Sil-Pad 400 preformed, die-cut
NEDC has been converting thermal products essentially since its advent in 1982. One of the products that is the most enduring is Sil-Pad 400 by Henkel’s Bergquist. This product was actually the original Sil-Pad. This thermal pad was created for products with thin gaps that had the luxury of pressure to create less thermal impedance. This material exhibits great properties with a silicone binder that is reinforced with fiberglass to become a thermally conductive workhorse.
Why use Sil-Pad 400? Properties of Sil-Pad 400 aka TSP 900
Sil-Pad 400’s use of silicone rubber makes it incredibly durable in electronic applications. For example, it has a great flame rating, is non-toxic, and has a continuous temperature range of -76°F to 356°F. In addition to these properties it also exhibits great physical properties, such as tensile strength, and elongation. The fiberglass reinforcement provides great resistance against sharp objects that may be present during the assembly process. It is commonly used to isolate power sources from heat-sinks. Its thermal conductivity of 0.9 W/m-K, while on the lower side in comparison to some other pad products, still pays great dividends in lower thermal impedance due to the 7 and 9 mil thicknesses offered. It is used in power supplies, power semiconductors, automotive electronics, and motor controls. As an economic thermally-conductive insulator, it is commonly used as a go-to product in many other thermal applications as well.
Why do we like Sil-Pad 400 aka SIL PAD TSP 900?
We like Sil-Pad 400 because its such a consistent product. It sounds weird, but I have worked here for 10 years, and I can tell you what Sil-Pad 400 feels like with my eyes closed. We have sent this product to thousands of customers at thousands of applications. It is part of the bedrock of thermal management products because its the ORIGINAL SIL PAD.
Nomenclature of Sil-Pad 400 aka SIL PAD TSP 900
SP400-0.007-00-1212 (no PSA, 9 mil)
SP400-0.007-AC-1212 (PSA, 7mil)
SP400-0.009-AC-1212 (PSA, 9 mil)
SP400-0.009-00-1212 (no PSA, 9 mil)
SIL PAD TSP 900
7403-09AC (Sil Pad 400, 9 mil PSA)
7403-07AC (Sil pad 400, 7 mil PSA)
Is Sil-Pad 400 the same as Sil-Pad 900s?
No, those are different products. Sil-Pad 400 is a different product than Sil-Pad 900S. However, when Henkel Bergquist did their change over to their new system in 2018 to SAP, Sil-Pad 400 became SIL PAD TSP900. This is different than Sil-Pad 900S aka SIL PAD TSP 1600S.
Different electronic components isolated
Different electronic components isolated
More Information/Availability of Sheets/Rolls/Thickness of Sil-Pad 400
The standard color is a refined gray. NEDC commonly die-cuts parts out of these materials in custom non-standard shapes or standard Sil-Pad Configurations. It is available with pressure sensitive-adhesive on one side or both sides. This material is available in certain gauges ranging from .007″ to .030″. Sil-Pad 400 aka TSP 900 is normally available in 12″ x 12″ sheets, or roll form. For more information on Sil-Pad 400, or if you believe you have an application that could utilize it, please contact sales@nedc.com.