Technical data of Type DB-404 electronic glass

SJ/T 10588.3-1994 Technical data of DB-404 electronic glass SJ/T10588.3-1994 Standard download decompression password: www.bzxz.net

Electronic Industry Standard of the People's Republic of China
Technical.data of type DB-404 electronic glass
Technical.data of type DB-404 electronicie giass Subject content and scope of application
This standard specifies the chemical composition and physical and chemical performance indicators of DB-404 electronic glass. SJ/T.10588:3-94
Replaces SJ674-83
This standard applies to glass materials for core columns and exhaust pipes for electron tubes, lighting lamps and cathode ray tubes. Reference standards
GB9000 Standard method for chemical analysis of electronic glass GB9622 Test method for physical and chemical properties of electronic glass 3 Technical requirements
3.1 Chemical composition is shown in Table 1.
Weight percentage
55.5±1.0
Note: 1) Fe:O, as an impurity control, is not included in the percentage composition. Physical and chemical performance indicators are shown in Table 2.
Test method approved by the Ministry of Electronics Industry of the People's Republic of China on August 8, 1994
GB9000.12
GB9000.10
GB9000.14
Implementation on December 1, 1994
Indicator name
SJ/T10588.3-94
Average linear thermal expansion coefficient a in the range of 0 to 300℃Density
Softening point
Annealing point
Strain point
Dielectric loss tangent value tgg×10 at a frequency of 6MHz and a temperature of 20℃Temperature when the volume resistivity is 100Ma·cm (Tx—100)Thermal stability
Water resistance and chemical stability level
Additional remarks:
This standard is under the jurisdiction of the Standardization Research Institute of the Ministry of Electronics Industry. 1/℃
This standard was drafted by Factory 774 and the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Lin Jingbo, Liu Chengjun, Wei Guangyun and Tang Yingxiang. This standard was first issued in 1973 and revised for the second time in August 1994. Refers towww.bzxz.net
(91.0±2.0)×10-7
3.055±0.030
615±10
450±10
400±10
≥325
≥105
Test method
GB9622.11
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