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GB/T 2423.45-2012 English PDF

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GB/T 2423.45-2012: Environmental testing - Part 2: Test methods - Test Z/ABDM: Climatic sequence
Status: Valid

GB/T 2423.45: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 2423.45-2012439 Add to Cart 4 days Environmental testing - Part 2: Test methods - Test Z/ABDM: Climatic sequence Valid
GB/T 2423.45-1997599 Add to Cart 3 days Environmental testing for electric and electronic products - Part 2: Test methods - Test Z/ABDM: Climatic sequence Obsolete

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Basic data

Standard ID: GB/T 2423.45-2012 (GB/T2423.45-2012)
Description (Translated English): Environmental testing - Part 2: Test methods - Test Z/ABDM: Climatic sequence
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K04
Classification of International Standard: 19.040
Word Count Estimation: 19,185
Older Standard (superseded by this standard): GB/T 2423.45-1997
Quoted Standard: GB/T 2421.1-2008, GB/T 2422-2012, GB/T 2423.1-2008, GB/T 2423.2-2008, GB/T 2423.4-2008, GB/T 2423.21-2008, GB/T 2424.1-2005, GB/T 2424.2-2005, GB/T 4797.1, GB/T 4797.2, GB/T 4797.3, GB/T 4797.4, GB/T 4797.5, GB/T 4797.6, GB/T 4797.7, GB/T 4797.8, GB/T 479
Adopted Standard: IEC 60068-2-61-1991, MOD
Regulation (derived from): National Standards Bulletin No. 41 of 2012
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the test sample in order to withstand the temperature, humidity and low air pressure (if necessary) the composition of the environment and other environmental stress conditions of environmental adaptability of a standard combinatio

GB/T 2423.45-2012: Environmental testing - Part 2: Test methods - Test Z/ABDM: Climatic sequence

---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.
Environmental testing - Part 2.Test methods - Test Z/ABDM. Climatic sequence ICS 19.040 K04 National Standards of People's Republic of China Replace GB/T 2423.45-1997 Environmental testing Part 2.Test methods Test Z/ABDM. climatic sequence (IEC 60068-2-61.1991,MOD) 2012-12-31 released 2013-06-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by the National Standardization Administration of China

Table of contents

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Definition 1 4 Test equipment 2 5 Severity level 2 6 Pretreatment 2 7 Initial inspection 2 8 Experiment 2 9 Recovery 4 10 Final inspection 4 11 Information that should be given by relevant specifications 4 Appendix A (informative appendix) Guidelines for specification writers 10 Appendix B (Informative Appendix) Test Implementation Guidelines 11 Appendix NA (informative appendix) GB/T 2423 standard component 12 Environmental testing Part 2.Test methods Test Z/ABDM. climatic sequence

1 Scope

This part of GB/T 2423 gives the determination that the test sample is subjected to environmental stresses such as temperature, damp heat and low air pressure (if necessary). A standard combined test method for environmental adaptability under the environmental conditions of the composition. The sequence of applying stress and the environmental conditions when the test steps are switched have been selected to accelerate and strengthen the same as natural climatic conditions. Deterioration mechanism. Note. See GB/T 4797 and GB/T 4798 for classification and classification of natural environmental conditions. When the degradation mechanism is the same and meets the specified test requirements, this section can also be used as the basis for the preparation of similar test methods. In this test, the test samples are subjected to environmental tests in the standard order, and are classified according to the code specified in Appendix A of GB/T 2421.1-2008 Class, only the third group of numbers is used to indicate Step 5.the number of cycles of the alternating damp heat test Db (see Chapter 5 of GB/T 2423.4-2008). exist In this section, the dashes in climate types such as -/-/56, 40/-/- can be used in combinations such as 55/100/56, 25/085/56, 40/085/21, etc. Replace any standard value in this position. If it needs to be changed, the relevant specification should provide the required information for each step of the selected test method (see Chapter 8). This test is often arranged after other tests related to mechanical stress, such as terminal strength test, solderability test and vibration test. As a method to determine whether the sealing of the test sample is damaged.

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 2421.1-2008 Overview and Guidelines for Environmental Testing of Electrical and Electronic Products (IEC 60068-1.1988, IDT) GB/T 2422-2012 Guidelines for the preparation of environmental testing test methods, terms and definitions (IEC 60068-5-2.1990, IDT) GB/T 2423.1-2008 Environmental testing of electric and electronic products Part 2.Test method Test A. Low temperature (IEC 60068-2- 1.2007, IDT) GB/T 2423.2-2008 Environmental testing of electric and electronic products Part 2.Test method Test B. High temperature (IEC 60068-2- 2.2007, IDT) GB/T 2423.4-2008 Environmental testing of electrical and electronic products Part 2.Test method Test Db. Alternating damp heat (12h 12h cycle) (IEC 60068-2-30.2005, IDT) GB/T 2423.21-2008 Environmental testing of electric and electronic products Part 2.Test method Test M. Low air pressure (IEC 60068-2-13.1983, IDT) GB/T 2424.1-2005 Environmental testing guidelines for electrical and electronic products at high temperature and low temperature (IEC 60068-3-1.1974, IDT) GB/T 2424.2-2005 Electrical and electronic products environmental test damp heat test guidelines (IEC 60068-3-4.2001, IDT) GB/T 4797 (all parts) Natural environmental conditions for electrical and electronic products GB/T 4798 (all parts) Environmental conditions for the application of electrical and electronic products

3 definition

The terms and definitions defined in GB/T 2422-2012 apply to this document.

4 Test equipment

The test equipment is what is required for each individual test (including test methods and test methods), and has the strictness required by the sequence. Grade of equipment. When using a single test box that can meet the test conditions specified in the different test steps in the sequence, special attention is required (see B.3). Generally speaking, it can be considered that the use of a dedicated test box that makes the test sample automatically switch between different working spaces and the use of separate tests The effect of the box is the same. However, the test chamber with automatic conversion device must ensure that it meets the requirements at the end of each test step (especially method 1 At the end of the test step 2) recovery conditions (see 8.2.2).

5 severity level

The severity level is mainly composed of high temperature test temperature (6.5.2 in GB/T 2423.2-2008), low temperature test temperature (GB/T 2423.1- In.2008, 6.6.1), air pressure and test duration [if required to select low air pressure test (GB/T 2423.21-2008 Chapter 4)] decided, the most The latter item is the number of damp heat test cycles in 8.2.5 of this section.

6 pretreatment

Unless otherwise specified in relevant specifications, pretreatment is generally required. The pretreatment should be under the standard atmospheric conditions of the test (GB/T 2421.1- 5.3.1) In.2008, it should be placed continuously for at least 1h.

7 Initial inspection

The test samples shall be subjected to visual inspection, dimensional inspection and functional inspection as specified in relevant specifications.

8 test

8.1 Overview There are 3 standardized test methods. Among them, method 1 is the best and should always be used, unless otherwise specified in the relevant specifications. In method 1, the test sample is exposed to high temperature first, then exposed to damp heat for 1 cycle, and then the low temperature test is carried out immediately. Freeze the water vapor entering the sample or into the cracks on the sealing surface of the sample, causing further damage to the sample. Then, test at low pressure (for (Optional) and then exposed to alternating damp and heat conditions (except for climate type -/-/04 and -/-/10) to complete the seal inspection of the test sample. Method 2 is a more severe test. This test inserts a low temperature test between each of the last 5 damp heat cycles (only suitable Used for climate type -/-/56). Method 3 provides a shorter climatic sequence for the batch acceptance test. When the relevant specifications have provisions, it can be applied to the acceptance of the reviewed quality. The amount of electronic components. When a recovery phase is specified, it should be carried out under the standard atmospheric conditions of the test, unless otherwise specified in the relevant specifications. 8.2 Method 1 This method contains 5 test steps, of which 8.2.4 step 4 is optional. 8.2.1 Step 1.High temperature a) Expose the test sample to the conditions of GB/T 2423.2-2008 Chapter 5 High Temperature Test Bb for a duration of 16h ± 0.5h, the test temperature should be specified by the relevant specifications, preferably the temperature specified by the climate type. Relevant specifications can stipulate that the intermediate test (6.9 in GB/T 2423.2-2008) should be carried out at the end of the high temperature test. Time is not included in the exposure duration. b) Remove the test sample out of the test box, the recovery time is at least 1h, and end step 1.The total duration of step 1 is 24h±0.5h. c) The time interval before step 2 is not allowed to be longer than 72h (3d), the condition during this period is the recovery condition, that is, the test is used Standard atmospheric conditions. 8.2.2 Step 2.Humidity and heat a) Expose the test sample to alternating damp and heat conditions for 1 cycle in accordance with the provisions of Chapter 7 of GB/T 2423.4-2008.Like There are no special regulations in the relevant specifications, and alternative method 1 should generally be used. Unless otherwise specified in the relevant specifications, the high temperature should be 55°C. b) Then, restore it as specified in Chapter 9 of GB/T 2423.4-2008. c) After recovery, the test sample should be subjected to step 3 test immediately. 8.2.3 Step 3.Low temperature a) Expose the test sample to the low temperature test Ab specified in Chapter 5 of GB/T 2423.1-2008 for a duration of 120min±5min, the test temperature is specified by the relevant specifications, preferably the temperature specified by the climate type. Relevant specifications can stipulate that the intermediate test (6.10 in GB/T 2423.1-2008) should be carried out at the end of the low temperature test. Time is not included in the exposure duration. b) Remove the test sample out of the test box and restore it as specified in 6.12 of GB/T 2423.1-2008. c) The time interval before step 5 is not allowed to be longer than 72h (3d), the condition of this period of time is the recovery condition. But when it comes When step 4 is selected for the relevant specifications, it should be implemented within the interval. 8.2.4 Step 4 (optional). low air pressure a) When the relevant regulations require low-pressure tests, the test samples with climate types of 40/-/-, 55/-/- and 65/-/- should be exposed to Under the conditions of GB/T 2423.21-2008 test M, the severity level should be the severity level specified by the relevant code. Unless otherwise specified in the relevant specifications, the test should be carried out at a temperature of 15°C to 35°C, and the test duration is 60min± 5min. When an electric strength test is specified in the relevant code, it shall be carried out in accordance with the specified test voltage and procedure within the last 5 minutes of exposure. b) The recovery time should be 1h~2h. 8.2.5 Step 5.Humidity and heat a) The test conditions are the same as 8.2.2a). Unless otherwise specified in the relevant specifications, the number of test cycles shall be determined according to the following climate types. Climate type. -/-/04 and -/-/10 not applicable -/-/21 cycle once -/-/56 loop 5 times b) When there are provisions in the relevant specifications, the samples tested according to 8.2.5a) should be taken out of the test box immediately after completing the specified number of cycles. Remove the water droplets, and then within 15 minutes after the sample leaves the test box, it should be visually inspected and dimensioned according to the relevant specifications. Inspection and functional inspection. c) After the recovery for 1.5h~2h, the test sample should be subjected to visual inspection, dimensional inspection and functional inspection as specified in relevant specifications. d) When the relevant specifications stipulate an extended recovery phase, the test sample shall be allowed to recover for another 24h±0.5h, and then the relevant The visual inspection, dimensional inspection and functional inspection required by the specification. 8.3 Method 2 When using method 2 in relevant specifications, it should be noted that this method is only applicable to test samples with climate type -/-/56. 8.3.1 The test samples shall be tested according to 8.2.1~8.2.4 (see Figure 2). 8.3.2 Then, perform a cycle of alternating damp heat test Db on the test sample, and then restore it according to 8.2.2b). 8.3.3 After recovery, the low temperature test Ab should be performed on the test sample immediately according to 8.2.3. 8.3.4 Repeat the test described in 8.3.2 and 8.3.3 three more times, that is, perform a total of 4 test cycles, and finally perform another test according to 8.3.2 Cycle alternating damp heat test Db, and then resume. Allow a time interval of no more than 72h (3d), and should only be arranged between the low temperature test and the subsequent heat and humidity cycle. 8.3.5 Then, the test samples should be tested in 8.2.5b), 8.2.5c) and 8.2.5d) according to the relevant regulations. 8.4 Method 3 This method can only be applied when the relevant regulations have such provisions (see Figure 1). 8.4.1 Test the test samples according to 8.2.1~8.2.3. 8.4.2 When specified in the relevant specifications, the test sample shall be subjected to the test described in 8.2.4 of this section. M. Low air pressure (GB/T 2423.21- 2008). 8.4.3 For test samples with climate types -/-/21 and -/-/56, one cycle of damp heat test Db shall be carried out according to 8.2.2. 8.4.4 Then, the test samples should be tested in 8.2.5b), 8.2.5c) and 8.2.5d) according to the relevant regulations.

9 Recovery

The recovery conditions and recovery requirements of the three test methods in Chapter 8 are in accordance with 8.1. 10 Final inspection The test sample shall be subjected to visual inspection, dimensional inspection and functional inspection as specified in Chapter 8 of the relevant specifications. Relevant specifications should be provided to receive Or the criterion for rejecting the sample. 11 Information to be given by relevant specifications When this test is included in the relevant specifications, the following details should be given according to its applicability. Special attention should be paid to the items marked with (*). The information to be given. Article number a) When pretreatment is not required 6 b) Initial inspection (*) 7 c) Test method (need to be given when it is not method 1) 8.1 d) Recovery 8.1 e) High temperature test temperature (*) 8.2.1a) f) Intermediate inspection 8.2.1a) 8.2.3a) 8.2.5b) 8.3.5 8.4.1 8.4.4

Appendix A

(Informative appendix) Guidelines for specification writers A.1 Intermediate inspection Specification writers should pay attention to the consequences of specifying intermediate tests (see 8.2) at the end of Step 1 and Step 3 of Method 1.Due to the middle The time spent on testing should be added to the duration of exposure, which will increase the practical difficulty of considering normal working hours and increase testing. cost. The above-mentioned intermediate tests are not helpful for achieving the purpose of this test, namely the effects under a series of climatic stresses. Generally speaking, they only It replaces several separate tests that can be carried out with additional test samples not at the same time as the current climate sequence test. Therefore, testing in the middle of the regulations Think carefully before. A.2 Recovery The time for the test sample to reach the equilibrium state depends on its thermal inertia, that is, it depends on the shape, quality and structure of the test sample. To the headquarters In terms of points, the recovery time is selected as 1h, which is suitable for the smallest test samples; for other test samples, especially equipment test samples, the corresponding The relevant specifications should specify a moderate recovery time.

Appendix B

(Informative appendix) Test implementation guidelines B.1 Operation schedule Special reminders to the personnel conducting the test that it is necessary to compile an accurate operation schedule so that this sequence can be executed correctly, and Cooperate with normal working hours as much as possible. Figure 3 shows an example of Method 1. The total time of each test step is not fixed, but depends on the time and the time required for intermediate measurement at the end of step 1 and step 3. The thawing time after the end of step 3.In addition, the extra part when the recovery time is more than 1h should be included. B.2 GB/T 2423.1-2008, GB/T 2423.2-2008, GB/T 2423.4-2008 and GB/T 2423.21-2008 Consider it together with the guidelines such as GB/T 2424.1-2005 and GB/T 2424.2-2005. B.3 Use of a single test chamber A single test box refers to a test box that can continuously meet various conditions specified in different test steps in a test box. Special care needs to be taken when planting the test chamber. This type of test box has thermal inertia or condensed water after the previous environmental stress is applied, so It is often difficult to meet the required recovery conditions. The transition between the damp heat test step and the low temperature test step can only be done when the internal conditions of the test box are changed while the test box is removed from the test box. The test sample is correct. In fact, the dryness that occurs during the recovery period after the damp heat test is only Dryness is not equal. ---When the test sample is put into the low temperature test box that has been cooled down, the water contained in the test sample will freeze quickly; ---Cool the test box with the test sample inside, and it will dry during the cooling process before freezing, and the water contained in the test sample may be Part is removed. GB/T 2423.45-2012 Environmental testing - Part 2.Test methods - Test Z/ABDM. Climatic sequence ICS 19.040 K04 National Standards of People's Republic of China Replace GB/T 2423.45-1997 Environmental testing Part 2.Test methods Test Z/ABDM. climatic sequence (IEC 60068-2-61.1991,MOD) 2012-12-31 released 2013-06-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued by the National Standardization Administration of China

Table of contents

Foreword Ⅰ 1 Scope 1 2 Normative references 1 3 Definition 1 4 Test equipment 2 5 Severity level 2 6 Pretreatment 2 7 Initial inspection 2 8 Experiment 2 9 Recovery 4 10 Final inspection 4 11 Information that should be given by relevant specifications 4 Appendix A (informative appendix) Guidelines for specification writers 10 Appendix B (Informative Appendix) Test Implementation Guidelines 11 Appendix NA (informative appendix) GB/T 2423 standard component 12 Environmental testing Part 2.Test methods Test Z/ABDM. climatic sequence

1 Scope

This part of GB/T 2423 gives the determination that the test sample is subjected to environmental stresses such as temperature, damp heat and low air pressure (if necessary). A standard combined test method for environmental adaptability under the environmental conditions of the composition. The sequence of applying stress and the environmental conditions when the test steps are switched have been selected to accelerate and strengthen the same as natural climatic conditions. Deterioration mechanism. Note. See GB/T 4797 and GB/T 4798 for classification and classification of natural environmental conditions. When the degradation mechanism is the same and meets the specified test requirements, this section can also be used as the basis for the preparation of similar test methods. In this test, the test samples are subjected to environmental tests in the standard order, and are classified according to the code specified in App......
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