4L PCB with 4oz copper on inner & outer layers
Product name: 4L PCB with 4oz copper on inner & outer layers
Board thickness: 2.36mm
Base material: FR4 TG170
Line width/space: 4/4mil
ENIG: 2U”
4oz finished
Quality assurance: 100% AOI Test
Certificates: ISO.9001/CQC/ISO.TS16949/ROHS
Product Application：Consumer/home/network
- Multech
- China
- 10-15days
- 88000sqm/month
Product Description:
A heavy copper PCB is more than just a board with thicker copper foil. It is a professional-grade circuit board purpose-built for high-current conduction and efficient heat dissipation, with core specifications that set it completely apart from standard PCBs.
By industry definition, heavy copper PCBs feature a finished copper thickness of 2oz (70um) or above. In comparison, conventional consumer-grade PCBs typically adopt only 0.5–1oz (17.5–35um) copper thickness for general-purpose applications.
Product Specifications: 4L PCB with 4oz copper on inner & outer layers
Parameter Category | Specification |
|---|---|
Board Thickness | 2.36mm |
PCB Type | High Tg PCB |
Line Width/Space | 4/4mil |
Surface Finish | ENIG (2U'') |
Finished Copper Thickness | 4oz |
Quality Assurance | 100% AOI Test |
Certificates | ISO 9001 / CQC / ISO TS16949 / ROHS |
Applications | Consumer Electronics / Telecom Equipment / Network Devices / Automotive Electronics |
Product Advantages:
Heavy copper PCBs deliver outstanding performance for high-power and high-reliability application scenarios, with tangible advantages in current carrying and thermal management:
Enhanced High-Current Carrying Capacity: As specified in the IPC-2221 standard, a circuit trace’s current carrying capacity rises with its cross-sectional area. Under natural convection conditions, a 2mm-wide trace with 2oz copper can sustain a continuous current of 5A, while the same-sized trace with 10oz copper supports up to 18A. This significant upgrade fully meets the high-current operation requirements of industrial drivers, EV chargers and other high-power equipment.
Effective Temperature Rise Control: Practical testing of charger modules shows clear thermal improvement from heavy copper construction. At a 25°C ambient temperature, upgrading from 1oz to 2oz copper reduces temperature rise from 45K to 28K, well within the 60K industry safety threshold and completely avoiding overheating hazards. It is a proven industry rule that every 10°C drop in operating temperature effectively doubles electronic component service life.
Company Profile:
Founded in 1997, Multech PCB is a leading high-end PCB manufacturer in China with nearly 30 years of experience. Headquartered in Shenzhen and with a 20,000+ m² production base in Huizhou, our company has an annual output exceeding 2 million m², handling prototype to high-volume orders. With a 60+ member R&D team, Multech specializes in multilayer, HDI, backplane, high-frequency, metal core, flexible and rigid-flex PCBs. 80% of our products are exported to Europe, US, Japan, and Asia-Pacific, which services telecommunications, industrial control, medical, automotive, and aerospace industries. At the same time, our company is certified with ISO9001, ISO14001, UL, RoHS, and IATF16949, it also provides one-stop PCB+PCBA solutions to the global customers for quality, cost-effectiveness, and on-time delivery.
Certificates:
ISO 13485
ISO 9001
IATF 16949
ISO 14001
Manufacturing Process:
FAQ:
Q:What files do you use in bare pcb fabrication?
A:Gerber RS-274X,274D,Eagle and AutoCAD's DXF,DWG
Q:What format of Bom List you prefer?
A:We prefer in MS-Excel with Components Part No.,Manufacturer,Quantity,Value info, other format are also accepted.
Q:How can i know the processing about my PCBA order?
A:Each Customer will have a sale to contact with you. Eastwin working hours: AM 9:00-PM 6:00(Beijing Time) from Monday to Friday. we will reply your email in 2 hours during our working time. And you also could contact with our sales by cellphone if urgent.
Q:How long will we get the quotation after providing pcb gerber file,completed bom list,part datasheet and PNP file?
A: The quotation will be sent in less than 2 work days, for some special components, you also could recommend supplier to us.
Q:If all PCBAs will be tested before delivery if we provide the function testing method?
A:Yes, we ensure that each piece of PCBA will be tested before shipment, we ensure the goods we sent with good quality.
Q:What’s your minimum order quantity (MOQ)?
A: Our MOQ is 1 piece. We can support prototype orders, small-scale trials production, as well as medium to large-volume mass production to meet customers' diverse R&D and production needs.
Q: What are the transportation methods used by your company?
A: Air transport, sea transport, rail transport, DHL, FEDEX, UPS, TNT and certain designated freight forwarders for customer's needs.
Q: What is your usual method of payment?
A: We usually use bank transfers and Paypal for receiving payments.
After-sales service:
At Multech, we believe a good PCB is just the beginning of the collaboration. What truly makes our customers choose to work with us for 20 years is our professional techinical team is always to solve them in time when issues occur .
- Quality Assurance: We have 100% AOI testes. Free re-production for any issues.
- Technical Support: You can access to the consulation of our engineering team, include design file review, documentation guidance, design recommendations, and DFM (Design for Manufacturing) advice.
- Rapid Response: We can give you quick feedback within 48 hours for your complaints.
- Long-Term Partnership: We provide professional account management services for high-volume orders.
