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99.5% BeO Ceramic Substrate Manufacturer/High Thermal Low Dielectric Beryllium Ceramic Substrate For RF Microwave Package
Detail Information of technical parameter
Color:
White
Density:
2.88 G/cm3
Grain Size:
11~18 mm
Hardness:
Rockwell 45N 60
Gas Impenetrability:
10-8 Cc/sec He
Thermal Conductivity:
>275~285 W/m•K (at RT)
Coeffcient Of Thermal Expansion:
7.98(RT~500℃)
Specifc Heat:
0.25 Cal/g°C
Flexural Strength (MOR):
196 MPa
Dielectric Constant:
6.6 1 MHz (at RT)
Dissipation Factor:
3.0×10-4 10 GHz (at RT)
Volume Resistivity:
2.5×10 15 Ω-cm (at RT)
Feature 1:
High Thermal
Feature 2:
Low Dielectric Constant
LTCC low temperature co-fired ceramics for high frequency Microwave Filter,sensor,Vacuum Electronics
LTCC (low temperature co-fired ceramics) represents a multilayer ceramic substrate that is co-fired with a low resistance internal circuit made of a metal such as Ag or Cu, at temperatures lower than the melting points of this metal (less than 1,000°C). It can be defined as a way to produce multilayer circuits with the help of single tapes, which are used to apply conductive, dielectric, and/or resistive pastes.
LTCC is a multilayer ceramic technology with excellent dimensional accuracy, high density, high frequency, and reliability offering excellent RF and microwave performance characteristics. Its low sintering temperature (approximately 900°C) allows co-firing with highly conductive metals such as silver and gold.
for moderate firing temperatures. The LTCC process is similar to the thick film hybrid process employed for multilayer ceramic capacitors and chip inductors. The moderate firing temperature level below 900 °C is achieved by mixing alumina and glass as the main ingredients of the ceramic tape, the so-called green sheets. This permits the co-firing with highly conductive material (silver) for the electrodes.LTCC also supports the creation of buried components and thus contributes to miniaturization.
LTCC Design Rules
Material system available:
Ferro A6-M– gold, mixed conductor
Duppont 951 — gold, all silver plated
NL-F1 — gold, mixed conductor
NL-D1 — gold, all silver plated
NL-D2 — Full silver plated
LTCC design rule size





