When an LED module needs a short path to its heat-spreading surface without a bulky mounting layer, H-GT-WH fiberglass thermal conductive tape combines bonding, heat conduction and electrical insulation in one thin white tape. The product page lists 0.095 ± 0.005 mm total thickness, 0.35 W/(m·K) thermal conductivity and 5 kV withstand voltage for high-power LED modules and fixture mounting. Assembly temperature still has to be verified with the actual interfaces and heat sink.
A thin layer keeps the LED heat path compact
H-GT-WH fiberglass thermal conductive tape has a 0.050 ± 0.003 mm face stock and a 0.045 ± 0.003 mm adhesive layer, producing a total thickness of 0.095 ± 0.005 mm. This thin construction helps engineers place a mounting layer between an LED module and its heat-spreading surface where space is limited.
0.35 W/(m·K) provides a traceable material baseline
The catalog thermal conductivity is 0.35 W/(m·K). It is a starting point for material comparison, not a complete prediction of LED assembly cooling. Adhesive wet-out, effective contact area and heat-sink design also shape the thermal path.
5 kV withstand voltage adds an insulation criterion
LED drivers and power-conversion modules can impose thermal and electrical-isolation requirements at the same interface. The listed 5 kV withstand voltage gives designers a traceable insulation specification alongside thermal mounting. The finished assembly still requires evaluation against its geometry, spacing and applicable safety rules.
The adhesive layer combines attachment with interface contact
The catalog lists 0.5 kg/25 mm loop tack, 1.3 kg/25 mm adhesion to polished steel and 24-hour holding power. These values support controlled sample comparisons. The target substrate, cleanliness, lamination pressure and temperature must still be checked on the intended part.
Fourier’s law links thickness, area and heat flow
For one-dimensional steady conduction, the U.S. Department of Energy heat-transfer handbook gives the relationship Qdot = k × A × ΔT / L. Qdot is heat-transfer rate in W, k is thermal conductivity in W/(m·K), A is effective area in m², ΔT is the temperature difference in K and L is conduction thickness in m. The model assumes an approximately one-dimensional, steady path through a homogeneous layer. It omits adhesive contact resistance, voids, pressure, lateral spreading and convection, so catalog values cannot predict LED temperature drop or service life by themselves.
Share the bonding conditions with the LED sample request
For selection, provide the LED module and heat-spreader dimensions, substrate materials, surface condition, operating temperature and insulation requirement. The catalog operating range is -20°C to 120°C; applications near either boundary still need finished-assembly verification.
To discuss roll width, converting or sample conditions, review the fiberglass thermal conductive tape specification and share the LED contact dimensions and operating conditions for a like-for-like comparison.
