Patent ID: 9648743
Date: 2017-05-09
CPC Classifications: H05K

Claim:
1. A multilayer glass ceramic substrate comprising: a plurality of insulating layers composed of glass ceramics; an embedded resistor formed between the insulating layers, wherein the resistor includes scattered microvoids and is comprised of materials containing conductive powders and glass powders, wherein an average size of the scattered microvoids is 3 μm or less, and wherein the average size of the scattered microvoids is 0.92 μm or more; and a first and a second internal conductor, wherein a first end of the embedded resistor is connected to the first internal conductor and a second end of the embedded resistor is connected to the second internal conductor; wherein a softening point of glass powders used for the resistor is expressed by Tr wherein the softening point of glass powders used for the insulating layers is expressed by Tc wherein Tc wherein 750° C.≦Tc