQ About Phase Change Thermal Pads
1. What is a phase change thermal pad?
A phase change thermal pad is a solid thermal interface material that softens and changes phase when it reaches its specified phase change temperature. The SP Series is solid at room temperature for easy handling and becomes softer or liquid-like at approximately 45–55°C, allowing it to wet out mating surfaces and fill microscopic gaps between electronic components and heat sinks.
2. How does a phase change thermal pad work?
The SP Series combines the handling convenience of a pre-formed thermal pad with the interface conformity of thermal grease. During assembly, the pad can be positioned like a conventional thermal pad. When the operating temperature reaches its 45–55°C phase change range, the material softens and improves surface contact, helping reduce air gaps and thermal resistance between the heat source and heat sink.
3. What are the thermal conductivity and thermal resistance of SP Series phase change thermal pads?
The SP Series offers thermal conductivity from 1.8 to 6.0 W/m·K. Depending on the grade, thermal impedance can be as low as 0.015 °C·in²/W at 50 psi. For example, SP205A-60 provides 6.0 W/m·K thermal conductivity and a thermal impedance of 0.015 °C·in²/W at 50 psi.
4. What are the advantages of phase change thermal pads over thermal grease?
Phase change thermal pads combine convenient solid-state handling with wet-out performance similar to thermal grease. The SP Series is self-adhesive for easier positioning and rework, and its excellent wetting properties help prevent spillage after thermal cycling. This makes it a practical alternative to thermal grease or thermal paste in applications requiring reliable, clean, and repeatable thermal interface installation.
5. Can SP Series phase change thermal pads be customized?
Yes. SP Series phase change thermal pads can be customized according to application requirements, including shape, dimensions, thickness, and packaging. The pads can be die-cut into custom geometries to match different component and heat sink configurations. Available thicknesses range from 0.13 to 0.5 mm depending on the product grade.
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