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inflatable wholesale- inflatable bouncer, inflatable castles, inflatable slides, inflatable water games, inflatable tent
Industry Directory | Distributor
Founded in 1988 in Rochester, NY, Saelig is a North American distributor with a growing reputation for finding and sourcing unique, easy-to-use control and instrumentation products.
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
甲酸蒸气中无助焊剂的甲酸回流炉 Heller设计并制造了可用于甲酸蒸汽水平式无助焊剂甲酸回流焊炉。这款新烤箱的设计符合Semi S2 / S8安全标准（包括有毒气体）。 已证明甲酸是无助焊剂回流中的有效还原剂 卧式回流炉中的优异结果证明晶圆凸块应用 无助焊剂回流利用气相甲酸（HCOOH）代替标准助焊剂 消除了回流前助焊剂和回流后助焊剂清理步骤的需要 没有回流后助焊剂清洗，可增进环氧树酯和在线环氧树酯固化方案 生产级烤箱已经证明了可行性 在安全，精确地输送甲酸和减排方面进行了大
Electronics Forum | Fri Oct 05 07:31:29 EDT 2001 | furrer
When tenting vias almost a few vias are not covered completly by Solder Mask. Does this one side open vias affect the Immersion Tin Process ? Do we get chemical residues in the vias ?
Electronics Forum | Sat Oct 06 08:27:24 EDT 2001 | davef
Yes, some solder masks do not tent well, because the material is too thin. That�s the trade-off. Thin masks: * Conform well to [don't bleed onto] fine pitch features. * Tent vias poorly, requiring an additional "plugging" step. As you imply, if th
Industry News | 2019-11-05 22:07:01.0
Tenting a via refers to covering via with soldermask to enclose or skin over the opening. A via is a hole drilled into the PCB that allows multiple layers on the PCB to be connected to each other. A non tented via is just a via that is not covered with the soldermask layer. Leaving these vias exposed or covered has pros and cons depending on the your design and manufacturing requirements.
Industry News | 2018-10-18 10:40:04.0
Via Tent-Holes with Solder Mask
Technical Library | 2019-05-29 01:47:22.0
1.Vias near SMD pads: Solder can flow into the via after melted. As a result cold joint will appear in the end. Check the picture below. 2.Vias on SMD pads: Solder can flow into the via more easier after melted. Check the picture below. 3.Via opening without soldermask covered. When workers solder TH parts by hand, soldering iron can touch vias sometime, then tiny amounts molten solder will stay on vias. This can lead to electrical short easily. We recommend you make all vias tenting (covered by solder mask) if it is possible.
PCBNPI-Professional PCB Fab/PCB Assembly Service Provider From China
Nano-copper sintering in formic acid vapor.
| http://etasmt.com/cc?ID=te_news_bulletin,23566&url=_print
use any reflow profile (e.g., tent or soak profile) with formic acid Can adjust formic acid profile in oven in conjunction with thermal reflow profile Includes Formic acid safety system (i.e., sensors/detectors
40731 | https://www.smta.org/harsh/Harsh-Environments-Conference-2020-Sponsorships&Exhibits.pdf
Surface Mount Technology Association (SMTA)
