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GB/T 24982-2020: (Garnet structure aluminate series phosphor for white light LED)
Status: Valid GB/T 24982: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24982-2020 | English | 259 |
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(Garnet structure aluminate series phosphor for white light LED)
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GB/T 24982-2020
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| GB/T 24982-2010 | English | 239 |
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Rare earth yellow phosphor for white LED lamps
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GB/T 24982-2010
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PDF similar to GB/T 24982-2020
Basic data | Standard ID | GB/T 24982-2020 (GB/T24982-2020) | | Description (Translated English) | (Garnet structure aluminate series phosphor for white light LED) | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H65 | | Word Count Estimation | 14,187 | | Date of Issue | 2020-11-19 | | Date of Implementation | 2021-10-01 | | Older Standard (superseded by this standard) | GB/T 24982-2010 | | Regulation (derived from) | National Standard Announcement No. 26 of 2020 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 24982-2020: (Garnet structure aluminate series phosphor for white light LED)---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.
(Garnet structure aluminate series phosphor for white light LED)
ICS 77.120.99
H65
National Standards of People's Republic of China
Replace GB/T 24982-2010
Garnet structure aluminate for white LED
Series phosphor
2020-11-19 released
2021-10-01 implementation
State Administration for Market Regulation
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 replaces GB/T 24982-2010 "Rare-Earth Yellow Phosphors for White LED Lamps". Compared with GB/T 24982-2010,
In addition to editorial changes, the main technical changes are as follows.
---Modified the scope of application of the standard (see Chapter 1, Chapter 1 of the.2010 edition);
--- Added the term "chromaticity coordinates" (see 3.3);
--- Deleted the term "emission wavelength" (see 3.4 in the.2010 edition);
--- Deleted the term "emission main peak wavelength" (see 3.5 in the.2010 edition);
--- Added the term "emission peak wavelength" (see 3.5);
--- Deleted the term "thermal stability" (see 3.6 in the.2010 edition);
--- Added the term "high temperature and high humidity test" (see 3.7);
--- Added the term "PCT Test" (see 3.8);
--- Added the term "particle size distribution coefficient" (see 3.9);
---Added product classification (see 4.1);
--- Deleted the term brand.200500 (see 4.1 in the.2010 edition);
---Modified the technical indicators of the chemical composition of the product (see 4.1, 4.1 in the.2010 edition);
---Added the technical indicators of particle size distribution coefficient (see 4.2);
--- Deleted the excitation wavelength range (see 4.1 in the.2010 edition);
---Modified the chromaticity coordinate technical indicators, and listed the chromaticity coordinate range according to the product category (see 4.2, 4.1 in the.2010 edition);
---Modified the brightness technical indicators, and listed the brightness range according to the product category (see 4.2, 4.1 in the.2010 edition);
---Modified the emission peak wavelength technical indicators, and its range was changed from 520nm~580nm to 495nm~580nm, and in accordance with
The product category lists the peak wavelength range (see 4.2, 4.1 in the.2010 edition);
---Modified the density technical indicators, the range was changed from 4.5±0.3 to 4.2~6.5, and the density range was listed according to the product category
(See 4.2, 4.1 of the.2010 edition);
--- Deleted the thermal stability technical indicators (see 4.1 in the.2010 edition);
---Modified the appearance of the product (see 4.3, 4.2 of the.2010 edition);
---Deleted the grades in the standard and replaced the grades with specifications (see 6.2, 7.1.1, 7.3, 6.2, 7.1.1, 7.3 of the.2010 edition);
---Modified the center particle size test method (see 5.3, 5.3 of the.2010 edition);
---Added the particle size distribution coefficient test method (see 5.4);
---Added the technical indicators of brightness reduction and chromaticity coordinate shift in the high temperature and high humidity test (see Appendix A);
---Added the technical indicators of brightness reduction and chromaticity coordinate offset in the PCT test (see Appendix A);
---Modified the thermal quenching brightness reduction and chromaticity coordinate offset technical indicators, the brightness reduction was modified from less than 25% to less than 10%, and the color
The deviation of the product coordinates x and y values is changed from less than 0.0200 to less than 0.0020, and the thermal quenching is adjusted to the reference by the main performance index
Performance indicators (see Appendix A, 4.1 in.2010 edition);
---Added high temperature and high humidity test method (see Appendix B);
---Added PCT test method (see Appendix C).
This standard was proposed and managed by the National Rare Earth Standardization Technical Committee (SAC/TC229).
Drafting organizations of this standard. Research Rare Earth New Materials Co., Ltd., Jiangmen Keheng Industrial Co., Ltd., Jiangsu Borui Optoelectronics Co., Ltd.
Co., Ltd., Xiamen University, Guangdong Institute of Rare Metals, Anhui Xinruida Technology Co., Ltd., Baotou Rare Earth Research Institute, Guoke Rare Earth
New Materials Co., Ltd.
The main drafters of this standard. Liu Ronghui, Liu Yuanhong, Li Yanfeng, Liang Chao, Ding Xuemei, Xie Shihui, Tang Zongquan, Ding Lei, Xie Rongjun, Ni Haiyong,
Zhou Tianliang, Ding Jianhong, Wang Zhongzhi, Ma Xiaole, Wang Pengfei.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 24982-2010.
Garnet structure aluminate for white LED
Series phosphor
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, signs, and signs of garnet structure aluminate phosphors for white light LEDs.
Packaging, transportation, storage and quality certificate.
This standard is applicable to the garnet structure aluminate rare earth fluorescence prepared by high temperature solid phase reaction, coprecipitation method or combustion method and other liquid phase methods.
The phosphor emits yellow light, yellow-green light or green light when excited by a light source with a wavelength of 415nm~470nm.
Light forms white light, which is mainly used to prepare white LED light-emitting devices excited by blue LED chips.
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 references, the latest version (including all amendments) applies to this document.
GB/T 5838.1 Phosphors Part 1.Terminology
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 14634.5 Test method of rare earth trichromatic phosphors for lamps-Part 5.Determination of density
GB/T 20170.1-2006 Test methods for physical properties of rare earth metals and their compounds Determination of particle size distribution of rare earth compounds
GB/T 23595 (all parts) Test method for rare earth yellow phosphors for white LED lamps
3 Terms and definitions
The following terms and definitions defined in GB/T 5838.1 apply to this document.
3.1
Standard phosphor
Phosphors that are manufactured according to specified specifications and certain requirements, given fixed values of performance indicators, and used to measure relative brightness of products.
3.2
Relative brightness
Br
Under the specified excitation conditions, the ratio of the brightness of the phosphor sample to the corresponding standard phosphor.
3.3
Chromaticity coordinates
A set of parameters used to characterize the luminous color of the phosphor after being excited is calculated according to the CIE1931 standard chromaticity observer rule.
3.4
Excitation peak wavelength
λex
The wavelength corresponding to the peak with the highest luminous intensity in the excitation spectrum.
Note. The unit of excitation peak wavelength is nm.
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