sales5_at_etlimited_cn PCB assembly service, PCB assemblies,PCBA Contract, Printed circuit boards assembly. China 8 layers PCB&PCBA supplier and exporter,8 layers PCBA with SMT,BGA and electronical components. This PCBA's key s
sales5_at_etlimited_cn Halogen free PCB,PCB boards, PCB prototype, pcb solder mask,FREE PCB Key speciafications/special features: 8 layers PCB Base material: Ceramics, Aluminum, Rogers, high Tg, F4B, F4B
sales5_etlimited_cn china ceramic pcb,china ceramic pcb single layer key speciafications/special features: Base material: Ceramics, Aluminum, Rogers, high Tg, F4B, F4BK, F4BT, TP, PF, FR4, FR1, FR2, CEM-1, CEM-3, etc. pcb Board thickness: 0.30 to
sales5_etlimited_cn china ceramic pcb,china ceramic pcb single layer key speciafications/special features: Base material: Ceramics, Aluminum, Rogers, high Tg, F4B, F4BK, F4BT, TP, PF, FR4, FR1, FR2, CEM-1, CEM-3, etc. pcb Board thickness: 0.30 to
sales+etlimited+cn china pcba supplier,china card read pcba supplier,china 8 layers pcba(pcb assembly) supplier key speciafications/special features: 8 layers PCB Base material: Ceramics, Aluminum, Rogers, high Tg, F4B, F4BK, F4BT, TP, PF, FR4, FR1,
sales5_etlimited_cn Aluminium PCB,single sided PCB,China PCB&PCBA manufacturer key speciafications/special features: 8 layers PCB Base material: Ceramics, Aluminum, Rogers, high Tg, F4B, F4BK, F4BT, TP, PF, FR4, FR1, FR2, CEM-1, CEM-3, etc. Board th
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.
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.
High Tech, Quick Turn, Manufacturer of PCB's up to 44 layer count. Specializing in Prototype and R&D. Mil-Spec 31032 & 55110 Certified. Located in Fremont, CA & Amesbury, MA.
Consisting of multiple laminates and differing dielectric constants, this multilayer (displayed right) is a mixed-dielectric printed circuit board which was manufactured for the Aerospace Industry. Multilayer Mixed Dielectric PCB Specifications:
