3W/MK Conductivity Single Layer PCB Copper Substrate For LED

3 W/MK Conductivity Copper Substrate Single Layer PCB Used In Led

Specifications:

1 All dimensions are in MM.
2 Fabricate per IPC-6012A Class2.
3 Materials:
3.1 Dielectric: Aluminum
3.2 Min Tg: 150DEG
3.3 Copper: As per stack up
3.4 UL Rating: 94V0 Minimum
4 Surface finish: ENIG 1U
5 Solder mask material should meet all requirement of the IPC-SM-840E and shall be green in color and applied over bare copper. Vendor may edit solder mask and paste mask as needed.
6 Editing of existing copper layers shall require customer approval.
7 Silkscreen legend to be applied per layer stackup using white non-conductitive epoxy ink.
8 100% continuity testing using database netlist shall be performed.Vendor to identify test passed in secondary side.
9 Vendor to mark date code and logo in legend secondary side.
10 Bow and twist shall not exceed 1.0% of longest side.
11 Vendor to provide panel drawing for customer approval before production


PCB report have to include the following information:

1 Measurement: outline dimension, pcb thickness, plating thickness, actual hole size dimension, copper thickness, hole wall copper thickness, solder mask thickness, track and space width, warp and twist percentage;

2 Test and inspection: electrical test result, solder ability test result, visual inspection test result, micro section pcb with resin;

3 Other: date code, quantity etc.


FQA:

Q1: What are Copper Based PCBs?
A1: Copper-based PCBs use copper as a primary base material in place of commonly used FR4. The copper base material is then covered with an insulating layer followed by a circuit layer. Copper core/based PCBs are known to have excellent heat dissipation and can be used for high frequency applications with minimal variation in performance over wide temperature ranges. However, these advantages do come at a cost (literally), Cu Core PCB’s are vey expensive.

Advantages of Cu Based PCBs:

• Their heat conduction is way better than the other substrates like Aluminum and Iron
• Suitable for high-frequency operation with high and low temperature variations
• The copper core PCBs have higher thermal conductivity, which improves the heat transfer efficiency followed by better heat dissipation performance.

Limitations of Cu Based PCBs:

• They are expensive and heavy in weight

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