Custom Round SMD2835 Aluminum PCB Bare Round LED MCPCB for Downlights & Spotlights
Product Description
Product Description
At R2T, we understand that the foundation of a reliable LED fixture lies in its heat management. Our Custom Round SMD2835 Aluminum PCB (Bare MCPCB) is engineered specifically for lighting manufacturers requiring premium thermal performance and seamless SMT assembly.
Delivered as a high-precision, unpopulated bare board, this round aluminum substrate is designed to serve as the core engine for your commercial downlights, spotlights, and ceiling panels. The precision-engineered SMD2835 pad footprints and the optimized radial circuit layout ensure maximum light output uniformity, while the high-thermal-conductivity aluminum core rapidly extracts heat, significantly extending the lifespan of your finished lamps.
Featuring a robust center mounting hole and high-contrast protective solder mask, this bare board provides the perfect, high-quality canvas for your automated assembly lines.
Why Choose R2T's Bare Aluminum PCBs?
Precision SMT Compatibility: Laser-drilled SMD2835 footprints (2.8mm × 3.5mm) guarantee 100% alignment during automated pick-and-place mounting, eliminating SMT errors.
Superior Thermal Management: High-grade aluminum core with optimized dielectric layers ensures rapid heat transfer from the LED junction to the fixture heatsink, drastically reducing lumen depreciation.
Uniform Light Distribution: The scientifically calculated radial pad arrangement ensures shadow-free, perfectly uniform light dispersion for high-quality commercial lighting.
Robust Mechanical Design: The center metalized through-hole allows for secure screw mounting directly to the lamp housing, enhancing structural stability.
Technical Specifications
Feature | Details |
|---|
Feature | Details |
|---|---|
PCB Type | Single-layer Round Aluminum MCPCB (Bare / Unpopulated) |
LED Footprint | SMD2835 (2.8mm × 3.5mm) |
Layout Design | Radial / Circular arrangement with center thermal hole |
Substrate Material | High-Thermal Conductivity Aluminum Core |
Solder Mask | Black (High anti-oxidation & anti-UV performance) |
Standard Thickness | 1.0mm / 1.2mm / 1.5mm |
Copper Weight | 1oz (Standard) / Customizable to 2oz |
Surface Finish | HASL Lead-Free / Immersion Gold (ENIG) |
Customization & OEM Services
We tailor our PCBs to fit your exact fixture requirements. R2T offers full customization on:
PCB Outer Diameter
LED Pad Count and Spacing
Dielectric Thermal Conductivity (1.0W/m·k, 1.5W/m·k, 2.0W/m·k)
Panelization Layout for SMT Efficiency
Frequently Asked Questions (FAQ)
Q1: Can I order this aluminum PCB bare, without LEDs?
A: Yes. This product is specifically supplied as an unpopulated (bare) board, ready for your own SMT assembly line. We focus on providing high-precision, bare MCPCBs with perfectly dimensioned SMD2835 footprints.
Q2: What is the purpose of the center hole on the PCB?
A: The center hole serves two critical functions. Primarily, it acts as a thermal via and a mounting point. You can use a screw to securely fasten the PCB directly to your lamp's heatsink or housing, which maximizes surface contact and improves overall heat dissipation.
Q3: Do you support panelization for bulk SMT production?
A: Absolutely. To maximize your SMT line efficiency and reduce material waste, we can ship the boards in large, multi-panelized arrays instead of individual round boards. Just provide us with your SMT machine specifications.
Q4: What is the typical lead time for custom bare aluminum PCBs?
A: For standard sizes, we maintain stock ready for immediate shipment. For custom orders with specific thermal requirements, typical sample lead time is 3-5 days, and bulk production takes 7-10 days depending on order volume.