Thermally Conductive Electrically Insulating Interface Materials

Thermally conductive electrically insulating interface materials produced from glassfibre supported silicone elastomer with ceramic oxide fillers, Thickness range 0.18mm to 0.5mm, Thermal conductivity 0.8 to 5 WmK, Voltage breakdown 1kV to >6kV, Electrically conductive graphite pads, Thickness 0.2mm, Thermal conductivity 3.8WmK

All available as sheets or die cut parts. Pressure sensitive adhesive an option.

Typical Applications

AC/DC power supplies
Audio amplifiers
Automotive
Power generators
UPS

Features and Benefits

Thermal impedance range from 0.13 – 0.6°C-in /watt at 50 psi
High dielectric strength of >6,000 volts AC
Resistant to tears and cut through
UL recognized materials File No. E180840

Thermal Materials

See the specifications of the materials we offer are below.

Warth Materials

Material	K381	K200	K230	K177	K228	PK17	PK23	KK071
Thickness mm	0.381	0.200	0.23	0.177	0.228	0.229	0.229	0.071
Breakdown Voltage 50Hz rms	4000	1000	4500	3500	4500	5500	4500	4500
Approx Thermal Resistance (T0-3 Transistor) ^oC/W	0.2	0.28	0.35	0.45	0.50	0.45	0.35	0.45
Thermal Conductivity Wm⁻¹K⁻¹	3.36	1.3	1.07	0.79	0.79	0.80	1.05	0.25
Hardness Shore Micro	85	80	80	80	80	90	90	90
Tear Resistance kN/m	50	50	75	50	50	125	250	95
Tensile Strength MPa	10	20	30	16	16	35	55	69
Dielectric Constant 1000Hz	3.5	2.5	2.6	2.6	2.6	3.18	3.12	1.9
Elongation %	30	30	35	30	30	20	35	44
Continuous Use Temp. ^oC	-60 to +180	-60 to +180	-60 to +180	-60 to +180	-60 to +180	-20 to +150	-20 to +150	-60 to +180
Colour	White	Light Green	Pink	Grey	Grey	Lilac	Yellow	Yellow

K381 – Ultra high performance silicone elastomer loaded with Boron Nitride. Suitable for military or commercial high power applications. Meets UL 94V-0
K200 – Constructed with coated glass fibre with a specially loaded silicone compound. Conforms to UL 94V-0
K230 – Silicone rubber compound coated onto a layer of glassfibre with highly thermally conductive filler. Suitable for military and Aerospace industries. Conforms to UL 94V-0
K177 and K228 – Silicone rubber compound coated onto a layer of glassfibre. Suitable for military and Aerospace industries. Conforms to UL 94V-0
PK17 and PK23 – Polyester coated Glassfibre Thermally conductive Insulators. Suitable for applications where silicone would cause contamination problems. Conforms to UL 94V-0
KK071 – A combination on Kapton MT and a synthetic resin adhesive on one side. Conforms to UL 94V-0

Laird Tgard Materials

Material	Tgard 210	Tgard 220	Tgard 230	Tgard 20	Tgard 300	Tgard 400
Thickness mm	0.25	0.51	0.76	0.076	0.23	0.23
Breakdown Voltage VAC	6000	10000	20000	9000	6000	5500
Thermal Impedance @100psi ^oC-cm²/W	1.17	2.26	2.28	3.9	2.65	3.82
Thermal Conductivity W/mK	5	5	5	-	-	-
Hardness Shore A	85	80	80	-	75	90
Dielectric Constant 1000Hz	3.32	3.32	3.32	1.8	3.3	3.3
Continuous Use Temp. ^oC	-60 to +200	-60 to +200	-60 to +200	-40 to +150	-60 to +180	-60 to +180
Colour	White	Blue	Green	White	Yellow	Gray
UL Flammability Rating	94 V0	94 V1	-	94 V0	94 V0	94 V0

Material	Tgard 500	Tgard 3000	Tgard 5000	Tgard TNC-5	Tgard K52-1	Tgard K52-2	Tgard K52-3
Thickness mm	0.23	0.13	0.127	0.127	0.051	0.076	0.1
Breakdown Voltage VAC	6000	6000	6000	6000	4200	7800	9000
Thermal Impedance @100psi ^oC-cm²/W	2.13	2.83	2.06	1.94	0.84	1.42	1.94
Thermal Conductivity W/mK	-	-	-	-	-	-	-
Hardness Shore A	80	80	75	-	-	-	-
Dielectric Constant 1000Hz	3.3	3.3	3.4	3.8	1.8	1.8	1.8
Continuous Use Temp. ^oC	-60 to +180	-60 to +180	-60 to +180	-	-60 to +150	-60 to +150	-60 to +150
Colour	Brown	Brown	Tan	Brown	Light Amber	Light Amber	Light Amber
UL Flammability Rating	94 V0	94 V0	94 V0	94 V0 Pending	-	-	-