SE400AB Thermal Gap Filler | 4.0W/mK | TOUSEN

SE400AB
The ​SE400AB Thermal Gap Filler​ is a versatile ​two-part thermal interface material​ engineered to provide reliable thermal management with 4.0 W/m·K conductivity. This high-performance ​dielectric gel​ combines thermal conduction and electrical insulation properties, making it an ideal choice for applications requiring both heat dissipation and component protection. The ​thermal gap filler​ cures into a durable elastomer with Shore 00 hardness of 55±10, maintaining consistent interface thickness while providing excellent shock absorption capabilities.

Technical Specifications and Application Benefits

The ​SE400AB dielectric gel​ demonstrates outstanding performance as a ​thermal interface material​ in various electronic applications. With a rapid curing profile (30-minute tack-free time, 1-hour full cure at 25°C), this ​two-part thermal gap filler​ enables efficient manufacturing processes while ensuring reliable thermal performance. The material's excellent extrusion properties (30±5 g/min flow rate) allow for precise application control, achieving minimum interface thickness of 0.10mm. As a high-quality ​dielectric gel, it provides exceptional electrical insulation with dielectric strength >8 kV/mm and volume resistivity >10¹⁴ Ω·cm. The ​SE400AB thermal interface material​ maintains stable performance across a wide temperature range (-50°C to 150°C) and complies with UL94 V-0 flame rating, RoHS, Halogen-Free, and REACH standards, making it suitable for consumer electronics, LED modules, and automotive applications where balanced thermal performance and reliability are essential.
Quantity:
Free Sample
Product Description

◆ Good thermal conductivity, available in options ranging from 2.0 to 8.0 W/m·K.  
◆ Soft and elastic after curing, maintaining the required thickness and providing shock absorption.  
◆ High electrical insulation, with dielectric strength up to 8 kV/mm.  
◆ Excellent flame resistance, achieving a UL94 V-0 rating.  
◆ Curing time adjustable based on temperature.  
◆ Two-component structure for easy storage.  
◆ Can be precisely controlled for thickness and shape using automated equipment.  
◆ Complies with RoHS, Halogen-Free, and REACH environmental and safety standards.  
 

【Applications】

◆ CPUs and GPUs  
◆ Power Supply Units (PSUs)  
◆ LED Modules  
◆ Engine Control Units (ECUs)  
◆ Gaming Consoles and Laptops  
 
Properties
 
Characteristic Parameter
PropertiesUnitSE400ABTest Method
Thermal ConductivityW/m·K4.0ASTM D5470
Flow Rate(@50cc,90psi)g/min30±5-
Color Before Curing-Part A: White
Part B: Pink
Visual
Densityg/cc3.1Helium Pycnometry
Mix Ratio-1:1-
Color After Curing-PinkVisual
Hardness After CuringShore 0055±10ASTM D2240
Tack-Free Time (@25℃)min30-
Full Cure Time (@25℃)h1-
Full Cure Time (@100℃)min5-
Minimum Interface Thicknessmm0.10-
Shelf Life (@25℃)months6-
Operating Temp.-50 ~ 150-
Dielectric Strength (@AC)kV/mm>8ASTM D149
Dielectric Constant (@1MHz)-7.0ASTM D150
Volume ResistivityΩ·cm>1014ASTM D257
Coefficient of Thermal Expansionppm/K175ASTM E831
Flame Rating-V-0UL94
RoHS-PASSIEC 62321
Halogen-PASSEN 14582
REACH-PASSEN 14372

【Storage & Transportation】

  Store in a well-ventilated, cool, and dry place, away from open flames.
  This product is non-toxic and should be stored and transported as a non-hazardous material.
 

【Packaging】

  ● 50cc ● 400cc
 

【Shelf Life】

   6 months