New Equipment | Solder Paste Stencils
For the DIYer, hobbyist or technical researcher there are times where all you need is a simple means to apply solder paste for SMT devices for a few simple boards. In those cases a plastic SMT stencil may be the right solution. Eliminate the tedious
New Equipment | Rework & Repair Equipment
Ultimate Performance, BGA Rework Station for small-large PCBs up to 24"/620mm The PDR E6 XL BGA Rework Station is made of only the finest materials and components for optimum precision and rework excellence. PDR's E6 SMD Rework Station is PDR's larg
Electronics Forum | Mon Apr 12 15:52:12 EDT 2004 | wgaffubar
I am using Indium 92J type 4 solder paste due to a BGA site with .008" pads and stencil opening of .009" square and .005" stencil thickness. When I try the type 3 we get insuffecient print. The aspect ratio tells me that I should be using a type 4. T
Electronics Forum | Thu Apr 29 17:35:17 EDT 2004 | Shinmoto
Hi there, We place FBGA packages on a lot of our memory modules. Our stencils have .013" square apertures and a .005" foil thickness. We are using a type 4 paste from Senju Comtek. The price difference is not that significant and readily available
Used SMT Equipment | Other Equipment
High Speed Cream Solder Mixer (1) This machine main control in part by the microcomputer with the control software to achieve high control precision, speed, anti-interference ability, to ensure the machine's control performance. (2) This machine di
Industry News | 2018-10-18 08:44:36.0
Lead-free Reflow Profile: Soaking type vs. Slumping type
Industry News | 2018-10-18 08:17:09.0
How to Prevent Solder Joint Voiding and Cold Solder Defects during the SMT Reflow Process
Technical Library | 2017-04-13 16:14:27.0
The drive to reduced size and increased functionality is a constant in the world of electronic devices. In order to achieve these goals, the industry has responded with ever-smaller devices and the equipment capable of handling these devices. The evolution of BGA packages and leadless devices is pushing existing technologies to the limit of current assembly techniques and materials.As smaller components make their way into the mainstream PCB assembly market, PCB assemblers are reaching the limits of Type 3 solder paste, which is currently in use by most manufacturers.The goal of this study is to determine the impact on solder volume deposition between Type 3, Type 4 and Type 5 SAC305 alloy powder in combination with stainless steel laser cut, electroformed and the emerging laser cut nano-coated stencils. Leadless QFN and μBGA components will be the focus of the test utilizing optimized aperture designs.
Technical Library | 2020-10-27 02:02:17.0
Solder powder size is a popular topic in the electronics industry due to the continuing trend of miniaturization of electronics. The question commonly asked is "when should we switch from Type 3 to a smaller solder powder?" Solder powder size is usually chosen based on the printing requirements for the solder paste. It is common practice to use IPC Type 4 or 5 solder powders for stencil designs that include area ratios below the recommended IPC limit of 0.66. The effects of solder powder size on printability of solder paste have been well documented. The size of the solder powder affects the performance of the solder paste in other ways. Shelf life, stencil life, reflow performance, voiding behavior, and reactivity / stability are all affected by solder powder size. Testing was conducted to measure each of these solder paste performance attributes for IPC Type 3, Type 4, Type 5 and Type 6 SAC305 solder powders in both water soluble and no clean solder pastes. The performance data for each size of solder powder in each solder paste flux was quantified and summarized. Guidance for choosing the optimal size of solder powder is given based on the results of this study.
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IPC Tech Ed Webinar Series: Ball Grid Array (BGA) and Bottom Termination Component (BTC) Design and Assembly Challenges: Reflow Profiling to Achieve Low Defect Rates and Successful Assembly! – Part 2
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PCB Libraries, Inc. | https://www.pcblibraries.com/Forum/when-should-a-pad-use-windowpane-paste-mask_topic2600_post10599.html
: 05 Jan 2012 Location: San Diego, CA Status: Offline Points: 5184 Post Options Post Reply Quote Tom H Report Post Thanks(0) Quote Reply Posted: 01 Feb 2020 at 4:40pm The Paste Mask reduction is specifically used to prevent the package from sitting on top of a large blob of solder to prevent rocking or teeter-totter so that one side of the package is up in the
GPD Global | https://www.gpd-global.com/lead-free-solder-paste-dispensing.php
. Paste may be leaded or lead free to suit your application requirements. There are four main types of solder paste: Flux type, Metal Makeup, Metal Percentage, and Sphere size (type
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