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PCB Assembly

Express Prototype PCB Assembly

One to fifty boards, built on the production SMT and DIP lines — the same placement programs, inspection and X-ray checks the volume order will run.

SMT production line used for prototype PCB assembly runs at Hitech Circuits in Shenzhen

Certified to

  • ISO 9001:2015
  • IATF 16949:2016
  • UL No. E354070
  • IPC-6012B & IPC-A-600H

Why prototypes run on the production lines

An express prototype is not a hand-built sample. The same four SMT lines and three DIP lines that carry volume production build the first fifty boards — the same placement programs, the same AOI recipes and the same X-ray checks — so the board the design team tests is the board the production order will produce.

That matters most on dense designs. Prototypes down to 01005 and 0201 packages at 4 mil (0.1 mm) pitch are placed here rather than at a hand-assembly bench, and BGA and micro-BGA parts, the hardest to rework without damage, are assembled on the same equipment the volume build uses.

What keeps the turnaround short

  • PCB fabrication and assembly on one site — the bare board does not wait for a courier between the fabrication floor and the assembly floor.
  • Stencils cut in-house — laser-cut and delivered within four hours.
  • Components bought against the whole BOM — including the parts where a prototype quantity would normally attract minimum-order charges.
  • DFM and DFT review before the first article — missing footprints, clearance problems and unreachable test points are found on paper, not on the line.
  • First-article inspection — every feeder, nozzle and vision setting signed off before the lot runs.

Prototype lots come back in 1–3 days, with urgent work fitted in inside 24 hours where capacity allows, and assembly quotations issued within 24 hours — 12 hours for urgent projects.

What the prototype order covers

PCB fabrication, components sourcing, surface-mount and through-hole assembly, SPI and AOI, X-ray for BGA and QFN joints, in-circuit or flying probe test and functional test against the customer's procedure, then packing. A turnkey order needs the Gerber set and the BOM; in a consignment order the components are supplied by the customer and everything else is handled here.

Where the design is still moving, the same lot can be re-run after each revision: the placement program is already in place, so only the changed parts need a new stencil and a new first article.

What to send with the enquiry

The Gerber set, the BOM with manufacturer part numbers, the pick-and-place file, the quantity, any test program and the required lead time. Process limits used for the quotation are on the capability page, and the issued certificates on the certifications page.

Technical Specifications

Prototype volume
1–50 pieces per prototype order · MOQ 1 pc
Assembly capacity
Four SMT lines at 6 million chips per day · three DIP lines at 1.6 million pieces per day
Package range
Down to 01005 and 0201 · 4 mil (0.1 mm) pitch
Placement
Single- or double-sided · mixed SMT and through-hole
Stencils
Cut and delivered within four hours
Lead time
Prototype 1–3 days · urgent lots inside 24 hours where capacity allows
Quotation
Assembly price within 24 hours · 12 hours for urgent projects
Engineering review
DFM and DFT review before the first article
Test
SPI, AOI, X-ray, in-circuit (ICT), flying probe and functional test
Rework
BGA rework and re-balling verified by X-ray
Data required
Gerber set, BOM, pick-and-place file, quantity, test program and lead time
Compliance
ISO 9001:2015 · IATF 16949:2016 · ISO 13485:2016 · UL E354070 · RoHS

Frequently Asked Questions

  • How fast can a prototype PCB assembly order be built?

    Prototype lots are assembled in 1–3 days, and urgent work is fitted in inside 24 hours where capacity allows. Stencils are laser-cut on site and delivered within four hours, so the first article does not wait on tooling, and a complete data package is quoted within 24 hours — 12 hours for urgent projects.

  • How many boards does an express prototype order cover?

    One to fifty pieces. The lot runs on the same four SMT lines and three DIP lines as volume production — six million chips and 1.6 million through-hole placements per day — so the placement programs, AOI recipes and X-ray settings validated on the prototype carry straight over to the production order.

  • Which packages can be placed on a prototype order?

    Down to 01005 and 0201 chip packages at 4 mil (0.1 mm) pitch, on one or both sides of the board, with BGA and micro-BGA placement and re-balling verified by X-ray. Mixed-technology boards that combine surface-mount and through-hole parts are routine at prototype quantity.

  • What data is needed for a prototype assembly quotation?

    The Gerber set, the BOM with manufacturer part numbers, the pick-and-place file, the quantity, any test program, the required lead time and the shipping address. DFM and DFT review runs on that package before the first article, so open pads, clearance problems and inaccessible test points are raised on paper.

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