TekNational, Inc.
Tek-Sil® SU Materials
EXCELLENT PERFORMANCE
  • Versatile sheets make reliable and complete physical contact.
  • Lower thermal resistance.
  • Flame retardancy of UL specification 94V-0 equivalent.

Tek-Sil® SU is an improved formulation of silicone and alumina fillers which offers a low cost solution to many heat problems.  With thermal conductivity measured close to that of our best performing "SB-08".  As "SU" is not reinforced with fiberglass, PSA is not available.  Teknational die cuts "SU" in many standard sizes.  This material is also sold in roll form 3.33" (85mm) wide.  SU-a and SU-b are highly conformable/thermally conductive silicone material, 2.2 watt/m-K and 3.9 watt/m-K (non electrically conductive).

Typical Product Properties

Tek-Sil® SU-a
ItemUnit20SU-a30SU-a45SU-aTest Method
Thicknessmm0.200.300.45-
Thermal ConductivityW/m-K2.22.22.2ASTM D5470
Thermal ResistanceºC·inch²/Watt0.110.220.26Test Method(1)
Flame Retardancy-94 V-0(2)94 V-0(2)94 V-0(2)UL 94 Standard
(1) FTM P-3010 which gives ASTM D5470 equivalent value (compression force: 2 MPa).
(2) Recognized.
Tek-Sil® SU-b
ItemUnit20SU-b30SU-b45SU-bTest Method
Thicknessmm0.200.300.45-
Thermal ConductivityW/m-K3.93.93.9ASTM D5470
Thermal ResistanceºC·inch²/Watt0.090.170.20Test Method(1)
Flame Retardancy-94 V-0(2)94 V-0(2)94 V-0(2)UL 94 Standard
(1) FTM P-3010 which gives ASTM D5470 equivalent value (compression force: 2 MPa).
(2) Equivalent.

Typical Material Properties

Tek-Sil® SU-a & SU-b
ItemUnitSU-aSU-bTest Method
Color-GrayGrayVisual
Specific Gravity-2.72.6JIS K 6220 / ASTM D792
HardnessType A8165JIS K 6249 (ASTM D2240)
Tensile StrengthMPa32.3JIS K 6251 (#2 Die) / ASTM D412
Elogation%85100JIS K 6251 (#2 Die) / ASTM D412
Tear ResistanceKN/m7.55.5JIS K 6252 (Angle) / ASTM D624
Volume ResistivityMOhm·cmx10e7x10e6JIS K 6249 / ASTM D257
Withstand Voltage (0.2mmT)KV/minute39JIS K 6249 (AC 60Hz) / ASTM D149
Withstand Voltage (0.3mmT)KV/minute9-JIS K 6249 (AC 60Hz) / ASTM D149
Dielectric Constant50 Hz6.74.7JIS K6911/ASTM D150 equivalent
Dielectric Constant10e3 Hz6.44.7JIS K6911/ASTM D150 equivalent
Dielectric Constant10e6 Hz5.34.8JIS K6911/ASTM D150 equivalent
Dielectric Dissipation Factor50 Hz0.0280.002JIS K6911/ASTM D150 equivalent
Dielectric Dissipation Factor10e3 Hz0.0220.001JIS K6911/ASTM D150 equivalent
Dielectric Dissipation Factor10e6 Hz0.0100.001JIS K6911/ASTM D150 equivalent
Max Operating TemperatureºC-60 to +180-60 to +180-