Technical Library | 2023-01-17 17:27:13.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force. Specifically, the effect of the reflow peak temperature and time above solder liquidus temperature are studied. Nine reflow profiles for SAC 305 and nine reflow profiles for SnPb have been developed with three levels of peak temperature (230 o C, 240 o C, and 250 o C for SAC 305; and 195 o C, 205 o C, and 215 o C for SnPb) and three levels of time above solder liquidus temperature (30 sec., 60 sec., and 90 sec.). The shear force data of four different sizes of chip resistors (1206, 0805, 0603, and 0402) are compared across the different profiles. The shear force of the resistors is measured at time 0 (right after assembly). The fracture surfaces have been studied using a scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS)
New Equipment | Solder Materials
Tokyo, Japan – Koki Company Limited, global manufacturer and supplier of soldering materials, announces the release of new low Ag containing halogen free solder pastes that secures the equivalent joint reliability and heat profile to SAC305, namely S
Industry News | 2022-07-16 08:39:50.0
SHENMAO America, Inc. is pleased to announce that the PF918-S Lead-Free BGA Sphere features the newly designed high-reliability alloy PF918 that can achieve tensile strength performance 1.4 times higher than the typical SAC305 alloy.
New Equipment | Solder Materials
As the world's leading developer of advanced solder paste materials, Henkel delivers decades of technology and expertise for optimized process performance. With ground breaking new formulations to provide an easy transition to lead-free as well as pr
Industry News | 2022-10-11 17:22:18.0
SHENMAO America, Inc. has successfully developed a no-clean high thermal impact reliability solder paste. PF918-PW216 solder paste adopts the newly designed high reliability lead-free alloy (Sn/4Ag/3Bi) that achieves tensile strength performance 1.4 times higher than typical SAC305 alloys.
Industry News | 2023-01-09 18:39:37.0
With its rule-breaking wave solder alloy, SN100C, Nihon Superior Co., Ltd. earned global recognition as an innovator in lead-free solder formulation. The rule that SN100C broke was that you can't make a Pb-free solder without a silver content that doubles the cost of the raw materials. Now Nihon Superior has broken that rule again with SN100CV, a reflow soldering alloy that can outperform SAC305 in reliability while being reflowable with the same thermal profile as SAC305.
Technical Library | 2010-04-29 21:40:37.0
The purpose of this paper is to investigate the effects of reflow time, reflow peak temperature, thermal shock and thermal aging on the intermetallic compound (IMC) thickness for Sn3.0Ag0.5Cu (SAC305) soldered joints.
New Equipment | Solder Materials
Superior Drop Shock Performance AND Thermal Cycling Reliability Current Industry Dilemma The standard set of Pb-free alloys has a dramatic trade-off between thermal cycling and drop testing. Additionally, all these SAC alloys are far inferior to
Technical Library | 2007-03-08 19:31:10.0
Reflow profile has significant impact on solder joint performance because it influences wetting and microstructure of the solder joint. The degree of wetting, the microstructure (in particular the intermetallic layer), and the inherent strength of the solder all factor into the reliability of the solder joint. This paper presents experimental results on the effect of reflow profile on both 63%Sn 37%Pb (SnPb) and 96.5%Sn 3.0%Ag 0.5%Cu (SAC 305) solder joint shear force.
Industry News | 2021-06-08 03:45:26.0
SHENMAO America, Inc. is pleased to introduce its PF918-P250Thermal Fatigue Resistance Lead-free Solder Paste. The new paste is formulated with the new SHENMAO Sn/4Ag/3Bi Alloy design with high thermal impact reliability.
