Double Sided Plated Through Boards

Showroom Guide

Showroom: Double-Sided Plated Through Boards – A Buyer’s Guide

This guide focuses on sourcing double-sided plated-through (DS PTH) boards via the showroom (https://www.alibaba.com/showroom/double-sided-plated-through-boards.html). DS PTH boards are fundamental for prototyping and small-batch production; careful selection is crucial.

Key Considerations:

Material: FR-4 is standard. Verify grade (e.g., FR-4 TG170 for higher temperature resistance) if your application demands it. Request data sheets.
Copper Weight: Expressed in ounces (oz). Higher copper weight (1oz, 2oz) supports higher current carrying capacity and improved thermal performance. Match to your circuit requirements.
Board Thickness: Common thicknesses are 1.6mm, 1.2mm, and 0.8mm. Select based on mechanical requirements and component density.
Hole Size & Plating: Minimum hole diameter and plating thickness (typically copper) directly impact reliability. Confirm tolerances. Smaller holes require tighter manufacturing control.
Solder Mask & Silkscreen: Essential for assembly and identification. Specify colour (green is standard, but others are available) and clarity requirements.

Impedance Control: If your design requires controlled impedance traces (e.g., for high-speed signals), explicitly* state this requirement and request impedance testing reports.

Panelization: How boards are arranged on a larger panel for manufacturing. Discuss panelization options with the supplier to optimize cost and yield.

Safety & Verification:

Supplier Verification: Prioritize “Verified Supplier” status. Examine transaction history, business license details, and on-site verification reports.

Trade Assurance: Always* use Trade Assurance. This provides payment protection and ensures quality standards are met.

Sample Ordering: Mandatory*. Order samples from multiple suppliers before committing to a large order. Thoroughly test samples for functionality and dimensional accuracy.

Communication: Clear, detailed communication is vital. Use the messaging system to document all specifications and agreements. Confirm understanding of technical requirements.
Certifications: Look for suppliers with relevant certifications (e.g., ISO 9001). While not a guarantee, they indicate a commitment to quality management.
Review Ratings & Feedback: Scrutinize supplier ratings and read detailed feedback from other buyers. Pay attention to comments regarding quality, delivery time, and communication.

Productivity Tips:

Detailed Gerber Files: Provide complete and accurate Gerber files, including drill files, solder mask, and silkscreen layers.
Bill of Materials (BOM): While not always required for bare boards, a BOM can help clarify component requirements if you’re also sourcing components.

DFM (Design for Manufacturing) Check: Ask the supplier to perform a DFM check on your design to identify potential manufacturing issues before* production.