SJ 20786-2000 General specification for semiconductor optoelectronic components

This specification specifies the general requirements and quality assurance regulations for military semiconductor optoelectronic components (hereinafter referred to as products). This specification applies to the development, production and procurement of military semiconductor optoelectronic components. SJ 20786-2000 General Specification for Semiconductor Optoelectronic Components SJ20786-2000 Standard download decompression password: www.bzxz.net

Military standard of the electronics industry of the People's Republic of China FL5980
SJ20786—2000
General specification for
semiconductor opto-electronic assembly200010-20 Issued
Implementation on 2000-10-20
Approved by the Ministry of Information Industry of the People's Republic of China Military standard of the electronics industry of the People's Republic of China General specification for semiconductor opto-electronic assembly
General specification for scmiconductor opto-electronic assembly1 Scope
1.1 Subject content
SJ20786—2000
This specification specifies the general requirements and quality assurance provisions for military semiconductor optoelectronic components (hereinafter referred to as products): 1.2 Scope of application
This specification applies to the development, production and procurement of military semiconductor optical components. 1.3 Quality Assurance Level
The product quality assurance levels provided in this specification are divided into two levels from low to high, Z1, B, and Z2. Products with higher assurance levels can replace products with lower assurance levels. 2 Referenced Documents
GB/T191—1990 Pictorial signs for other packaging, storage and transportation GB/T3191-1982 Aluminum and aluminum alloy extruded bars GB/T3192-1982 High-strength aluminum alloy extruded bars GB/T3193-1982 Aluminum and aluminum alloy hot-rolled plates GB/T5231-1995 Processing—Chemical composition and product shape GB/T5232-1995 Processing brass—Chemical composition and product shape GB/T5233-1995 Processing bronze—Chemical composition and product shape GB7247—1995 Radiation safety, equipment classification, requirements and user guide for laser products Data elements and exchange formats Information exchange date and time representation method GB/T 7408—1994
GJB150.3-86 Environmental test methods for military equipment High temperature test GJB150.4—86 Environmental test methods for military equipment Low temperature test GJB150.10—86 Environmental test methods for military equipment Zero bacteria test GJB151A-97 Requirements for electromagnetic emission and sensitivity of military equipment and subsystems GJB152A—97 Measurement of electromagnetic emission and sensitivity of military equipment and subsystems GJB179A—96 Procedures and tables for sampling inspection by attributes GJB360A—96 Test methods for electronic and electrical components GJB546A—96 Outline for quality assurance of electronic components GJB548A—96 Test methods and procedures for microelectronic devices Ministry of Information Industry of the People's Republic of China Issued on October 20, 2000 niKAoNrkAca
Implementation on October 20, 2000
SJ 20786--2000
GJB899-90 Reliability Appraisal and Acceptance Test GJB1919--94 General Specification for Environment-Resistant Neutral Circular Optical Fiber and Cable Connectors GJB1649--93 Outline for Control of Anti-electrostatic Discharge of Electronic Products 3 Requirements
3.1 General
The contractor who supplies goods in accordance with the provisions of this specification shall have production and testing equipment and instruments sufficient to ensure compliance with the requirements of this specification and relevant detailed specifications. If required, a quality assurance plan for the corresponding products shall be formulated. 3.1.1 Detailed Specifications
The specific requirements and characteristics of the product shall be specified in the relevant detailed specifications. If the source or document is not specified, the word "as specified" used in this specification refers to the provisions of the relevant product detailed specifications. 3.1.2 Priority
When the requirements of this specification conflict with the requirements of the relevant documents. The requirements shall be determined in the following priority order. a. Relevant detailed specifications:
b. This specification:
C, standards and other documents listed in Chapter 2. 3.2 Qualification
Products provided in accordance with this specification shall be qualified products (see Chapter 4). 3.3 Quality Assurance Requirements
Products provided in accordance with this specification shall be in accordance with the procedures and requirements specified in Chapter 4 of this specification and GJB546A. A quality assurance outline shall be established and implemented in combination with the specific characteristics of the product. 3.4 Design, structure, dimensions and material requirements The design, structure, dimensions and materials of products supplied in accordance with this specification shall comply with the provisions of this specification and relevant detailed specifications.
3.4.1 Design
The following requirements shall be considered when designing products: a. This specification and detailed specifications:
b. Reliability requirements:
c. Quality information feedback from users of similar products produced by the contractor. 3.4.2 Packaging
Products supplied in accordance with this specification shall preferably be packaged in a metal shell. 3.4.3 Components
All components used in products supplied in accordance with this specification shall comply with the requirements of the corresponding product specifications and be screened in accordance with relevant requirements.
3.4.4 Metal Materials
The aluminum materials used in the products shall comply with the provisions of GB/T3191, GB/T3192, GB/T3193, and the copper materials used shall comply with the provisions of GB/T5231, GB/T5232, GB/T5233: The external metal surface of the product shall be corrosion-resistant or have undergone corrosion-resistant treatment such as plating, oxidation, and coating. 3.4.5 Other Materials
SJ 20786—2000
Other materials used in the product (such as substrates, etc.) shall be qualified after inspection in accordance with the relevant documents, and shall not produce harmful effects under the specified storage and working environment. 3.4.6 Structure and dimensions
The product's hook and dimensions shall comply with the regulations (see 3.1.1). 3.4.7 Appearance quality
The product's appearance shall be smooth and free of burrs, dents, scratches and other defects that affect the life, use or appearance. 3.4.8 Quality (weight)
The quality of the product shall comply with the regulations (see 3.1.1). 3.4.9 Welding
The electrical connection of the product shall preferably adopt alloy welding or ultrasonic welding. 3.5 Marking
The marking shall comply with the requirements of this specification and relevant detailed specifications. 3.5.1 Marking on the product
a. Product model and/or name (see 3.1.1): b. Name, code or trademark of the manufacturer (see 3.5.2): c. Military mark (see 3.5.3); d. Inspection batch identification code (see 3.5.4); e. Serial number (see 3.5.5); f. Optical and electrical interface marks (see 3.5.6); Name and special marks (see 3.5.7); h. Other marks when applicable (see 3.5.8). 3.5.2 Name, code or trademark of the manufacturer
The manufacturer's factory name, code or trademark shall be on the contracted products so that the manufacturer can be easily identified by the mark. The factory name, code or trademark used by the manufacturer shall be filed with the appraisal agency when the appraisal is approved. 3.5.3 Military mark
Products produced and finalized in batches according to the requirements of this specification and relevant detailed specifications shall use the letter "" as the quality mark of military products. Only products that meet the requirements of this specification and relevant military detailed specifications and are qualified and maintained in accordance with the provisions of the military electronic components quality certification regulations can be used as quality certification marks for military products. 3.5.4 Inspection batch identification code
The product should be marked with an inspection batch identification code. The first two digits in the code are the last two digits of the year, and the last two digits of the code represent the week number of the batch submitted for inspection. The week number should comply with the provisions of GB/T7408. 3.5.5 Serial number
Before the first optoelectronic parameter test in the screening, all products to be inspected should be serially numbered continuously so that the test results can be traced back to each group of the inspection batch. 3.5.6 Optical and electrical interface marks
When applicable, optical and electrical interface marks should be marked. 3.5.7 Special signs
3.5.7.1 Laser protection signs
Laser protection signs shall comply with the requirements of GB7247, -3-
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3.5.7.2 Electrostatic discharge sensitivity signs
SJ 20786--2000
When the level of a product is determined through an electrostatic discharge sensitivity test, the product represented by the test shall be marked as follows: a. Level 1: ≤1999V. Indicated by a hollow or solid equilateral triangle "△". b. Level 2: 2000V~3999V, indicated by two hollow or solid equilateral triangles "△△". c. Level 3: ≥4000V, no sign is used. 3.5.8 Other signs
If any special signs are used, they should not be confused or contradictory with the signs specified in Article 3.5.1. 3.5.9. Clarity of marking
The marking of the product shall be clear and obvious. After all tests, the marking shall remain clear. Damage to the marking caused by mechanical testing tools shall not be used as the basis for batch acceptance, but products with damaged markings shall be re-marked to ensure that the markings are complete and clear when delivered.
3.6 Photoelectric characteristics
When the product is tested according to the regulations (see 3.1), the photoelectric characteristics shall comply with the regulations (see 3.1). 3. Mechanical and environmental requirements
3.7.1 Low temperature
When the product is tested according to GJB150.4, the photoelectric characteristics shall comply with the regulations (see 3.1). 3.7.2 High temperature
When the product is tested according to GJB150.3, the photoelectric characteristics shall comply with the regulations (see 3.1). 3.7.3 Temperature shock, steady-state damp heat, and sealing products should be tested for temperature shock according to GJB360A method 107, and for steady-state damp heat according to GJB360A method 103. When applicable, the sealing test should be carried out according to the regulations and should meet the relevant requirements. The products should be tested for the end-point photoelectric characteristics according to the regulations (see 3.1), and the photoelectric characteristics should meet the regulations (see 3.1). 3.7.4 Sweep frequency vibration, impact
The products should be tested for sweep frequency vibration according to GJB548A method 2007, and for impact according to GJB360A method 213, and should meet the relevant requirements. The products should be tested for the end-point photoelectric characteristics according to the regulations (see 3.1), and the photoelectric characteristics should meet the regulations (see 3.1).
3.7.5Solvent resistance, terminal strength, pigtail (cable) tension load, solderabilityThe products shall be tested for solvent resistance according to GJB360A Method 215, and the terminal strength test shall be carried out according to GJB360A Method 211 when applicable. The products with pigtails (cables) shall be tested for pigtail (cable) tension load according to 4.6.2.17 of GJB919, and the solderability test shall be carried out according to GJB360A Method 208 when applicable, and shall meet the relevant requirements. 3.7.6Electromagnetic compatibility
When applicable, when tested according to GJB152A, the products shall meet the requirements of GJB151A on electromagnetic emission and sensitivity.
3.7.7Electrostatic discharge sensitivity (ESDS)
When applicable, when tested according to GJB1649, it shall meet the relevant requirements. 3.7.8 Low pressure
When applicable, the product shall be tested for low pressure according to GJB548A Method 1001 and shall meet the relevant requirements. 3.7.9 Salt spray
When applicable, the product shall be tested for salt spray according to GJB548A Method 1009A and shall meet the relevant requirements. - 4-
3.7.10 Mold
SJ 20786—2000
When applicable, the product shall be tested for mold according to GJB150.10 and shall meet the relevant requirements. 3.8 Maintainability
The product shall not require preventive maintenance
3.9 Reliability
When applicable, MTBF verification test shall be carried out according to GJB899 and MTBF shall meet the requirements (see 3.1). 3.10 Safety
3.10.1 Product Safety
The product shall have the following safety measures:
a. The power supply shall indicate the positive and negative poles
b. The plug-in shall have measures to prevent wrong insertion:
c. When required, a grounding terminal shall be installed. 3.10.2 Personnel Safety
All easily accessible parts of the exposed exterior shall be at ground potential during normal operation, and the product's housing, corners and edges shall be free of burrs, spikes and sharp edges.
The radiation safety and protection of the product shall comply with the relevant provisions of GB7247. 4 Quality Assurance Provisions
4.1 Inspection Responsibility
Unless otherwise specified, the contractor shall be responsible for performing all inspections specified in this specification and detailed specifications. If necessary, the ordering party or the appraisal agency has the right to inspect any inspection items specified in this specification to determine whether the provided product meets the specified requirements.
4.1.1 Responsibility for Conformity
All products must meet all requirements of Chapter 3 and Chapter 5 of this specification. If the contract includes inspection requirements not specified in this specification, the contractor shall also ensure that the products submitted for acceptance meet the contract requirements. 4.2 Procedures for Products Stored for More Than 36 Months
Products that have passed the identification inspection or quality consistency inspection and have been stored at the contractor for more than 36 months shall be re-inspected by the contractor in accordance with all inspection requirements of Group A inspection for the inspection lot to be delivered before delivery. If the re-inspection fails, all products shall be subjected to 100% of all inspections of the unqualified grouping: Products that do not meet any of the requirements shall be removed from the lot. 4.3 Inspection Classification
The inspections specified in this specification are divided into:
a. Screening (see Article 4.10);
b. Identification inspection (see Article 4.9);
c. Quality consistency inspection (see Article 4.11). 4.4 Composition of inspection lot
All products of the same number (including different specifications) produced on the same production line with the same design, the same process, the same materials and submitted for inspection at the same time constitute an inspection lot. 4.5 Handling of samples
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SJ20786—2000
Products that have been subjected to destructive tests cannot be delivered as qualified products. If the identification or quality consistency inspection is qualified, the samples that have undergone the non-destructive tests specified in 4.5.2 and other tests proved to be non-destructive (see 4.5.1) during the inspection, and the characteristics after the test meet the qualification criteria of Group A, can be delivered as contract products. Products that fail in one or more non-destructive tests of identification or quality consistency inspection cannot be delivered as qualified products for non-repairable products: for repairable products, they can be delivered as qualified products after being repaired and passing the test. 4.5.1 Destructive tests
Unless otherwise specified, the following tests shall be classified as destructive tests: Salt spray test
Leader strength test
Pigtail (cable) tension load test
Welding heat resistance test
Weldability test
Electrostatic discharge test
Except for the items listed in 4.5.2, other mechanical and climatic tests shall be treated as destructive tests at the beginning. Only when the data accumulated subsequently are sufficient to show that the test is a non-destructive test, can it be treated as a non-destructive test. If a test is repeated 5 times on the same group of samples without any signs of cumulative degradation or failure of the test, the test can be considered as non-destructive. 4.5.2 Non-destructive tests
Unless otherwise specified, the following tests are non-destructive tests: External visual inspection
High temperature test
Low temperature test
Items specified as screening and Group A inspection in this standard and detailed specifications should be considered as non-destructive. 4.6 Failures due to equipment failure or operator error When a failure is determined to be due to equipment failure or operator error, the failure shall be recorded in the test record, which shall be kept together with all the data confirming that the product should not be deemed unqualified. Samples shall be re-sampled according to the original sampling plan for all tests of the test group. 4.7 Resubmitted batches
When any inspection batch submitted for identification or quality consistency inspection does not meet the requirements of any group in the inspection of Group A, B or C; corrective measures shall be taken according to the cause of non-conformity, and the unqualified inspection group shall be resubmitted for inspection. Re-inspection of Group A shall be carried out 100%. Samples that fail the inspection of Group A shall be eliminated. For repairable products, after the product is repaired, the re-inspection of the groups B and C shall be carried out according to the original sampling plan. For non-repairable products, only when the failure mechanism is confirmed and the failure is caused by a product defect, and this defect can be effectively eliminated by re-screening the entire batch of products, and such screening has been carried out on the entire batch of products, can the group re-test of Group B and Group C be carried out at twice the original sampling plan. If the re-sampling test of Group B and Group C is still effective, the contractor shall provide the information on the failure and the corrective measures taken to the appraisal agency and the relevant competent authorities for decision. 4.8 Inspection method
Unless otherwise specified, the following inspection method shall be used for inspection. If the contractor can prove to the appraisal agency that other test methods are used instead of the test methods specified in the standard without relaxing the requirements of this specification, the alternative test method may be used with the consent of the appraisal agency.
4.8.1 Appearance and mechanical inspection
The product shall be inspected by measuring and weighing tools that meet the accuracy requirements to prove whether its logo, structure, shape and size, quality and external surface meet the requirements (see 3.4.6, 3.4.7, 3.4.8, 3.5.1). 4.8.2 Photoelectric characteristic inspection
The photoelectric characteristic inspection shall be carried out in accordance with the provisions of relevant standards and detailed specifications. 4.8.3 Mechanical and environmental inspection
Unless otherwise specified, the inspection method shall be in accordance with GJB150.3, GJB150.4, GJB150.10, GJB152A, GJB360A, GJB548A, GJB1649, GJB1919. 4.8.4 Reliability verification test
Perform MTBF verification test in accordance with GJB899 and relevant detailed specifications. 4.9 Qualification inspection
During the qualification inspection, the product shall be subjected to the same Group A, Group B and Inspection of Group C, 4.9.1 Number of samples submitted for identification inspection
The identification inspection batch shall be selected by the contractor. The size of the inspection batch shall be at least 1.5 times the number of Group B and Group C samples required for identification inspection.
4.9.2 Retention of identification qualification data
In order to maintain the qualification qualification, the contractor shall submit a report to the identification agency every 12 months. The report shall include the following contents:
a. Summary of all Group A inspection results conducted by the contractor, which shall at least indicate the qualified rate of the batch; b. Summary of Group B and Group C inspection results: which shall include the number of failures and failure modes. The summary shall include the results of all Group B and Group C inspections conducted and completed within 12 months. If the test result summary indicates non-conformity with the specification requirements and no corrective measures are taken to the approval of the identification agency, the qualification qualification of the product shall be revoked. If production is discontinued during the validity period of the report, the contractor shall submit a report stating that the contractor still maintains the necessary capabilities to produce this product.
If there is no production within three consecutive reporting periods, the identification test shall be repeated before providing the certified standard state products. 4.10 Screening
Before submitting for identification or quality consistency inspection, all products shall be screened according to the items, sequence and requirements listed in Table 1 or as specified by the ship. Those that do not meet the requirements of this specification and detailed specifications shall be eliminated. For non-repairable products, the eliminated samples cannot be delivered as qualified products. For repairable products, they can be re-screened after repair. The electrical performance requirements during and after the screening test shall be specified in the detailed specifications. -7-
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Screening items
Visual inspection before sealing
High temperature storage
Temperature shock
Low temperature working
High temperature working
Electrical aging
Final photoelectric characteristic test
Sealing (applicable inches)
External daily inspection
4.1tQuality consistency inspection
SJ 20786-2000
Table 1 Screening
Test method
As specified
GJB 150.3 2.1
GJB 360A Method 107
GJB 2.2 in 150.4
GJB 2.2 in 150.3
GJB 360A Method 213
As specified
As specified
As specified
As specified
Storage temperature see Table 5
Time as specified
Table 7, 5 cycles
Temperature see Table 4, the rest as specified
Temperature see Table 5: the rest as specified
Rated working conditions, at least 48 h
As specified
As specified
GJB548A Method 2009A As specified
Or as specified
When specified
When specified
Quality consistency inspection includes Group A inspection conducted on each batch, Group B inspection and Group C inspection conducted periodically. Within the period of qualified inspection of Group C, batches that have qualified both Group A and Group B inspections can be delivered. 4. 11. 1 Group A inspection
Each inspection batch shall be subject to Group A inspection in accordance with the provisions of Table 2 and detailed specifications. Table 2 Group A inspection
Inspection items
A1 Group appearance and mechanical inspection
A2 Group photoelectric characteristics
Test method
3.4.6,3.4.7, 3.4.8, 3.5.1
Note: 1) See G.IB179A. If the sample size is equal to or exceeds the batch, a 100% inspection shall be carried out. 4. 11. 2 Group B inspection
Sampling requirements! ”
Each inspection batch shall be subject to Group B inspection according to the provisions of Table 3 and detailed specifications. Samples for Group B inspection shall be taken from the batches that have passed the Group A inspection. According to the contractor’s choice, samples that have passed the Group B1 test may be used for Group B2 test. 8 -
Inspection items
B1 group
Low temperature test
End point photoelectric characteristic test
B2 group
High temperature test
End point photoelectric characteristic test
Test method
As specified
As specified
SJ 20786—2000
Table 3 B group test
As specified
T,=25°C, recovery time as specified
As specified
As specified
As specified
As specified
T=25°C, recovery time as specifiedSampling requirementsSample
Size (number of acceptances)
2/ (0)
2/ (0)
B1 group low temperature test shall be carried out in accordance with GJB150.4. If there are no other provisions, the time and temperature shall be selected from Table 4.
Test conditions
Storage time and temperature
24 h,-40 °℃
24 h, -40 °℃
24 h,-55 °℃
24 h,-55 °℃
Working time and temperature
1 h, -10°℃
1h,-25°℃
1 h. -40 °C
1 h -55 ℃
B2 group high temperature test shall be carried out in accordance with GJB150.3. If there is no other provision, the time and temperature shall be selected from Table 5.
Test conditions
4.11.3C group inspection
Storage time and temperature
48h, 70°℃
48 h, 70°℃
48 h, 85°℃
48 h, 100°℃
48 h, 125 °℃
Working time and degreewww.bzxz.net
1h,45°℃
Th：55℃
1h,70°℃
T h, 85°℃
1 h,100°℃
Group C inspection is a periodic inspection. Continuous production should be subject to Group C inspection every 12 months in accordance with the provisions of Table 6 and detailed specifications. Group C inspection should be carried out when changes occur in the process and materials of the product after identification: major changes occur in the production conditions; and production is resumed after a production interruption of more than 12 months. Samples for Group C inspection can be drawn from any or several batches that have passed Group A and Group B inspections after the last Group C inspection, or samples can be drawn from batches that have passed Group A inspection and Group B and Group C inspections can be carried out at the same time. According to the choice of the contractor, samples that pass a certain group test can be used for another or several other group tests. -9-
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Inspection Item H
CI Group
Temperature Shock
Steady State Damp Heat
Sealing (When Applicable)
End Point Photoelectric Characteristics Test
C2 Group
Sweep Frequency Vibration
End Point Photoelectric Characteristics Test
C3 Group\
Solvent Resistance Test
Leader Strength Test
(When Applicable)
Pigtail (Cable) Tension Load
(Only Applicable to Products with Pigtails and Cables)
Weldability Test
(When Applicable)
C4 Group
MTBF (When Passing)
C5 Group
Electromagnetic compatibility test
(When applicable)
C6 Group
Electrostatic discharge sensitivity test
(When applicable)
C7 Group
Low air pressure (When applicable)
C8 Group*
Salt spray (When applicable)
C9 Group 4
Mold (When applicable)
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Test method
SJ 20786—2000
Table 6 Group C test
GJB 360A Method 107
GJB360AMethod 103
According to regulations
According to regulations
GJB548AMethod 2007
GJB 360AMethod 213
According to regulations
GJB360AMethod 215
GJB360AMethod 211
GJB 1919, 4.6.2.17
GJB 360A method 208
GJB899
GJB152A
GJB1649
GJB548A method 1001
High and low temperature extremes see Table 7
Z1 level: test condition A: Z group: test condition B as specified
as specified
see Table 8, with tail terminal (continued), the axial direction of SMA connector does not need to be subjected to
half-sine shock pulse, rubber value acceleration
pulse width see Table 9, with pigtail (cable), the axial direction of SMA connector does not need to escape
as specified
as specified
clamping method b, pull-off force 10N or as specified, 0.40 m/s traction speed is not required. According to regulations
According to regulations
According to regulations
According to regulations
GJB548A Method 1009AAccording to regulations
GJ 150.10
According to regulations
Sampling requirements
Sample size
(Number of acceptances)
2/ (0)
3 (0)2)
2/ (0)3)
2/ (0)
2/ (0)2)
According to regulations
2/ (0)
11 [0]
SJ20786—2000
Note, 1) The same inspection batch of unqualified products of optoelectronic characteristics can be used. This test sample plan refers to the number of components. Samples that have passed the solvent resistance test can be used for the remaining tests of Group C3. 2) The cutter can adopt the 2(0) scheme, in which each sample is subjected to the test of two braiding agents. 3) 2/0 refers to the number of tested products. A sampling scheme of 15/(0) for the tested lead terminals can also be adopted. 4) When the test samples are only inspected for appearance, the products with unqualified photoelectric characteristics in the same inspection batch can be used. The temperature shock test of Group C1 shall be carried out in accordance with GJB360A Method 107. If there are no other provisions, the number of cycles for Z-level products is 5 times, and the number of cycles for Z1-level products is 10 times. If there are no other provisions, the high and low temperature limits shall be selected from Table 7:
Test conditions
Limit high temperature
Limit low frequency
The frequency sweep test of Group C2 shall be carried out in accordance with GJB360A Method 2007. If there are no other provisions, the acceleration shall be selected from Table 8.
Test conditions
Acceleration
The end-of-impact test of group C2 shall be carried out in accordance with GJB360A Method 213. If there are no other provisions, the peak acceleration and pulse width of the impact pulse shall be selected from Table 9
Test conditions
Peak velocity
4. 11. 4 Intermediate test pulse width for group B and group C tests
After or during the tests of group B and group C, the photoelectric characteristics of each sample shall be tested in accordance with relevant regulations. Unless otherwise specified, if there is a recovery time, the test shall be completed within 24 hours after the recovery time expires. If the recovery time is not specified, it shall be completed within 48 hours after the end of the test.
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niKAoNrkAca4 Intermediate test pulse width for group B and group C tests
After or during the group B and group C tests, the photoelectric characteristics of each sample shall be tested in accordance with relevant regulations. Unless otherwise specified, the test shall be completed within 24 hours after the recovery time is up if there is a recovery time. If no recovery time is specified, the test shall be completed within 48 hours after the end of the test.
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niKAoNrkAca4 Intermediate test pulse width for group B and group C tests
After or during the group B and group C tests, the photoelectric characteristics of each sample shall be tested in accordance with relevant regulations. Unless otherwise specified, the test shall be completed within 24 hours after the recovery time is up if there is a recovery time. If no recovery time is specified, the test shall be completed within 48 hours after the end of the test.
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