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 17:22:28.0
The impact of voiding on the solder joint integrity of ball grid arrays (BGAs)/chip scale packages (CSPs) can be a topic of lengthy and energetic discussion. Detailed industry investigations have shown that voids have little effect on solder joint integrity unless they fall into specific location/geometry configurations. These investigations have focused on thermal cycle testing at 0°C-100°C, which is typically used to evaluate commercial electronic products. This paper documents an investigation to determine the impact of voids in BGA and CSP components using thermal cycle testing (-55°C to +125°C) in accordance with the IPC- 9701 specification for tin/lead solder alloys. This temperature range is more typical of military and other high performance product use environments. A proposed BGA void requirement revision for the IPC-JSTD-001 specification will be extracted from the results analysis.
Technical Library | 2023-08-16 18:16:05.0
A global aerospace and defense leader requested a capability test of small volume solder paste dispensing on FR4 circuit boards.
Technical Library | 2023-08-16 18:09:06.0
One of our customers involved with Electronics and Aerostructures requested a test to dispense Techspray Wondermask 2204 solder mask. The dispensing locations include large and small screw holes, single through-hole vias, and connector locations consisting of multiple through-hole vias. The process needed to run quickly and reliably.
Technical Library | 2023-09-07 14:38:31.0
A repeat customer specializing in high-technology interconnect, sensor, and antenna solutions, partnered with us to dispense small volumes of solder paste (Indium 10.1 SAC305 T6SG 78%m) onto backplane connectors – gold pads 0.175mm x 0.225mm. We performed a test requiring 0.200mm diameter or smaller dots to demonstrate the dispensing capability required.
Technical Library | 2023-09-16 03:40:41.0
Wave soldering machines are the most efficient way to solder PCBs. They are used to solder components to a PCB by passing the PCB through a wave of molten solder. This process is fast, accurate, and repeatable, making it ideal for mass production. In this article, we will discuss the basics of wave soldering machines, including their components, operation, and benefits. We will also provide a buying guide to help you choose the right wave soldering machine for your needs.
Technical Library | 2023-09-16 06:12:26.0
Discover our cost-effective wave soldering machine designed to streamline your PCB assembly process without breaking the bank. Achieve quality soldering with affordability.
Technical Library | 2023-09-16 06:04:19.0
Off-line selective wave soldering machines are the best way to solder complex PCBs. They allow you to solder only the components that need to be soldered, saving time and material.
Technical Library | 2023-09-16 06:10:57.0
Explore our range of selective wave soldering machines to enhance your PCB assembly process. Achieve precise soldering and superior quality for your electronics manufacturing needs.
Technical Library | 2023-09-16 06:11:05.0
Explore our range of selective wave soldering machines to enhance your PCB assembly process. Achieve precise soldering and superior quality for your electronics manufacturing needs.
