600V *RO4350B *RO4003C Dielectric material & Stack up requirement FR-4(no copper): 0.05-3.2mm for option Prepreg type: 7628H(7630), 7628(43%), 7628(41%), 2116HR, 2116, 2113, 1080 and 1060 for option Copper
Industry Directory | Manufacturer
Auspi Enterprises Co., Ltd., one of the professional suppliers of printed circuits in China. We found your company info on the web knowing that you're dealing with electronics, which we think you may have demand on pcbs.
Materials: FR4 ,Aluminium,FPC layer: 1-12 Board thickness: 0.4-4.2mm Copper:0.5-3oz Finishing: Plating gold,immersion gold,immersion silver,Pb free HAL,OSP, Min.hole size: 0.10mm(Blind and burried hole available) Min. Line/Space: 0.10mm/0.10mm The
Bicheng provides R&D, high-tech, IT research companies and organizations large or small with high frequency RF/microwave PCB's. Technical parameters: *NPTH and PTH( 20 um) *Thermal stress: 288C/10sec *Permitivity: ER2.1-1
Layers: 1-20L Material Types: FR-4, High TG, Halogen Free Max.Panel Dimension: 530mm*622mm Outline Tolerance: ±0.10mm Board Thickness: 0.40mm-3.20mm Board thickness Tolerance(t=0.8mm):±10% Width: 0.10mm Spacing: 0.10mm External: 35um-140um Int
Technical Library | 2016-07-07 15:37:18.0
How susceptible are the metals used in modern electronics manufacturing to corrosion by common beverages? This is a question of interest, especially to manufacturers, retailers and to a certain extent end customers. In this study the dissolution of aluminum, copper, gold, iron, lead, nickel, SAC305 solder, silver, tin and zinc was examined. Individual foils of these materials were fully immersed in one of sixteen chosen beverages and heated for 3 days at 40°C. The resulting solutions were analyzed using ICP-OES. The data were examined in light of the known pH, conductivity and ionic contents of the beverages, determined in previous work. Conclusions about the relative susceptibility to corrosion of the various metals and the corrosive power of the different beverages are made.
Technical Library | 2023-04-25 22:03:25.0
This report hopes to achieve several goals: 1. Determine the link between bare PWB contamination, soldered assembly contamination and long-term product reliability. 2. Establish measurable limits for bare PWB cleanliness as well as process control limits for both an aqueous as well as a water-soluble soldering process. 3. Determine whether there is any correlation between common, industry-accepted rose/modified rose (omegameter/ionograph type) testing and long term product reliability. 4. Determine the effect PWB plating finish (HASL, Immersion Silver and Cu OSP) has on both bare PWB contamination as well as soldered assembly in a no clean and water soluble process. 5. Determine whether there is a link between percentage of saponifier used to wash soldered assemblies and long-term reliability. 6. Establish a more cost-effective test for manufacturers to use as a process-monitoring tool.
New Equipment | Assembly Services
TW-Multilayer PCB 0123 Price: Get Latest Price Minimum Order Quantity: 10 Unit/Units other Port: HK Packaging Details: blister and package Delivery Time: 1 week Payment Terms: L/C,D/P,T/T,Western Union Supply Ability: 5000000 Unit/Units per Y
New Equipment | Assembly Services
TW-Aluminum PCB 0201 Price: Get Latest Price Minimum Order Quantity: 10 Unit/Units other Port: HK Packaging Details: blister and package Delivery Time: 1 week Payment Terms: L/C,D/P,T/T,Western Union Supply Ability: 5000000 Unit/Units per Y
Technical Library | 2018-07-11 22:46:13.0
For a demanding automotive electronics assembly, a highly thermal fatigue resistant solder alloy is required, which makes the lead-free Sn-Ag-Cu type solder alloy unusable. Sn-Ag-Bi-In solder alloy is considered as a high reliability solder alloy due to significant improvement in thermal fatigue resistance as compared to a standard Sn-Ag-Cu alloy. The alloy has not only good thermal fatigue properties but it also has superior ductility and tensile strength by appropriate addition of In; however, initial results indicated a sub-par performance in joint reliability when it is soldered on a printed circuit board (PCB) with Electroless Nickel Immersion Gold (ENIG) surface finish. Numerous experiments were performed to find out appropriate alloying element which would help improve the performance on ENIG PCBs. Sn-Ag-Bi-In solder alloys with and without Cu additions were prepared and then tests were carried out to see the performance in a thermal fatigue test and a drop resistance test.to investigate the impact of Cu addition towards the improvement of joint reliability on ENIG finish PCB. Also, the mechanism of such improvement is documented.
