红墨水试验
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Huanan Testing & Measurement Laboratories
SMT Quality Analysis Lab Test Report
Test Number: S0701353
Product/part: RY946
Applicant: PCEBG/DMD(I)/DMD
Test Items: Cross Section, Dye & Pry
Temp. /RH: (23±5) ℃/(40~85) %RH
Date: 2007/6/2
Approved by: Checked by: Prepared by:
Micro Hong Arrow Jiang Rongrong Luo
Notes: 1. This report is only applicable to the delivered samples. 2. Partial copy this report is prohibitive if not approved by SMT Lab.
Lab Name: Hon Fujin precision technology (Shenzhen) corp. limited, SMT Quality Analysis Lab.
Address: 10th Yousong Industrial District, Longhua Sub-district, Baoan, Shenzhen, Guangdong, China.
Tel: (86755)27706168-61966 or 61968 Fax: (86755)27706168-61920
1. Introduction
Two pieces of RY946 were received from PCEBG/EPD/Engineering, One piece for cross section analysis and the other for dye & pry analysis. The specimens to be tested were specified as follows:
2. Sample Information
2.1 Cross Section
PPID Cross Section
CN-0RY946-13740-75T-003C U9
2.2 Dye & Pry
PPID Dye & Pry
CN-0RY946-13740-75T-001E U9
3. Test Procedure
3.1 Cross Section
The preparing procedure is conformed to IPC-TM-650 2.1.1. First used precision cutter to cut out the components from the Plum RY946, and then vacuum encapsulated in epoxy after ultrasonic cleaning, finally when finished grinding and polishing used the metallurgical microscope to inspect the cross section.
3.2 Dye & Pry
The preparing procedure is described as follow. Use a solvent with a spray to clean the flux residue, immerse the sectioned sample in the dye then place it into vacuum chamber to aid in dye penetration. Dry the sample in an oven by baking at 65℃for up to 3 hours. The component is removed by mechanical method. Use microscope to examine the board and part, take photos of dyed regions.
4. Test Location
4.1 Cross Section
Row2
U9
4.2 Dye & Pry
5. Test Results
5.1 Cross Section
PPID
Cross Section
Results Standard Remark CN-0RY946-13740-7
5T-003C U9
Defect
IPC-A-610D Class 2
Refer to Figure 1
5.2 Dye & Pry
PPID Dye & Pry
Results
Fracture Type Crack area Remark Type4
Type B Refer to Figure 2-1 Type4 Type B Refer to Figure 2-2 CN-0RY946-13740-75T-001E
U9 Have crack Type4
Type D
Refer to Figure 2-4
U9
5.3 Dye results in a matrix
ID: CN-0RY946-13740-75T-001E (U9)
AJ A A AJ 1
29
1
29
PWB Side Component Side
Type 0 = No cracks observed
Type A = Crack size percentage between 1~25%
Type B = Crack size percentage between 26~50%
Type C = Crack size percentage between 50~75%
Type D = Crack size percentage between 76~100% No cracked
Type 1: Crack between Cu pad on component and component substrate
Type 2: Crack between BGA sphere and Cu pad on component
Type 3: Crack between BGA sphere and Cu pad on PWB
Type 4: Crack between Cu pad on PWB and PWB laminate
Fracture Type Number %Total
No fracture787 93.58
Type 1 0 0.0
Type 2 1 0.12
Type 3 1 0.12
Type 4 52 6.18
Total 841 100
Crack Size Number %Total
Type 0787 93.58
Type A 15 1.78
Type B 7 0.83
Type C 3 0.36
Type D 29 3.45
Total 841 100