全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
材料工程  2013 

银含量对跌落条件下无铅焊点疲劳寿命和失效模式的影响

DOI: 10.3969/j.issn.1001-4381.2013.12.014, PP. 74-79

Keywords: 银含量,跌落冲击,失效机理,疲劳寿命

Full-Text   Cite this paper   Add to My Lib

Abstract:

对3种不同Ag含量材料(Sn-3.0Ag-0.5Cu,Sn-1.0Ag-0.5Cu,Sn-0.3Ag-0.7Cu)的焊点进行跌落实验,实验中施加的加速度载荷为峰值3200g,脉冲持续时间1ms的半正弦波形加速度,利用电学测试、光学显微镜和扫描电子显微镜确定了失效的焊点并对失效焊点进行分析。结果表明3种材料焊点的失效位置基本都在靠近印刷电路板(PCB)侧,BAG封装最外围4个拐角处的焊点最先失效。Sn-3.0Ag-0.5Cu,Sn-1.0Ag-0.5Cu焊点的失效模式均为脆性断裂,Sn-0.3Ag-0.7Cu为韧-脆混合断裂。且随着Ag含量的降低,金属间化合物(IMC)的厚度逐渐减小,焊点的寿命逐渐提高。

References

[1]  尹立孟, 位松, 李望云. 电子封装用低银含量无铅钎料的研究和应用进展[J] 焊接技术, 2011, 40(2):1-5.YIN L M, WEI S, LI W Y. Research and application of low silver content lead-free solder in electronic packaging[J]. Welding Technology, 2011, 40(2):1-5.
[2]  郭强.振动冲击条件下SMT焊点疲劳寿命与可靠性的理论与实验研究[D].上海:上海交通大学, 2005.
[3]  WU J, SONG G S, YEH C P, et al.Drop impact simulation and test validation of telecommunication products[A].Inter Society Conference on Thermal Phenomena[C].Piscataway:IEEE, 1998.330-336.
[4]  LIM C T, LOW Y J.Investigating the drop impact of portable electronic products[A].Electronic Components and Technology Conference[C].Piscataway, USA:IEEE, 2002.1270-1274.
[5]  LEE J G, SUBRAMANIAN K N. Effect of dwell times on thermomechanical fatigue behavior of Sn-Ag based solder joints[J]. Journal of Electronic Packaging, 2003, 32(6):523-530.
[6]  SHANGGUAN D K. Analysis of crack growth in solder joints[J]. Soldering & Surface Mount Technology, 1999, 11(3):27-32.
[7]  TU P L, CHAN Y C, LAI J K L. Effect of intermetallic compounds on the thermal fatigue of surface mount solder joints[J]. IEEE Components, Packaging and Manufacturing Technology Society, 1997, 20(1):87-93.
[8]  WU J, SONG G S. Drop impact simulation and test validation of telecommunication products[A].Inter Society Conference on Thermal Phenomena[C]. Piscataway, USA:IEEE, 1998.330-336.
[9]  LIM C T, LOW Y J.Investigating the drop impact of portable electronic products[A]. Electronic Components and Technology Conference[C]. Piscataway, USA:IEEE, 2002.1270-1274.
[10]  周新.板级无铅焊点跌落冲击载荷下可靠性分析[D].上海:上海交通大学, 2007.
[11]  瞿欣, 娄浩焕.BGA焊点在板级跌落实验中的疲劳寿命估计[J].封装测试技术, 2006, 31(6):2-5. QU X, LOU H H. Fatigue life assessment of solder joints of BGA component in board level drop test[J]. Package & Test Technology, 2006, 31(6):2-5.
[12]  王文. SMT 无铅焊点在随机振动载荷下的可靠性分析[D].上海:上海交通大学, 2010.
[13]  李晓延.金属间化合物对SnAgCu/Cu界面破坏行为的影响[J].机械强度, 2005, 27(5):666-671. LI X Y. Influence of IMC on the interface failure of tin-silver-copper solder joints[J]. Mechanical Strength, 2005, 27(5):666-671.
[14]  DUAN N, SCHEER J, BIELEN J, et al. The influence of Sn-Cu-Ni(Au) and Sn-Au intermetallic compounds on the solder joint reliability of flip chips on low temperature co-fired ceramic substrates[J]. Microelectronics Reliability, 2003, 43(8):13-17.
[15]  ZENG K, TU K N. Six cases of reliability study of Pb-free solder joints in electronic packaging technology[J]. Materials Science and Technology, 2002, 38(2):55-101.
[16]  FOLEY J C, GICKLER A, LEPREVOST F H, et al. Analysis of ring and plug shear strengths for comparison of lead-free solders[J].Journal of Electronic Materials, 2000, 29(10):1258-1263.
[17]  SALAM B, EKERE N N, RAJKUMAR D. Study of the interface microstructure of Sn-Ag-Cu lead-free solders and the effect of solder volume on intermetallic layer formation[A]. 2001 Electronic Components and Technology Conference[C]. Oxlando, USA:Institue of Electrical and Electronic Engineers Inc, 2001.471-477.
[18]  何大鹏. 合金元素对二元Sn基钎料钎焊界面IMC的影响[D].大连:大连理工大学, 2005.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133