How do you calculate LED board assembly cost?

Multiply boards in batch by the per-board assembly cost by the full assembly share percentage to get variable cost, then add the fixed batch setup. For 500 boards at $18 each fully assembled plus $280 setup, that's $9,000 variable plus $280, or $9,280 total.

What is the cost per board in this example?

Total cost divided by board count: $9,280 over 500 boards equals $18.56 per board. The $0.56 premium over the $18 variable rate is the fixed $280 setup spread across the batch.

How does batch size affect LED assembly cost?

Variable cost scales linearly, but the fixed setup is constant, so per-board cost falls as the batch grows. The same $280 setup adds $0.56/board at 500 boards but only $0.056/board at 5,000 — the core argument for larger runs.

What does full assembly share mean?

It's the percentage of boards that go through complete assembly in this run. At 100% all boards are fully built; if only 80% are finished and the rest left as partials, set it to 80 and the variable cost drops proportionally.

Should setup cost be amortized per board or per batch?

Quote it per batch, but report per board for comparison. Amortizing $280 over 500 boards gives a clean $18.56/board that customers can benchmark, while keeping the setup visible protects you on small reorders.

LED board assembly cost vs full luminaire cost — what's the difference?

This calculator covers only the populated board. Full luminaire cost adds the housing, optics, driver, wiring, and final assembly labor — often several times the board cost, so don't quote a fixture from board cost alone.

Lighting, LEDs & Electrical Fixtures calculator

LED Board Assembly Cost Calculator

LED board assembly cost rolls up the true batch cost of populating and finishing LED PCBs, combining variable per-board labor and components with the fixed setup that every run carries. Lighting manufacturers and contract assemblers use it when quoting a luminaire program or deciding batch sizes, because the fixed setup — stencil change, solder paste, AOI program load — is the same whether you build 50 boards or 5,000. Spreading that fixed cost over a larger batch is what drives the per-board number down, and this calculator makes that trade-off explicit. It also lets you model partial completion, where only a share of boards goes through full assembly in this run.

What this calculator does

Estimate the total cost of assembling LED boards for a production batch. Combines board count, per-board assembly cost (components, solder paste, pick-and-place labor), the share of boards requiring full assembly vs. rework, and fixed batch setup costs.
Use this when quoting a production run of LED boards, comparing in-house vs. contract assembly cost, building a fixture BOM, or reviewing where LED board cost sits within total fixture cost.
It computes the total dollar cost of assembling a batch of LED boards, combining variable per-board cost across the completed share with a fixed batch setup charge.

Formula used

Variable assembly cost = boards in batch x assembly cost per board x full assembly share%
Total LED board assembly cost = variable assembly cost + fixed batch setup cost

Inputs explained

LED boards in batch:
Assembly cost per board:
Full assembly share:
Fixed batch setup cost:

How to use the result

Use it when quoting an LED board build, comparing batch sizes, or deciding whether to absorb setup over a single large run.
It uses a single blended per-board cost and one fixed setup figure; scrap, rework loops, and step-change tooling costs at higher volumes are not modeled.

Current U.S. benchmarks

The producer price index for copper and brass mill shapes stands at 559.593 (BLS, May 2026), up 76.8% from a year earlier. Quotes priced off last quarter's material cost miss this move. Global copper trades at $13,484 per tonne (IMF via FRED, May 2026).
Industrial electricity averages 8.66 cents per kWh across the U.S. (EIA, Apr 2026), up 5.5% from a year earlier. Energy-intensive steps carry this directly into unit cost.
The U.S. has 5,397 electrical equipment and appliances establishments employing about 369,437 workers (Census County Business Patterns, 2023).

Common questions

How do you calculate LED board assembly cost? Multiply boards in batch by the per-board assembly cost by the full assembly share percentage to get variable cost, then add the fixed batch setup. For 500 boards at $18 each fully assembled plus $280 setup, that's $9,000 variable plus $280, or $9,280 total.
What is the cost per board in this example? Total cost divided by board count: $9,280 over 500 boards equals $18.56 per board. The $0.56 premium over the $18 variable rate is the fixed $280 setup spread across the batch.
How does batch size affect LED assembly cost? Variable cost scales linearly, but the fixed setup is constant, so per-board cost falls as the batch grows. The same $280 setup adds $0.56/board at 500 boards but only $0.056/board at 5,000 — the core argument for larger runs.
What does full assembly share mean? It's the percentage of boards that go through complete assembly in this run. At 100% all boards are fully built; if only 80% are finished and the rest left as partials, set it to 80 and the variable cost drops proportionally.
Should setup cost be amortized per board or per batch? Quote it per batch, but report per board for comparison. Amortizing $280 over 500 boards gives a clean $18.56/board that customers can benchmark, while keeping the setup visible protects you on small reorders.

Last reviewed 2026-05-12.