Technical Library | 2017-12-11 22:31:06.0
Typical printed circuit board assemblies (PCBAs) processed by reflow, wave, or selective wave soldering were analysed for typical levels of process related residues, resulting from a specific or combination of soldering process. Typical solder flux residue distribution pattern, composition, and concentration are profiled and reported. Presence of localized flux residues were visualized using a commercial Residue RAT gel test and chemical structure was identified by FT-IR, while the concentration was measured using ion chromatography, and the electrical properties of the extracts were determined by measuring the leak current using a twin platinum electrode setup. Localized extraction of residue was carried out using a commercial C3 extraction system. Results clearly show that the amount and distribution of flux residues are a function of the soldering process, and the level can be reduced by an appropriate cleaning. Selective soldering process generates significantly higher levels of residues compared to the wave and reflow process. For conformal coated PCBAs, the contamination levels generated from the tested wave and selective soldering process are found to be enough to generate blisters under exposure to high humidity levels.
Technical Library | 2021-05-20 13:55:14.0
Quality Control is essential in production processes. In the PCB Assembly process there are several Quality Control steps or options. The most popular tests are the electrical (In-Circuit or ICT) and the function (functional or FCT/FVT) test. ICT test fixtures are standardized and there are several major test platforms available which are industry standards. For FCT applications there are many more variations possible due to the vast number of testers and interface approaches unique to each customer; also due to an endless list of applications which fall under the category of Functional Test (RF, High Current, LED test, Leak test etc.) Test Probes are a very important part in ICT as well as in FCT applications. If the wrong test probe (type, spring force, tip style etc.) is used, the test fixture will not work as intended. In addition the test probe must be installed correctly in order to work properly. This presentation will show general information and some guidelines for a proper Test Fixture design to assure the most efficient production.
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New Equipment | Component Counters / SMD Counters
Features : 1.Full automactic counting SMD components ,high accuracy count. 2.Easy operate,designed to prevent tape dropping,minimizing risk of damage to tapes. 3.Count forward and reverse ,double-check feature ensures accuracy,built-in memory allo
Parts & Supplies | Soldering - Wave
Overseas Agent and Distributor Wanted ! Features : Spray Fiuxer: 1) Oriental motor drives the flux spraying system. Spraying speed is adjusted according to PCB board width and moving speed to ensure even spraying all time. 2) Durable “Meiji
Used SMT Equipment | Soldering - Reflow
Note the defect!KE68008521 - Calculator German MaxireflowKE68008130 - Acoustic alarm function (‘horn’) In addition to the red warning light, an acoustic signal is emitted in the event of an alarm.KE68008110 - Wind vane relay for monitoring the ext
Wall washer potting machine Whatsapp 0086 134 2516 4065 online wall washer lap glue dispensing machine/AB glue dispensing machine/ hard led bar glue dispensing machine Applicable glue: One-component silicone, glass glue; two-component silicon
Industry News | 2021-12-01 20:17:46.0
ong-term use of the freezer will cause some large and small problems. The freezer in many people's stores has gradually become aging for some years. In this hot summer, if the commercial freezer in your store suddenly breaks down, is it particularly uncomfortable? The maintenance masters have been late, and the repair prices are very expensive after they come, and many black-hearted repairmen in the freezer industry have to replace many parts for some minor problems, and replacement parts can easily cause hidden dangers. Today, the editor will teach you how to check whether the freezer is aging?
The portable FLUXUS� ADM 6725 flowmeter from Katronic Technologies utilises ultrasonic technology for accurate energy efficiency measurement across a wide range of industries. Climate Change Levy The introduction of the Climate Change Levy will cost
Industry News | 2021-08-25 20:48:32.0
What are the precautions for maintenance of rotary encoders? Rotary encoders are used as speed and displacement feedback sensors, which are mainly applied in servo motors, asynchronous motors, stepper motors, elevator traction machines, and even mechanical shafts. These automatic control field platforms with speed and displacement information feedback ensure the high-precision and stable operation of the machine, thereby improving production efficiency and ensuring safe operation.
