Used SMT Equipment | Soldering - Reflow
8 Heat Zones Voltage: 480V Max PCB size: 18" Feed Direction: L-R Additional Options: EHC
Used SMT Equipment | Soldering - Reflow
13 Heat Zones Voltage: 480V Max PCB size: 18" Feed Direction: L-R Additional Options: EHC, External Cool
Used SMT Equipment | Soldering - Reflow
8 Heat Zones Voltage: 480V Max PCB size: 18" Feed Direction: L-R Additional Options: EHC, Fan Speed Control
Technical Library | 2023-01-17 17:19:44.0
A test program was developed to evaluate the effectiveness of vacuum reflow processing on solder joint voiding and subsequent thermal cycling performance. Area array package test vehicles were assembled using conventional reflow processing and a solder paste that generated substantial void content in the solder joints. Half of the population of test vehicles then were re-processed (reflowed) using vacuum reflow. Transmission x-ray inspection showed a significant reduction in solder voiding after vacuum processing. The solder attachment reliability of the conventional and vacuum reflowed test vehicles was characterized and compared using two different accelerated thermal cycling profiles. The thermal cycling results are discussed in terms of the general impact of voiding on solder thermal fatigue reliability, results from the open literature, and the evolving industry standards for solder voiding. Recommendations are made for further work based on other void reduction methods and additional reliability studies.
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)
Used SMT Equipment | Soldering - Reflow
10 Heat Zones Voltage: 380V Max PCB size: 18" Feed Direction: L-R Additional Options: EHC, Dual Lane (MFFM), Fan Speed Control, CBS, Reactor, Cool Pipe
Flux Free Formic Reflow Reflow in Formic Acid Vapor Heller has designed and built an production ready horizontal reflow oven for formic acid vapor. This new oven has been designed to meet Semi S2/S8 safety standards (including toxic gases). Form
Convection Reflow Oven The World's Best Convection Reflow Oven for High-Throughput The New reflow oven platform revolutionizes the Convection Reflow Oven / Reflow Soldering industry with several new and ground breaking designs! The MK7 convecti
Technical Library | 2020-01-28 00:23:58.0
This paper explores new advances in the reflow soldering process including vacuum technology and warpage mitigation systems. The first topic for discussion will be the implementation of a vacuum process directly in a conventional inline soldering system. The second topic presented is the mitigation of warpage on substrates or wafers.
Technical Library | 2023-01-17 18:04:51.0
As a manufacturing technology, SMT has acquired a "heritage" of widely accepted assumptions about its processes. However, yesterday'spractices are continually confronted by the shifting paradigms of today's production line.