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professional manufacturer of pcb
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Ludee Circuits offer RoHS PCB.We could offer leadfree HASL,Entek, flash gold, immersion gold, immersion silver, immersion tin finishing based on standard FR-4, CEM-3 materials, Teflon, Rogers RO4000 series, as well as high Tg S1170 materials.
1) Single Sided PCB 2) Material ranges: FR-1, 94VO/HB, 22nf, CEM-1 and CEM-3, FR-4 3) Copper weight: 1-2 oz 4) Profile: Punch 5) Thickness: 0.8mm-1.6mm 6) Surface finish: OSP, HASL, Immersion Gold
General specification for Microwave/RF PCB Layer count: 1-6 Board thickness: 0.2-3.2mm Copper thickness: 0.5-4oz Dielectric Constant(DK): 2.2-10.3 Min trace width/spacing: 4/4mil Min drill hole size: 0.2mm Surface treatment: HAL(Lead free), I
Electronics Forum | Fri Oct 20 14:13:32 EDT 2000 | DENNIS XIONG
Dear all, We have a PCB design mistake that causes exposed copper layers on the edges of breakaway locations. Although we fixed the design, but we already made a lot of boards plus many made before we found the problem. I wonder if any one have some
Electronics Forum | Thu Jan 22 08:48:42 EST 2004 | patrickbruneel
Kris, You will need to change your probes to "bite" into the surface twisting probes specialy designed for copper surfaces. The surface hardness of copper is a lot higher compared to tin. link to article from osp manufacturer (see page 5) http://www
Industry News | 2014-10-01 15:59:00.0
PCB provider Cirtech Electronics located in Cape Town, South Africa will be liquidating their assets utilizing the online auction services of GoIndustry and Baja Bid. Bidding for the auction will open promptly at 8:00am PDT on October 7th, 2014 and will begin closing at 6:00am PDT on October 14th, 2014.
Industry News | 2014-10-10 16:27:51.0
CB provider Cirtech Electronics will be liquidating their assets utilizing the online auction services of GoIndustry and Baja Bid.
Parts & Supplies | Circuit Board Assembly Products
1). Material: CEM-1/CEM-3, 2). Single sided, 1.6mm material 3). 1 oz copper finished 4). Green solder mask/white silkscreen letter 5). OSP surface finish 6). Punched contour
Parts & Supplies | Circuit Board Assembly Products
1) Single Sided PCB 2) Material: XPC (94HB), FR-1 (94V0) 3) Thickness: 1.0mm, 1.2mm, 1.6mm 4) Copper weight: 0.5 oz, 1 oz 5) UV solder mask 6) Profile: Punch/ rout 7) Surface finish: OSP, Electro Gold
Technical Library | 2019-06-11 09:36:13.0
An experiment was recently performed ACI Technologies for a customer that was interested in comparing the wetting of lead-free solders with varying temperature profiles and atmospheric conditions. In order to deliver an objective measurement of solder wetting (in addition to subjective inspection analysis), a simple wetting indicator pattern was added to the solder stencil in an area on the test vehicle that had exposed and unused copper.
Technical Library | 2019-06-04 10:19:46.0
Interconnection technology relies very heavily on the ability of the conductors on a printed wiring assembly to maintain reliable signal integrity. Harsh environmental factors can precipitate a loss of conductivity due to oxidation and corrosion. Connections are typically soldered or inserted using pressure fitted connectors to obtain enough surface contact to meet the electrical conductivity requirements. In pressure contacts, surface integrity is especially critical where the abrasive effects of retraction and insertion can wear off the metallic finish from the contact area. This can expose the underlying copper or nickel and lead to increased resistance at the contact points. These types of conductors are frequently found in card edge connectors where the terminations are plated with a layer of nickel and gold (frequently referred to as gold fingers). A hard gold is typically used containing very small amounts of nickel and cobalt to increase the wear resistance.
A Sustainable Alternative - Humitector cards are halogen-free and cobalt dichloride free. Visit https://www.clariant.com/solutions/products/2017/10/31/00/12/humitector-type-2-nonreversible-humidity-indicator-card?utm_source=CLRYouTube&utm_medium=Vi
This video demonstrated the use of BEST Inc HotDots(TM) which allow wires to be affixed to the PCB or other surfaces-even when those surfaces go through reflow. There are other similar products out there but none of which can be readily customized no
Career Center | Shen Zhen, China | Management,Sales/Marketing
Working in GLORYPCB for 10 years.knowing electronic supply chain very well. especially for PCB PCBA assembly and other Electronic Manufacturing Service.Glorypcb is a professional electronic manufacturer located in Shenzhen with three facilities.offe
applied to exposed Cu connectors and conductors on
Imagineering, Inc. | https://www.pcbnet.com/blog/how-pcbs-are-made/
: Areas of exposed copper on the PCB. They provide a stable and conductive surface for solder joints. PCB Design Phase PCBs are usually designed by companies that create electronic devices and assembled by dedicated PCB manufacturers like Imagineering
| https://www.eptac.com/faqs/ask-helena-leo/ask/post-lead-trimming-reflow-requirements
. Exposed basis metal shall not prevent the formation of an acceptable solder connection Exposed Organic Solderability Preservatives (OSP) shall not prevent the formation of an acceptable solder connection
