Laser marking of electronics adds permanent part numbers, serial numbers, date codes and Data Matrix codes to electronic components. Factories use it to trace every chip, connector and housing through production and repair.
HeatSign makes fiber, UV and MOPA laser marking machines. We check each material in your product and tell you if one machine is enough.
Four machines cover most electronic parts. Pick by material: fiber for metal, UV for chips and light plastic, MOPA for anodized housings. The price depends on laser power and options.
IC laser marking machine
Best for: thin IC chips, white plastic, glass and circuit boards
Not for: deep marks on metal
Best for: black logos on aluminum housings, white marks on dark plastic, metal
Not for: tiny codes on white plastic
Best for: cables, boxes and parts on a conveyor. The line does not stop.
Not for: single parts on a bench
Electronics marking covers the whole product, from the chip inside to the case outside. Find your part below to see which laser to use.
Black epoxy, ceramic
Fiber or UV, test first
Watch codes and logos go onto electronic parts, from start to finished mark.
Choose by three things: what the part is made of, what you need to mark, and how parts reach the machine. Find your part in the table to see the best match.
Your part | Material | Typical mark | Best machine | Price |
|---|---|---|---|---|
Connectors and terminals | Brass, copper, plated metal | Part number, logo | $2,000–3,500 | |
Rating plates and shields | Stainless steel, aluminum | Specs, serial number, 2D code | $2,000–3,500 | |
Aluminum housings | Anodized aluminum | Black logo, serial number | $5,300–6,800 | |
Dark plastic cases | Black ABS, PC, nylon | White logo, ratings | 100W MOPA or 20W fiber | $2,000–6,800 |
White plastic cases | White or grey ABS, PC | Logo, safety text | $3,000–5,900 | |
IC chips | Epoxy, ceramic | Part number, date code, small 2D code | 20W fiber or UV Test first | $2,000–5,900 |
Glass and ceramic parts | Glass, ceramic | Logo, code | $3,000–5,900 | |
Circuit boards | Solder mask | Serial number, 2D code | $3,000–5,900 | |
Cables and parts on a conveyor | Plastic insulation, mixed | Numbers and codes while moving | On request |
One product, two materials? White plastic case with metal parts: UV + 20W fiber, $5,000–9,400. Aluminum case with metal parts: one 100W MOPA marks both.
Copper parts? Copper reflects about 95% of fiber laser light. Always test copper first.
These four problems come up most in laser marking in electronics manufacturing. Each one has a simple fix.
A small chip or connector leaves only a few millimeters. Normal text and large codes do not fit, so the part leaves the line with no ID.
Test your smallest part first. If space is tight, we suggest a UV laser and a Data Matrix code. It still reads when part of it is damaged.
Black plastic, anodized aluminum and shiny metal often give a grey mark. People can read it, but the code reader on the line cannot.
Match the laser to the surface. For anodized housings we use a MOPA laser. It changes its pulse length to make a dark, clear mark.
Thin plastic walls and parts near chips can melt, bubble or turn yellow. The part then fails the visual check, even if the code reads.
Use a UV laser for heat-sensitive parts. Its shorter wavelength changes the surface with less heat. We test your part before you buy.
Every part needs its own number, and one shift can mark thousands. One wrong digit breaks the link between the part and its records.
The software counts serial numbers by itself and can read them from a file. The operator picks a job instead of typing.
Large brands are strong at local service and full production lines. Low-cost online sellers are cheap but give little help. HeatSign sits in between: clear prices, a free test mark, and honest advice on the smallest machine set.
What matters to you | HeatSign Recommended | Large brands | Low-cost online sellers |
|---|---|---|---|
Price shown before you ask | Yes, on most machines | Usually quote only | Yes |
Test mark on your own part | Free, you pay shipping | Often, through a test lab | Rarely |
Laser types to choose from | Fiber, UV, MOPA, flying | Wide range | Often one type |
Advice on how many machines | We say when one is enough | Often a full system | Little or none |
Machines built for factory use | Yes | Yes | Often hobby grade |
Service technician at your site | No, remote help from engineers | Yes, in many countries | No |
Fully automatic production lines | Flying laser for conveyors | Yes, full line design | No |
Best for | Small and mid-size factories | Large automated plants | Hobby and light use |
Most machines on this page show a price range. You can plan a budget before you talk to anyone.
We mark your real part and send photos and settings. You decide after you see the result.
If one machine can mark your whole product, we tell you. You do not pay for a second one.
Short answers on marking content, standards, mark depth, soldering, fake parts, code checks and safety.
Most components carry a maker logo or code, a part number, a date code and a lot code. The date code is usually four digits in YYWW form: year, then week. Many factories also add a 2D code for tracking.
IPC-1782A. It sets four levels of traceability for materials and four for processes. At the basic level, boards are tracked by work order, not one by one. Higher levels add unit-by-unit tracking, which needs a unique code on each board or part.
Only as deep as the package allows. Many standard packages accept marks 30 to 50 micrometers deep. Thin packages need 10 micrometers or less. In very thin packages, laser light can reach the chip through the filler, so test on real parts first.
A laser mark is part of the surface, so it does not melt or smear like ink. Lead-free reflow can heat the package to 260 °C. Test the mark through your real reflow profile, then scan it again after washing and coating.
It makes faking harder. A laser mark is part of the surface, so solvent will not remove it. Counterfeiters must sand the top and recoat it, called blacktopping, and inspectors check for this. A unique 2D code on each part adds another check.
A test scan only proves the code works on that one reader. A code verifier gives the mark a quality grade. For codes marked directly on parts, verifiers follow ISO/IEC 29158. Your customer or drawing sets the lowest grade you must reach.
Yes. Marking plastic housings and coated parts makes smoke and fine dust. Some plastics, such as PVC, release hydrogen chloride gas. An extractor with a nozzle near the mark protects operators and keeps dust off the lens, so marks stay sharp.
