Lumina Blog

Technical notes on aluminum PCB and LED production

Manufacturing insights, process notes, and sourcing notes for LED lighting buyers and engineers.

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37 articles found

Single Layer Aluminum PCB Stackup: The Standard Layer Breakdown & LED Design Rules

Understand the single layer aluminum PCB stackup: circuit copper, ceramic dielectric, and base alloy. Compare 75 vs 100 µm limits and DFM rules.

Updated Sep 3, 2026

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Tech Sharing

Updated Sep 1, 2026

BOM Sourcing for LED PCB Assembly: Who Buys the Parts

BOM sourcing for LED PCB assembly: who buys each line, how to lock the LED spec, and what to send with the RFQ besides the BOM.

Tech Sharing

Updated Aug 26, 2026

FR4 Price Increase in 2026: What Actually Went Up

FR4 glass cloth rose through August 2026. Thin 2116 and 1080 moved first. Standard 7628 followed. Reported China quotes, not a finished-board formula.

Tech Sharing

Updated Aug 21, 2026

Automatic X-Ray Inspection (AXI): When LED Boards Actually Need It

Automatic X-ray inspection (AXI) checks hidden solder cameras miss. Most single-sided LED boards do not need 100% X-ray. Name thermal pads and QFNs in the RFQ.

Tech Sharing

Updated Aug 18, 2026

Copper PCB vs Aluminum PCB: Which Metal Core Fits LED Lighting?

For most LED lighting, aluminum PCB is the practical metal core. Copper conducts heat better, but weight, cost, and the dielectric usually decide the board.

Tech Sharing

Updated Sep 7, 2026

BOM List for PCB Assembly: 7 Core Columns & Free Excel Template

Download our practical LED PCB assembly BOM template (.xlsx). Learn the 7 must-have columns, DNP rules, and how to prevent costly SMT quoting delays.

Tech Sharing

Updated Aug 26, 2026

LED PCB Soldering Defects: How to Find the Cause and Prevent Repeat Failures

A dark LED does not tell you the cause. Classify the soldering defect first—bridge, cold joint, tombstone, void, or reversed part—then stop it repeating.

Tech Sharing

Updated Sep 7, 2026

How to Choose SMT Solder Paste for LED Aluminum PCB Assembly

Select the right SAC305 or low-temp solder paste for LED aluminum boards. Practical stencil guidelines, flux chemistry, and profiling to prevent SMT voids.

Tech Sharing

Updated Aug 26, 2026

Reflow Soldering Aluminum PCBs: Process Controls for LED Assembly

Do not copy the FR4 oven recipe onto an aluminum PCB. Check paste guidance, LED limits, and a real-board profile before first article.

Tech Sharing

Updated Sep 21, 2026

ENIG on Aluminum PCB: When LED Projects Actually Need It

When to choose ENIG on aluminum PCB for LED lighting: pad planarity, 12-month shelf life, and cost comparison vs OSP and HASL. Direct factory advice.

Tech Sharing

Updated Sep 7, 2026

How to Choose Surface Finish for LED Aluminum PCBs

Surface finish selection for LED aluminum PCBs: when to specify HASL, OSP, or ENIG—and when ENIG is over-spec for high-volume lighting production.

Tech Sharing

Updated Jul 13, 2026

How LED Aluminum PCB Heat Dissipation Really Works

LED aluminum PCB heat dissipation is a full thermal path—not just ‘aluminum is cool.’ See dielectric, TIM/mounting, and practical mass-production choices.

Tech Sharing

Updated Jul 11, 2026

How to Choose Aluminum PCB Copper Thickness for LED Lighting

Aluminum PCB copper thickness is usually marked in oz or μm. See when ~12 μm is common on LED boards, how 1 oz fits datasheets, and what to put on the RFQ.

Tech Sharing

Updated Aug 26, 2026

PCB Prototyping: How to Optimize Tooling Fees When Scaling to Volume Orders

PCB prototyping is more than a lab sample that lights up. Lock outline, avoid later tooling traps, and ask whether setup fees credit into volume.

Tech Sharing

Updated Aug 26, 2026

Copper Clad Laminate (CCL) for LED PCBs: Sourcing, Specifications and Cost Control

Two aluminum PCB quotes are hard to compare until the copper clad laminate is named. Thickness, copper, and thermal grade. Not just aluminum board.

Tech Sharing

Updated Sep 7, 2026

LED PCB Assembly Quote: Checklist, Pricing Factors & Fast RFQ Guide

Get an accurate LED PCB assembly quote fast. Complete RFQ checklist covering Gerbers, BOM format, stencil/setup costs, and essential factory testing notes.

Tech Sharing

Updated Aug 26, 2026

SMT Line: A B2B Guide to LED Aluminum PCB Assembly

See which SMT line steps change an LED aluminum quote. And which files make the first quote usable on metal-core boards.

Tech Sharing

Updated Aug 26, 2026

PCB Class (IPC Class): Class 2 vs Class 3 for LED Aluminum PCBs

For most commercial LED aluminum boards, PCB Class 2 is enough. Class 3 adds inspection and cost. Save it for when the product actually needs that control.

Tech Sharing

Updated Aug 26, 2026

PCB Files for Manufacturing: What to Send and What to Check

A single .pcb or PDF is not enough to quote. Send Gerber, drill, and—if you need SMT—BOM and pick-and-place so the job can start.

Tech Sharing

Updated Aug 26, 2026

PCB Material Selection for LED Buyers: FR-4, Aluminum PCB, or Ceramic?

For LED boards, pick the substrate by the real limit. Aluminum when heat matters. FR-4 when it does not. Ceramic only if aluminum cannot meet it.

Tech Sharing

Updated Aug 26, 2026

Ceramic PCB vs Aluminum PCB: When to Use Each One

Ceramic PCB is not the default LED board. Use it when heat, CTE, or insulation actually needs it. Aluminum MCPCB is still the practical first option.

Tech Sharing

Updated Aug 26, 2026

Single Layer PCB Board: Specs to Confirm for LED Aluminum PCBs

A single layer PCB on aluminum is one copper circuit. Confirm stackup, copper, dielectric, and finish before you quote. The name is not the spec.

Tech Sharing

Updated Aug 26, 2026

What Is AOI? How Automated Optical Inspection Works in PCB Manufacturing

AOI will not catch solder under a thermal pad. On LED aluminum boards it is a camera check for opens, shorts, and missing parts.

Tech Sharing

Updated Aug 26, 2026

How Much Does an Aluminum PCB Cost? A Practical Breakdown for LED Buyers

Aluminum PCB cost for LED boards is not a catalog number. Size, panel use, finish, and quantity decide it. Here is what belongs on the RFQ.

Tech Sharing

Updated Sep 8, 2026

PCB Silkscreen Markings & Design Rules: LED Polarity, Clearances & Solder Mask

Master PCB silkscreen design rules, DFM clearances, and SMD LED polarity marking standards. Learn why polarity marks belong outside component outlines and avoid costly SMT errors.

Tech Sharing

Updated Aug 26, 2026

Aluminum PCB Manufacturing Process: 7 Steps You Need to Know

Two aluminum PCB quotes for the same outline can still diverge. Dielectric, copper, and surface finish are the steps to lock before you sample.

Tech Sharing

Updated Aug 26, 2026

LPI vs Screen Printing Solder Mask: A Practical Buying Guide

Most LED aluminum boards do not need LPI solder mask. Screen printing is enough when pad spacing is normal. Use LPI for fine dams or tight registration.

Tech Sharing

Updated Jul 26, 2026

LED Aluminum PCB Trace Width: Current Table for 0.5oz, 1oz, and 2oz

Use this LED aluminum PCB trace width table to compare 0.5oz, 1oz, and 2oz copper current capacity, temperature rise, and practical production margin.

Tech Sharing

Updated Sep 8, 2026

LED PCB vs Aluminum PCB: Is There a Difference? (Buyer's Guide)

Confused by LED PCB vs aluminum PCB? Learn why 'LED PCB' isn't a material, compare FR4 vs IMS thermal limits (0.6–2.0 W/m·K), and avoid costly RFQ errors.

Tech Sharing

Updated Jul 26, 2026

OSP Shelf Life on LED Aluminum PCB: How Long Before Assembly?

OSP on aluminum LED PCBs typically lasts about 3–6 months in proper storage. See practical handling tips before SMT assembly.

Tech Sharing

Updated Sep 7, 2026

OSP vs HASL for LED Aluminum PCB: Which Is Better?

For LED aluminum boards, OSP delivers superior pad coplanarity for fine-pitch SMT, while HASL provides longer storage life. Compare yields and solderability.

Tech Sharing

Updated Aug 26, 2026

LED PCB Dielectric Thickness: 3 Steps to Choose

Do not pick the thinnest aluminum PCB dielectric just to cool the LEDs. Voltage first, heat second, cost third. 75 to 100 um is the usual LED range.

Tech Sharing

Updated Aug 26, 2026

Aluminum PCB Dielectric Material: How to Choose

Do not choose aluminum PCB dielectric by W/mK alone. The layer—not a thicker plate—usually limits LED heat. Start with voltage, path, and cost.

Tech Sharing

Updated Aug 26, 2026

Prepreg vs Adhesive Dielectric: 4 Selection Factors

Prepreg dielectric fits most standard LED aluminum boards. Adhesive is the usual step-up when thermal resistance has to come down.

Tech Sharing

Updated Aug 26, 2026

LED Aluminum PCB Thickness: 4 Factors to Check

A thicker aluminum PCB will not automatically cool the LEDs. For most lighting boards, 0.8-1.6 mm is enough. Check size, mounting, and the thermal path.

Tech Sharing

Updated Sep 21, 2026

Aluminum PCB vs FR4: Cost, Thermal & When to Switch

Compare Aluminum PCB vs FR4 for LED boards: thermal conductivity (0.6–1.0 W/m·K vs 0.3), cost impact, and when to switch. Factory direct quote in 1-3 days.

Tech Sharing

Updated Aug 26, 2026

Aluminum PCB Board Guide for LED and Power Applications

An aluminum PCB is copper, dielectric, and a metal base. For LED work, lock that stack—and the cost drivers—before you sample.

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