1). Size: 45*140mm/1 up 2). Layer count: 2 Layer, 20 μm PTH 3). Thickness: 1.6mm +/- 10% 4). Copper weight(Finished): 35 μm 5). SMOBC: LPI Green solder mask/ White legend 6). Holes: 0.4mm minimum, 4/4 mil track/space 7). Pads finish: HASL 8).
FPCB Assembly Fulfill flex PCB orders of 20 Layers Maximum High-quality, quick turn flexible printed circuit boards manufacturing services. With proven processes and a full range of services such as: Line Width/Space in the Inner Layer: 3/3mil
Electronics Forum | Wed Jun 23 18:23:32 EDT 1999 | Tom B.
Even though you may find a pad-pad thru-hole spacing, part body size, orientation, and insertion head tooling clearences may be the deciding factor in spacing. 1. Part body diameter will dictate component centroid spacing. ---[
Electronics Forum | Wed Jun 23 15:49:30 EDT 1999 | Kelly Morris
In the IPC-SM-782 (Surface Mount Design and Land Pattern Standard) it recommends a minimum of .040" between bottomside wavesoldered chip pads. Where might I find a similar IPC recommendation for minimum space between thru-hole pads? Does anyone kno
Industry News | 2012-03-09 16:13:42.0
Seika Machinery will highlight its new, innovative products at the upcoming SMTA Indiana Expo & Trade Forum.
Industry News | 2012-01-30 13:43:45.0
Seika Machinery will highlight many new, innovative products at the upcoming SMTA Dallas Expo and Tech Forum.
Technical Library | 2009-07-01 09:24:25.0
During the last 5 years, the processes to remove flux residues especially for lead-free and challenging geometries have demonstrated new cleaning obstacles which have to be overcome.i A new methodology has been recently developed to further increase the propensity for successful cleaning.ii At the core of this method is the thermal identification of the residue matrix. Thermal energy changes the physical state, i.e. transitions between liquid, solid and gas phases. By taking advantage of such specific information during phase transitions, the cleaning process can be tailored to such settings, which in turn increases the cleaning success significantly.
Technical Library | 2017-07-27 16:51:57.0
Reliability Expectations of Highly Dense Electronic Assemblies is commonly validated using Ion Chromatography and Surface Insulation Resistance. Surface Insulation Resistance tests resistance drops on both cleaned and non-cleaned circuit assemblies. It is well documented in the literature that SIR detects ionic residue and the potential of this residue to cause leakage currents in the presence of humidity and bias. Residues under leadless components are hard to inspect for and to ensure flux residue is totally removed. The question many assemblers consider is the risk of residues that may still be present under the body of components.
With the development of miniaturization of assembly components, the layout area and pattern design area of PCBs have also been continuously reduced, and PCB manufacturers are constantly updating the production process to conform to the development tr
SMTnet Express, December 27, 2019, Subscribers: 33,251, Companies: 10,949, Users: 25,451 A Life Prediction Model of Multilayered PTH Based on Fatigue Mechanism Credits: Beihang University PTH plays a critical role in PCB reliability. Thermal
SMTnet Express, August 13, 2015, Subscribers: 23,186, Members: Companies: 14,558 , Users: 38,745 Pad Cratering Susceptibility Testing with Acoustic Emission Wong Boon San, Julie Silk; Agilent Technologies
. Special Thicknesses, Rolls and Sheets Sil-Pad 400 can be supplied on special order in a variety of thicknesses from .007 to .045 inches to fulfill special requirements of insulation path minimums or other spacing needs
:06:40 PM February 28, 2018 writer: G 1. Pad spacing requirements: Should be avoided as far as possible in the fine pitch components between the pads through the connection, indeed need to cross the connection between the pads, the use of solder mask to be a reliable cover. 2. Pad Length