Tom
10-08-2002, 07:39 PM
IPC Advanced Study Guide Page Reference: Page 4, Section 1.1
Organic Substrates
Organic substrates are the most commonly used in the construction of printed board interconnection structures. There is a well-established world wide manufacturing base for this type of product. As a result of the large manufacturing base, organic resin system laminates are used in an overwhelming number of printed board designs and thus represent the lowest cost materials among the competing substrate technologies.
Organic materials have intrinsic beneficial electrical properties most notable is a relatively low dielectric constant on average which can be made much lower by the proper choice of resin and reinforcement.
When using Organic Base Materials, the main things that are affected are the XYZ dimensions, the electrical characteristics and the resin.
Inorganic Structures
Inorganic substrates are an alternative to the organic substrates. They have some significant benefits not easily obtained with organic substrates.
Chief among these advantages is excellent thermal properties. Like organic structures there are a number of possible choices available, ceramic, silicon, and enameled metals. The dielectric properties of these materials tend to be higher than organic based materials and they are generally more prone to breakage. Finally, because of the more limited vendor base these structures are normally more expensive
The major benefit of Inorganic Base Materials (Ceramic, Silicon & Enameled Metals) are that they have excellent thermal properties.
Organic Substrates
Organic substrates are the most commonly used in the construction of printed board interconnection structures. There is a well-established world wide manufacturing base for this type of product. As a result of the large manufacturing base, organic resin system laminates are used in an overwhelming number of printed board designs and thus represent the lowest cost materials among the competing substrate technologies.
Organic materials have intrinsic beneficial electrical properties most notable is a relatively low dielectric constant on average which can be made much lower by the proper choice of resin and reinforcement.
When using Organic Base Materials, the main things that are affected are the XYZ dimensions, the electrical characteristics and the resin.
Inorganic Structures
Inorganic substrates are an alternative to the organic substrates. They have some significant benefits not easily obtained with organic substrates.
Chief among these advantages is excellent thermal properties. Like organic structures there are a number of possible choices available, ceramic, silicon, and enameled metals. The dielectric properties of these materials tend to be higher than organic based materials and they are generally more prone to breakage. Finally, because of the more limited vendor base these structures are normally more expensive
The major benefit of Inorganic Base Materials (Ceramic, Silicon & Enameled Metals) are that they have excellent thermal properties.