All the print circuit boards received by WELLER will be determined to be purposely baked at below condition before release it to assembly process: A minimum of 4 hours at 125°C and a maximum of 16 hours would meet IPC-1601 standards (Printed Board Handling and Storage Guidelines). Moisture barrier bags in a range of sizes were … Continued
What files do you need for PCB assembly and mold injection? 1. PCB specifications like below: Based material: FR-4? Board thickness: 1.6mm? Copper thickness: 1oz? Solder mask color: Green? Silkscreen color: White? Surface treatment: HASL lead free, immersion gold…? 2. PCB Gerber files (in RS274-X format) 3. BOM list in excel format 4. Mold design … Continued
What wire bond options do you have? Do you have Au and Al bond wire? Do you have ribbon and/or wire bonding? Weller: Al bond wire is popular to us, but Au is rarely used , so we would suggest to Al boding wire.
What is clean PCB assembly process? It is processed with clean-needed solder paste composed by a type of Water Soluble Flux,which can provide excellent soldering performance. But with it’s flux residues left after soldering process is very sensitive and reactive to water so it is easy to corrode PCB board. Hence, it is necessary to … Continued
We do all the PCB assembly work upon the certificate of ISO9001.
Documents Required to Quote or Order a PCB Assembly What do you need to get a quote on a PCB assembly? This is a great question and often a source of confusion. There are four basic documents and exactly how they are transmitted depends on your company’s tools; … Continued
Yes, Weller can provide Prototype PCB Assembly as Quick as 1 Day. Our printed circuit board assembly service is South China’s leading one-stop solution for PCB and assembly under one roof; specializing in small and medium runs with fast lead-times and no minimum quantity requirement.
Yes. Normally all our PCB board material used and PCB manfuactured by lead free process unlesse customer have other options.Anyway,all our PCB assembly process are lead free process which can 100% meet RoHS-compliant
Assembly lead times quoted to the customer exclude the procurement lead time. The lead times for the turnkey PCB assembly order entirely depend on the time required to source the part. The assembly begins only after all the components are available in the inventory. Weller Technology sometimes have special routing to by the some curcial … Continued
Usually customer is interested to ship the components to us from outside of China intead of we purchasing that.But please note that normally China custom will charge extra duty taxes as below approximately: ICs: 13% depending on the unit cost LED, connectors.resistors and capacitors: 30%-50% extra taxesThe long lead time on the custom clearance process. … Continued