Box-Build & Electro-Mechanical Integration
The full assembly between a pile of components and a product your customer can power on: PCBA, display, power, and cabling integrated into the enclosure, your firmware loaded, every unit functionally tested — built in Taiwan, managed in plain English.
What a box build includes here.
Concretely — the work between receiving components and shipping a finished unit.
Sub-assembly prep
Boards, displays, and harnesses staged and inspected before integration begins.
Mechanical integration
PCBA, display, power, and harness mounted into the enclosure with controlled-torque fastening.
ESD-safe handling
Electronic assembly under ESD-safe procedures, to IPC-A-610 Class 2 acceptability.
Firmware loading
Your firmware, loaded as a production step. The code stays yours.
Labeling & packaging
Serial and compliance labeling, packaged under your brand.
Final QC & test
Every unit against the written Go/No-Go checklist; OQC report ships with the goods.
High-mix, low-to-medium volume.
The programs we run best are the ones the giant EMS players won't prioritize and the ones too complex to coordinate across five separate vendors yourself: industrial IoT and edge devices, kiosk and charging hardware, rugged display systems, instrumentation and control boxes. Runs are quoted against your BOM and build complexity — send the data package and you'll get a straight answer on fit.
Consigned, turnkey, or in between
Under a turnkey model, we source every component on the BOM through our supplier network — you buy finished, tested units at one price. Under a consigned model, you supply some or all components — long-lead ICs you already own, custom parts from an existing vendor — and we build with them.
Most real programs land in between. The quote itemizes the split line-by-line, so you always know which parts we're sourcing, which are yours, and who carries the inventory risk on each.
Where the electronics meet the metal.
Electromechanical assembly is the part of a build where electronic components and mechanical hardware become one unit: a populated board fastened into a chassis, a display aligned behind a bezel, a harness routed and strain-relieved, connectors mated, fasteners torqued to spec. It is the step that decides whether a product rattles, shorts, or survives shipping — and it is the step most board-level shops hand back to the customer.
Essen manages electromechanical assembly as a normal part of a box build, not as an exception: mechanical fit is reviewed at DFM, tolerance stacks are checked before tooling is cut, and the assembly sequence is documented so the tenth unit is built the same way as the first. Work is performed under ESD-safe procedures to IPC-A-610 Class 2 acceptability.
If you need electromechanical assembly on its own — your boards, our integration — that is quotable too. Send the mechanical drawing and the assembly requirements with your RFQ.
Send the data package. Get a DFM review back.
Gerbers or ODB++, BOM, STEP files for the enclosure, and your test requirements — written manufacturability feedback comes back before you commit to anything.
Frequently asked
What does your box-build service include?
Sub-assembly preparation, mechanical integration of the PCBA, display, power supply, and wire harness into the enclosure, controlled-torque fastening, ESD-safe handling, loading your firmware, labeling, and final QC against the test criteria agreed with you in writing. Units ship ready to power on.
What volumes are you set up for?
High-mix, low-to-medium volume programs — the runs that are too small for the giant EMS players to care about and too complex to manage across five separate vendors yourself. Exact volume fit is confirmed at quote against your BOM and build complexity.
Consigned or turnkey?
Both. Under a turnkey model we source every component on the BOM through our supplier network and you buy finished units. Under a consigned model you supply some or all components — long-lead ICs you already own, for example — and we build with them. Most programs land in between, and the split is itemized line-by-line in the quote.
Who owns the firmware?
You do, always. We load your firmware as a production step and functionally test against it; the code and its IP never stop being yours.