New Equipment | Rework & Repair Equipment
Allgood Technology is equipped with a range of tools to rework and repair printed circuit assemblies to IPC-A-610 or your own company standards. Major Plant List: Metcal MFR-1351 Desoldering Station for through hole desoldering. Le
New Equipment | Rework & Repair Equipment
BGA Chip Desoldering and Soldering Machine Features: 3 independent control heaters: -Integrated design of top heater with efficient ceramic heater; Air source, including compressed air and nitrogen, is changed freely to meet repairing requests.
Electronics Forum | Wed Feb 01 08:12:04 EST 2006 | Chunks
OK, this is easy. You say HIGH fall out, so I can assume 25 or 50%? If so, run 10 without the heat gun and 10 with. This should show you if the heat gun process is the cause or not. If the relay is a surface mount, hand solder them on. If it's a
Electronics Forum | Tue Jan 31 15:40:44 EST 2006 | mgdrouin1
Comp is relay. I've pulled the spec. Max 240. Using Leister h/g with manual temp settings from 1-6 (20 - 600C)set by the operator. Gun was set to setting 4. They are using the heat gun to reflow the solder after SMT but before wave. High fai
Industry News | 2018-10-18 11:15:12.0
PCB Design and Layout Guidelines
Industry News | 2018-12-08 03:29:29.0
SMT Dictionary – Surface Mount Technology Acronym and Abbreviation
Technical Library | 2019-09-24 15:41:53.0
This paper focuses on three different coating material groups which were formulated to operate under high thermal stress and are applied at printed circuit board manufacturing level. While used for principally different applications, these coatings have in common that they can be key to a successful thermal management concept especially in e-mobility and lighting applications. The coatings consist of: Specialty (green transparent) liquid photoimageable solder masks (LPiSM) compatible with long-term thermal storage/stress in excess of 150°C. Combined with the appropriate high-temperature base material, and along with a suitable copper pre-treatment, these solder resists are capable of fulfilling higher thermal demands. In this context, long-term storage tests as well as temperature cycling tests were conducted. Moreover, the effect of various Cu pre-treatment methods on the adhesion of the solder masks was examined following 150, 175 and 200°C ageing processes. For this purpose, test panels were conditioned for 2000 hours at the respective temperatures and were submitted to a cross-cut test every 500 h. Within this test set-up, it was found that a multi-level chemical pre-treatment gives significantly better adhesion results, in particular at 175°C and 200°C, compared with a pre-treatment by brush or pumice brush. Also, breakdown voltage as well as tracking resistance were investigated. For an application in LED technology, the light reflectivity and white colour stability of the printed circuit board are of major importance, especially when high-power LEDs are used which can generate larger amounts of heat. For this reason, a very high coverage power and an intense white colour with high reflectivity values are essential for white solder masks. These "ultra-white" and largely non-yellowing LPiSM need to be able to withstand specific thermal loads, especially in combination with high-power LED lighting applications. The topic of thermal performance of coatings for electronics will also be discussed in view of printed heatsink paste (HSP) and thermal interface paste (TIP) coatings which are used for a growing number of applications. They are processed at the printed circuit board manufacturing level for thermal-coupling and heat-spreading purposes in various thermal management-sensitive fields, especially in the automotive and LED lighting industries. Besides giving an overview of the principle functionality, it will be discussed what makes these ceramic-filled epoxy- or silicone-based materials special compared to using "thermal greases" and "thermal pads" for heat dissipation purposes.
BGA integrated circuits and chip scale packages, CSPs where the solder connections are not visible. This has arisen as a result of the need for greater numbers of interconnections to integrated circuit packages and as a general result of increasing c
Training Courses | | | PCB Inspection Courses
The PCB inspection courses focus on improving PCB yield and reliability through validation and detection of defects on electronics assemblies.
Thermal Spot Curing of Adhesives with Photonic Energy; a novel fiber delivery method of radiant heating to accelerate the polymerization of thermally active adhesives Thermal Spot Curing of Adhesives with Photonic Energy; A novel fiber delivery
| https://www.eptac.com/blog/5-common-solder-mistakes-and-how-to-resolve-them
. 4. Cold Solder Joint A cold solder joint occurs when the solder does not melt completely. A result of insufficient heat, cold joints are often characterized by being rigid, rough, and uneven in appearance
GPD Global | https://www.gpd-global.com/fluid-dispense-solder-mask-application.php
. Solder mask dispensed by time pressure. Solder Mask Dispensing: Peelable, Washable Peelable Solder Mask Peelable solder mask is a common type of mask and is typically air or heat cure