|
US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 39975-2021: Aluminum nitride ceramic dissipate heat substrates
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 39975-2021 | English | 189 |
Add to Cart
|
3 days [Need to translate]
|
Aluminum nitride ceramic dissipate heat substrates
| Valid |
GB/T 39975-2021
|
PDF similar to GB/T 39975-2021
Basic data | Standard ID | GB/T 39975-2021 (GB/T39975-2021) | | Description (Translated English) | Aluminum nitride ceramic dissipate heat substrates | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | L92 | | Word Count Estimation | 10,183 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 39975-2021: Aluminum nitride ceramic dissipate heat substrates---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Aluminum nitride ceramic heat sink substrate)
ICS 31.220
L92
National Standards of People's Republic of China
Aluminum nitride ceramic heat sink substrate
Released on 2021-05-21
2021-12-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Building Materials Federation.
This standard is under the jurisdiction of the National Industrial Ceramics Standardization Technical Committee (SAC/TC194).
Drafting organizations of this standard. Shandong Industrial Ceramics Research and Design Institute Co., Ltd., China Building Materials Inspection and Certification Group Zibo Co., Ltd., China
Building Materials Inspection and Certification Group Co., Ltd., Sinoma Jiangxi Electric Porcelain Electric Co., Ltd., Shandong Guoci Functional Materials Co., Ltd., Sinoma
High-tech Materials Co., Ltd.
The main drafters of this standard. Zhao Xiaobo, Bao Xiaoyun, Wang Yubao, Zhang Yongcui, Ding Xiaowei, Wang Shengjie, Chen Xuejiang, Wu Ping, Wang Kun, Li Xiaoyong,
Song Tao, Zhang Dajun, Wan Detian, Pan Guangjun, Sang Jianhua.
Aluminum nitride ceramic heat sink substrate
1 Scope
This standard specifies the classification and marking, technical requirements, test methods, inspection rules, marking, packaging, and transportation of aluminum nitride ceramic heat sink substrates.
And storage.
This standard applies to aluminum nitride ceramic heat sink substrates used in LED, electronic packaging and other fields. Aluminum nitride ceramic heat sink substrates for other uses are also
Refer to this standard.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document.
GB/T 2828.1 Sampling inspection procedure by attributes Part 1.Batch inspection sampling plan retrieved by acceptance quality limit (AQL)
GB/T 5593 Structural ceramic materials for electronic components
GB/T 5594.4 Electronic component structural ceramic material performance test method Part 4.Dielectric constant and dielectric loss tangent
Value test method
GB/T 5594.5 Electronic component structural ceramic material performance test method Volume resistivity test method
GB/T 6062 Product Geometric Technical Specification (GPS) Surface structure contour method contact (stylus) type instrument nominal characteristics
GB/T 6569 Test method for bending strength of fine ceramics
GB/T 9531.1-1988 Technical conditions for electronic ceramic parts
GB/T 14619-2013 Alumina ceramic substrates for thick film integrated circuits
GB/T 16535 Test method for thermal expansion coefficient of fine ceramic wire ejector method
GB/T 22588 flash method to measure thermal diffusivity or thermal conductivity
GB/T 25995 Test method for density and apparent porosity of fine ceramics
GB/T 30859 Test method for warpage and waviness of silicon wafers for solar cells
3 Classification and marking
3.1 Classification
3.1.1 According to the size deviation, it is divided into three categories. Ⅰ, Ⅱ, and Ⅲ (see Table 1).
3.1.2 Divided into two types A and B according to thermal conductivity (see Table 2).
3.2 Marking
The aluminum nitride ceramic heat sink substrate is marked with 3 sets of symbols, and each set of symbols is separated by a space. The following expression should be used.
AN □ □
Note. If the product type agreed by the supplier and the buyer does not fall within the scope of the classification specified in this standard, it can be indicated by "X".
Example.
ANⅠ A represents aluminum nitride ceramic heat sink substrates with dimensional deviation classified as Class I and thermal conductivity classified as Class A.
4 Technical requirements
4.1 Appearance
The appearance of the substrate should be free of defects such as cracks, spots, and defects.
4.2 Dimensional deviation and geometric tolerance
The minimum length and width deviation of the substrate is 0.05mm, and the minimum thickness deviation is 0.025mm. The size deviation and the geometric tolerance should be consistent.
Conform to the provisions of Table 1.
Table 1 Dimensional deviation and geometric tolerance
4.3 Performance indicators
Performance indicators should meet the requirements of Table 2.
Table 2 Performance Index
5 Test method
5.1 Appearance
Visually inspect the appearance under appropriate light, and detect cracks after immersion in the color solution in accordance with the requirements of 6.5.8 in GB/T 14619-2013.
5.2 Dimensional deviation and geometric tolerance
5.2.1 Use a vernier caliper with an accuracy of 0.02mm or other measuring instruments that can ensure the accuracy of the measurement for the length and width of the substrate
measuring.
5.2.2 The thickness is measured with a micrometer with an accuracy of 0.01mm or other measuring instruments that can ensure the accuracy of the measurement, with the least measuring points
It should be 1mm from the edge of the substrate.
5.2.3 The degree of warpage shall be tested according to the method specified in GB/T 30859.
5.2.4 The roughness of the working surface shall be tested in accordance with the method specified in GB/T 6062.
5.3 Bulk density, apparent porosity
Test according to the method specified in GB/T 25995.
5.4 Bending strength
The size of the sample section is (40mm±0.2mm)×(10mm±0.2mm), the span is 30mm±0.1mm, according to GB/T 6569
The prescribed method is tested.
5.5 Thermal conductivity
Test according to the method specified in GB/T 22588.
5.6 Coefficient of linear thermal expansion
Test according to the method specified in GB/T 16535.
5.7 Volume resistivity
Test according to the method specified in GB/T 5594.5.
5.8 Breakdown strength
Test according to the method specified in GB/T 5593.
5.9 Dielectric constant and dielectric loss tangent
Test according to the method specified in GB/T 5594.4.
6 Inspection rules
6.1 Batch
200 ceramic substrates produced continuously under basically the same conditions with the same formula and submitted for inspection at the same time constitute an inspection lot.
When it reaches.200 pieces, it can still be used as an inspection lot.
6.2 Inspection classification
Product inspection is divided into factory inspection and type inspection.
6.3 Factory inspection
The inspection items of the factory inspection include product appearance, bulk density, apparent porosity and all inspection items specified in Table 1.Each batch of products is
Carry out the factory inspection according to the one-time sampling plan in GB/T 2828.1.The inspection plan is shown in Table 3 and Table 4.If necessary, the reception quality limit can also be
It shall be negotiated and stipulated by both parties.
Table 3 Factory inspection plan for appearance, dimensional tolerances and geometric tolerances
6.4 Type inspection
The inspection items for type inspection include all the inspection items specified in Chapter 4.The samples for type inspection are directly from the products that have passed the factory inspection.
Select from the product or make it according to the inspection requirements, in accordance with the provisions of Table 5.Type inspection should be done in one of the following situations.
a) During the first batch of production;
b) Inspect once a year during normal production;
c) When changes in raw materials or production processes may affect product quality;
d) When production is stopped for half a year or more, when production is resumed;
e) When there is a big difference between the factory inspection result and the last type inspection result.
Table 5 Type inspection
6.5 Judgment rules
6.5.1 Factory inspection judgment
If all items of the factory inspection meet the requirements of Table 3 and Table 4, the batch of ceramic substrate products are qualified. If the inspection fails, then
The batch of products should be resubmitted for inspection after 100% selection, and stricter inspection shall be used. If the stricter inspection is still unqualified, the batch of products shall be disqualified.
6.5.2 Type inspection judgment
In the type inspection, if all items meet the requirements of Table 5, the ceramic substrate produced in this cycle is considered qualified. If there is one or one
If the above items are unqualified, the unqualified items can be re-inspected with double the number of samples. If the re-inspection is qualified, the type inspection is qualified, if the re-inspection still fails
Qualified, the type inspection is unqualified.
7 Marking, packaging, transportation and storage
The marking, packaging, transportation and storage shall be implemented in accordance with the provisions of Chapter 6 of GB/T 9531.1-1988.
|