SJ/T 10246-1991 Microwave Ceramic Dielectric Materials Microwave Dielectric Materials A-Ceramics SJ/T10246-1991 Standard download decompression password: www.bzxz.net

Industry Standard of Electronic Industry of the People's Republic of China SJ/T 10243-10246:91
Promulgated on 19910528
Implementation on 1991-12·01
Promulgated by the Ministry of Machinery and Electronics Industry of the People's Republic of China Industry Standard of Electronic Industry of the People's Republic of China Microwave Dielectric Materials
A—Ceramics
Diclectrle materiale for microwaveaCeramk
1 Subject content and scope of application
SJ/T10246—91
This standard specifies the classification, technical requirements and testing methods, inspection rules, packaging, storage and transportation of high dielectric constant, low loss and small dielectric materials. This standard is applicable to A-microwave composite material (hereinafter referred to as dielectric raw materials). 2 Reference standards
G72G5.2 Test method for effective dielectric constant of solid dielectric materials
GB 5b93
Test method for bulk density of piezoelectric ceramic materials
Test method for viscosity of ceramic materials
Test method for linear coefficient of resistance 3 Classification
3.1 Classification criteria are as follows:
Effective dielectric constant, low loss, low signal transmission rate, micro-dielectric materials 3.2 Types, grades, and applicable uses of dielectric materials are shown in Table 1: Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on 199,0528, 12
1991-12-01
Property characteristics
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4 Technical requirements and test methods
4.1 Technical properties
53/110246--91
Frequency
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4.2.1 Requirements
The microwave properties of the same type of dielectric material shall comply with the requirements of Table 1. 4.2.2 Test method
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4.2.2.1 According to (4.2.2.2 The test method specified in GB7265.2 is used to measure the dielectric constant. 4.2.2.3 The rate index coefficient is measured according to the test method specified in Appendix A. 5 Inspection rules 1: 13mm/r t, tx1
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5.1 The production unit shall carry out inspection according to the plan of the length 1 and the number of inspections, and the routine inspection shall be carried out once a year. 5.2 The production unit shall carry out delivery inspection according to Table 1. 5.3 The requirements for the test sample, shape, size and load shall be determined according to the relevant test methods. 13
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5.4 In the test, if all the specifications of the test sample meet the requirements of this standard, the material shall be tested. If there is a sample that does not meet any requirement of the standard, the material shall be tested with the same batch or two batches of materials, and the non-compliant items shall be retested. The material shall be qualified. 6 Marking, packaging, storage and distribution
6. Labeling The product marking shall include a control sound! 5.2 The sealed container in which the product is placed shall have a product mark. 6-3 The product shall be stored in a clean and well-ventilated room. E.4 The product may be transported in a one-time charging mode, which can prevent high current from being absorbed. A] Test Principle
SJ/T10246-91
Appendix A
Test Method for Frequency-Temperature Width Coefficient
(Supplement)
Use the reflected power method system, the schematic diagram of which is shown below: Voltage installation
Teaching word sequence
Ganhai Ding
Adjustment
A2 Test Step
Turntable Adjuster
Carrying Case
Figure A 1 Schematic diagram of the test environment
Temperature control box
The test sample is made into a cylindrical shape with a diameter-to-height ratio of U.3~~(.5), as shown in Figure 1. The test sample is placed in the temperature control box so that the resonance is in a controlled state. The resonance is found on the oscilloscope at the same time. The harmonic source frequency and the test temperature are read from the mathematical frequency counter. The temperature is measured from 200 to 65°C. Each product is tested for 1000 times a group of data. After each test, keep it constant for more than 45 minutes and press The performance excess frequency coefficient Tff
is calculated by the formula, 10-F/℃:
The harmonic service frequency of a dielectric spectrum transmitter, MHx
When the temperature changes T, the change of the resulting excess frequency, MH. Additional Notes
This standard is issued by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard was issued by Shanghai University of Science and Technology in cooperation with the Ministry of Machinery and Electronics Industry's Electronic Standardization Research Institute. The drafters of this standard are Hu Pin and Wang Yugong (Al)
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