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Quick turn Prototype PCBs from 24 hour turnaround to high volume printed circuit board production from our domestic plant in USA and/or China facilities. Our Modern 38,000 sq. ft. manufacturing plant with multi-million dollar investment with latest e
Technical Library | 2021-10-20 18:21:06.0
The solderability of the SAC305 alloy in contact with printed circuit boards (PCB) having different surface finishes was examined using the wetting balance method. The study was performed at a temperature of 260 _C on three types of PCBs covered with (1) hot air solder leveling (HASL LF), (2) electroless nickel immersion gold (ENIG), and (3) organic surface protectant (OSP), organic finish, all on Cu substrates and two types of fluxes (EF2202 and RF800). The results showed that the PCB substrate surface finish has a strong effect on the value of both the wetting time t0 and the contact angle h. The shortest wetting time was noted for the OSP finish (t0 = 0.6 s with EF2202 flux and t0 = 0.98 s with RF800 flux), while the ENIG finish showed the longest wetting time (t0 = 1.36 s with EF2202 flux and t0 = 1.55 s with RF800 flux). The h values calculated from the wetting balance tests were as follows: the lowest h of 45_ was formed on HASL LF (EF2202 flux), the highest h of 63_ was noted on the OSP finish, while on the ENIG finish, it was 58_ (EF2202 flux). After the solderability tests, the interface characterization of cross-sectional samples was performed by means of scanning electron microscopy coupled with energy dispersive spectroscopy.
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We provide cost effective, custom printed circuit boards (PCBs) through an instant online system. We also provide PCB Assemb
Industry Directory | Manufacturer
Caring Circuit specialises in the supply of prototype, small and medium-series PCBs factory in Shenzhen,China.We are a leading provider of custom Single layer,double layer,multilayer rigid PCBs.
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Since 1971, Eagle Electronics Inc. has provided our Customers with the highest quality Printed Circuit Boards at fair and competitive prices.
New Equipment | Assembly Services
• Place of Origin: Guangdong, China (Mainland) • Brand Name: ShanXu • Model Number: PCB RoHS Compliant • Number of Layers: 1-30 layer • Base Material: FR4, High Tg FR4, Halogen Free, SYL, Rogers, Aluminium • Copper Thickness: 1/3oz ~ 6oz • Boar
New Equipment | Assembly Services
• Place of Origin: Guangdong, China (Mainland) • Brand Name: ShanXu • Model Number: PCB RoHS Compliant • Number of Layers: 1-30 layer • Base Material: FR4, High Tg FR4, Halogen Free, SYL, Rogers, Aluminium • Copper Thickness: 1/3oz ~ 6oz • Boar
New Equipment | Assembly Services
• Place of Origin: Guangdong, China (Mainland) • Brand Name: ShanXu • Model Number: FPC RoHS Compliant • Number of Layers: Single-sided, Double-sided, Multi-layers and Flex-Rigid PCB • Base Material: Polyimide(Kapton), Polyester(PET), FR4 • Copp
New Equipment | Assembly Services
• Place of Origin: Guangdong, China (Mainland) • Brand Name: ShanXu • Model Number: PCB RoHS Compliant • Number of Layers: 1-30 layer • Base Material: FR4, High Tg FR4, Halogen Free, SYL, Rogers, Aluminium • Copper Thickness: 1/3oz ~ 6oz • Boar
Double-Sided & Multi-Layer PCB Material: - FR-4 / Hi-Temp FR-4 / FR-5 / G10 / BT / Polyimide - Very Thin PCB: 0.004" 2L ~ 0.030" 8L - Thick Copper: 1/4 oz. ~ 11 oz. Process: - PTH - Blind/Buried/Segmented Via - Sequential Lamination - MicroVia Capa
