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焊点失效分析技术及案例.pdf

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失效 分析 技术 案例
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1 0086-2087237161,luodj@ceprei.com Ceprei-Rac----www.rac.ceprei.comPCBA (Printed Circuit Board Assembly ) 1.0 PCBA PCB Ceprei-Rac----www.rac.ceprei.comSource: U.S. Air Force Avionics Integrity Program 1.1 PCBA Ceprei-Rac----www.rac.ceprei.com 1.2 PCBA Ceprei-Rac----www.rac.ceprei.com1.3 PCBA PCB Ceprei-Rac----www.rac.ceprei.comθ σ lg σ ls σ gs Pad(Device PCB) Gas solder 1.3.1 2 Ceprei-Rac----www.rac.ceprei.com1.4 PCBA 1 Solder Joint Stress / Strain from Thermal Cycles Ceprei-Rac----www.rac.ceprei.com1.4 PCBA 2 Solder Joint Stress / Strain from Vibration Ceprei-Rac----www.rac.ceprei.com1.5 PCBA 2.PCB 1. 3. 4. 5. 6. SIR Ceprei-Rac----www.rac.ceprei.com2.0 1 PCBA X Ceprei-Rac----www.rac.ceprei.com SEM/EDS FT IR PCB 2.0 2 Ceprei-Rac----www.rac.ceprei.com2.1 PCBA PCB 3 Ceprei-Rac----www.rac.ceprei.com3.0 1. Visual Inspection 2.X X Ray Inspection 3. Microsection Inspection 4. C SAM Inspection 5. IR Thermal Image 6. FT IR Microscopy 7. EDX& SEM 8. Dye & Pry Testing Ceprei-Rac----www.rac.ceprei.com1. 2. 3. 4. 3.1 Visual Inspection Ceprei-Rac----www.rac.ceprei.com3.2 X Ray Inspection 1. 2. 3. BGA CSP 4.PCB Feinfocus X-ray Inspection System : FXS-160.40 3DX 1 Ceprei-Rac----www.rac.ceprei.com3.2.1 X ray Inspection x x x x x μBGA: . X Ceprei-Rac----www.rac.ceprei.com3.2.2 X Ray Inspection x x x x A BGA 1020 (32x32) Ceprei-Rac----www.rac.ceprei.com3.2.3 X Ray Inspection x x x x x 4 Ceprei-Rac----www.rac.ceprei.com3.3 Microsection Inspection IPC TM 650 2.1.1 1 Ceprei-Rac----www.rac.ceprei.com3.3.1 1 Ceprei-Rac----www.rac.ceprei.comBGA 3.3.1 2 Ceprei-Rac----www.rac.ceprei.com3.3.1 2 Ceprei-Rac----www.rac.ceprei.com3.4 C SAM Inspection 1. 2.FCOB Delamination Ceprei-Rac----www.rac.ceprei.com3.5 IR Thermal Image 1.PCBA 2. 5 Ceprei-Rac----www.rac.ceprei.com3.6 FT IR Microscopy 1. 2. Ceprei-Rac----www.rac.ceprei.com3.7 EDX& SEM 1. 2. Ni EDX SEM FPC pad Ceprei-Rac----www.rac.ceprei.com3.8 Dye & Pry Testing Dye Ink Penetrant Inspection BGA PCB Ceprei-Rac----www.rac.ceprei.comThe Results Shown in Mapping 3.8.1 Ceprei-Rac----www.rac.ceprei.com3.8.2 Partially cracked but still conductive prior to testing Cracked/open prior to testing Component PCB Ceprei-Rac----www.rac.ceprei.comFA Case1: MP3 FA Case2 FPC 1853 FA Case3 CMOS/CS 1773 FA Case4 THT 1727 FA Case5 PCBA PLCC 1776 FA Case6 PHS PCBA 1636 FA Case7 PCB 1690 4. 6 Ceprei-Rac----www.rac.ceprei.com4.1 MP3 (1) Ceprei-Rac----www.rac.ceprei.com4.1 MP3 (2) Ceprei-Rac----www.rac.ceprei.com OK 4.1 MP3 (3) Ceprei-Rac----www.rac.ceprei.com ENIG Finish Pad Au Coating SEM 4.1 MP3 (4) Ceprei-Rac----www.rac.ceprei.com 01 SEM “ ” Au Ni 4.1 MP3 (5) Ceprei-Rac----www.rac.ceprei.com 02 EDX P 4.1 MP3 (6)7 Ceprei-Rac----www.rac.ceprei.com PCB “ ” PCB ENIG Finish Pad Cu LAMINATE Ni Au 4.1 MP3 (7) Ceprei-Rac----www.rac.ceprei.com4.2 4.2.1 Ceprei-Rac----www.rac.ceprei.com4.2.2 Ceprei-Rac----www.rac.ceprei.com4.2.3 X ray Ceprei-Rac----www.rac.ceprei.com4.2.4 Dye & Pry Ceprei-Rac----www.rac.ceprei.com4.2.5 (1) 8 Ceprei-Rac----www.rac.ceprei.com4.2.5 (2) Ceprei-Rac----www.rac.ceprei.com4.2.6 Ceprei-Rac----www.rac.ceprei.com4.2.7 SEM & EDX Ceprei-Rac----www.rac.ceprei.com4.2.8 Pad SEM 2 Ni Coating Au Coating Ni Coating Ceprei-Rac----www.rac.ceprei.com4.2.9 Ceprei-Rac----www.rac.ceprei.com4.2.10 ? PCB BGA ? BGA BGA PCB ? PCB 9 Ceprei-Rac----www.rac.ceprei.com4.3 PCBA 1 Ceprei-Rac----www.rac.ceprei.com4.3 PCBA 2 Ceprei-Rac----www.rac.ceprei.comAcknowledge www.rac.ceprei.com TEL:020-87237173 FAX:020-87237185
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