Last updated: September 30, 2026
A quote-ready PCB fabrication package normally includes the fabrication data, NC drill data, board outline, fabrication drawing or controlled readme, stack-up and material requirements, copper and finished-thickness requirements, impedance information, surface finish, solder mask and legend requirements, routing or scoring details, panelization rules, electrical-test scope, quantity, revision, delivery country and required date. Gerber data alone may describe the artwork, but it does not automatically answer every commercial, material, tolerance or acceptance question needed for a comparable quote.
This checklist is for bare-board fabrication. If the supplier will also source components or assemble the board, add the BOM, CPL/centroid file, assembly drawings and test instructions through the turnkey PCBA quote path.
Upload the Gerber package for PCB fabrication review. State the revision, quantities, target date and delivery country so the response can separate quote-ready requirements from open engineering questions.
PCB fabrication quote checklist at a glance
| Quote section | Information to provide | Why it changes the quote |
|---|---|---|
| Controlled file set | Gerber X2 or RS-274X, accepted intelligent format if used, NC drill, profile, fabrication drawing/readme and file revision | Prevents layers, units, drill data or obsolete revisions from being interpreted separately |
| Board construction | Board type, layer count, finished thickness, stack-up, laminate family or required material designation and copper weight by layer | Defines the manufacturing route, material basis and impedance assumptions |
| Features and tolerances | Minimum trace/space, finished-hole requirements, via types, slots, cutouts, edge features and controlled tolerances | Identifies processes that require capability review instead of a generic price |
| Finish and markings | Surface finish, solder mask color/type, legend, edge contacts, beveling, selective plating and required board marks | Affects process steps, material and acceptance criteria |
| Impedance and test | Target impedance, tolerance, reference layers, coupon requirement, netlist and electrical-test or inspection scope | Aligns stack-up review and the evidence expected with the shipment |
| Panel and delivery | Individual board or array, panel drawing if controlled, breakaway method, quantity breaks, required date, destination and partial-shipment policy | Makes tooling, yield, packing and logistics assumptions comparable |
1. Put the fabrication files under one revision
Send one controlled package instead of emailing layers and drawings in separate messages. Use a clear revision identifier in the folder or archive name, and remove obsolete exports before release. The package may contain:
- PCB image data: Gerber X2 or RS-274X, or IPC-2581/ODB++ only when the receiving fabricator confirms that format is accepted.
- Drill and route data: NC drill files, plated/non-plated hole identification when not unambiguous, slot and routing data.
- Board profile: a single authoritative outline, including internal cutouts and any dimensional drawing needed to interpret it.
- Fabrication drawing or readme: revision, units, board construction, finish, tolerances, markings, test and special-process notes.
- Netlist: an IPC-D-356 or other accepted netlist when electrical test will be derived independently of the image data.
- Panel drawing: only when the customer controls panel size, rails, fiducials, tooling holes, coupons, tabs or scoring.
Ucamco maintains the official Gerber specification and explains that Gerber represents PCB fabrication data. X2 attributes add machine-readable information about file and object function. That improves data clarity, but the buyer still needs to state commercial requirements and any fabrication conditions that are not fully encoded in the files.
2. Define board construction without guessing
| Construction field | What the RFQ should state | When to request supplier input |
|---|---|---|
| Board type | Rigid, flex, rigid-flex, HDI, metal-core, heavy-copper, RF/high-frequency or another defined construction | When the file set does not make the intended construction clear |
| Layer count and order | Copper layer count and order, including named signal and plane layers where needed | When the exported layer naming is ambiguous |
| Finished thickness | Nominal finished board thickness and the required tolerance if project-specific | When the supplier should propose a standard construction around the target |
| Material | Required laminate designation or performance requirements such as Tg, Td, Dk/Df, CTI or halogen-free status only when the design or compliance basis requires them | When approved equivalents are allowed; require the proposed manufacturer and grade to be named |
| Copper | Starting or finished copper requirement for each layer, clearly identified | When plating and finished external copper need clarification |
| Stack-up | Controlled stack-up if fixed, or impedance/material constraints if the fabricator may propose one | Ask for the proposed stack-up to be approved before production when it is supplier-designed |
Do not write only “FR-4” when the application needs a specific thermal, electrical, flammability or certification basis. Conversely, do not force a named laminate when an approved-equivalent policy is acceptable. The RFQ should make that choice explicit.
3. Call out the features that control capability
A supplier cannot safely infer every fabrication limit from a screenshot. The drawing or readme should identify project-specific requirements such as:
- Minimum designed trace width and spacing, including any neck-down areas.
- Smallest finished plated and non-plated holes, slot dimensions and tolerance.
- Blind, buried, stacked, staggered, laser-drilled or filled/capped via structures.
- Via-in-pad, planarization and plating requirements.
- Edge plating, castellations, card-edge contacts, bevels, countersinks or counterbores.
- Controlled-depth routing, back drilling or other depth-sensitive processes.
- Board dimensions and any tighter-than-standard profile, hole or registration tolerances.
Ask the fabricator to list exceptions against the released revision. A useful DFM response states the affected feature, its location, the proposed change and whether buyer approval is required. It should not silently edit artwork, widen a clearance or change a finished hole without a controlled approval path.
4. Give impedance requirements enough context
For controlled-impedance boards, include the target value and tolerance, single-ended or differential designation, the relevant layer or net class, reference plane, trace geometry if fixed, and whether the fabricator may adjust geometry within an approved stack-up. State whether an impedance coupon and TDR report are required.
The quote should distinguish design intent from production control. If the fabricator proposes the stack-up, require the proposed materials, dielectric thicknesses, copper basis and adjusted geometry to be returned for review before release.
For additional background, see the PCB stack-up and impedance-control guide.
5. Select surface finish by application, not habit
No single finish is universally best. The correct choice depends on assembly process, pitch and planarity, number of thermal cycles, storage expectations, contact function, wire bonding, corrosion environment, regulatory constraints and the qualification basis of the finished product.
| Finish decision | What to state in the RFQ | What not to assume |
|---|---|---|
| Solderable surface | Named finish and any project-specific thickness, shelf/storage or handling requirement | That a supplier's default finish is suitable for every pad geometry or assembly process |
| Edge contacts | Contact area, plating system, required selective plating, bevel and masking boundary | That ordinary solderable finish and hard contact plating are interchangeable |
| Wire-bond or special process | Bonding process, compatible finish and acceptance evidence required | That a visually similar gold finish has the same function |
| Compliance | Any RoHS, halogen-free, UL-recognized construction or customer-specific documentation requirement | That a material trade name alone proves the finished board meets the end-product requirement |
6. Specify mask, legend, markings and mechanical details
- Solder mask color and type, plus any defined clearance, tenting, plugged-via or dam requirements.
- Legend color, side and whether clipped or unreadable reference text is acceptable.
- Required date code, lot code, revision, supplier identifier, UL mark or customer marking, including the permitted location and format.
- Peelable mask, carbon ink, conductive ink or other special coatings only when applicable.
- V-score, tab routing, mouse bites, breakaway rails, fiducials and tooling holes.
- Warp/twist, cleanliness, edge condition and packaging requirements when they are controlled by the project.
7. Define electrical test and inspection evidence
“100% test” is incomplete unless the method and acceptance basis are clear. State whether the quote should include fixture or flying-probe electrical test, continuity/isolation criteria, netlist source, impedance coupon/TDR, microsection, dimensional report, solderability or other project-specific evidence. Ask what report or shipment record will be supplied.
IPC-6012F is a qualification and performance specification for rigid printed boards and identifies board types and performance classes through its published scope and table of contents. If an IPC class or another acceptance standard is required, name the exact standard, revision, class and any customer-specific addendum. Do not use “IPC compliant” as a substitute for a controlled acceptance requirement.
8. Add quantities and commercial conditions
To make quotes comparable, send the same commercial basis to each supplier:
- Prototype, pilot and production quantity breaks.
- Individual-board quantity versus array/panel quantity.
- Whether tooling, test fixtures, coupons or one-time engineering charges should be itemized.
- Required delivery date, delivery country and whether partial shipments are accepted.
- Pack and label requirements, including moisture protection or vacuum packing when specified.
- Quote currency, Incoterm, freight basis, payment terms and quote-validity period.
- Repeat-order status and whether the supplier may reuse prior tooling or data only after revision confirmation.
How to compare two PCB fabrication quotes
| Comparison field | Comparable response | Warning sign |
|---|---|---|
| Revision | Quote names the exact released file revision and date received | Price is detached from a controlled file package |
| Construction | Material, stack-up basis, copper and finished thickness are stated or attached | Only layer count and board size are shown |
| Exceptions | DFM questions and proposed changes are listed before release | Quote assumes the supplier may alter the design without approval |
| Finish and special processes | Finish, via treatments, edge processes and panel method match the RFQ | Special processes are omitted from the price basis |
| Test and evidence | Electrical test, impedance, inspection and reports are itemized | “Test included” without method or deliverable |
| Commercial basis | Quantity, tooling, unit basis, delivery, freight and validity are visible | A low unit price hides panel, tooling or logistics differences |
Illustrative missing-data example
This is a hypothetical workflow example, not a customer case study. It does not claim a quote speed, production result, cost saving or delivery outcome.
A buyer sends copper, mask, legend and drill exports for a multilayer board but does not identify the authoritative outline, copper weight by layer, impedance tolerance or electrical-test basis. One fabricator assumes its own standard construction; another pauses for clarification. The returned prices are not comparable.
The buyer then issues one controlled archive containing the outline, stack-up constraints, layer copper requirements, impedance table, netlist, test requirement, quantities, revision and destination. Suppliers can now quote against the same basis and list any DFM exceptions separately. The improvement is control and comparability, not a guaranteed commercial result.
A practical RFQ release workflow
- Freeze the revision. Export all files from the same released design revision and remove superseded data.
- Run a viewer check. Inspect every copper, mask, legend, paste, drill and profile layer for alignment, polarity and missing data.
- Add the fabrication requirements. Complete construction, materials, copper, finish, tolerances, impedance, panel, test and marking fields.
- Issue one quote basis. Give each supplier the same package, quantities, destination, due date and acceptance requirements.
- Resolve DFM exceptions. Record each proposed change and obtain the required engineering approval before production data are released.
- Approve the production basis. Confirm the final stack-up, material, panel, test and revision that the purchase order references.
Send a quote-ready PCB fabrication package
Upload the Gerber, drill and fabrication files with the board type, layer count, material or performance requirements, copper, finish, quantities, impedance/test needs, required date and destination. Informic can organize the file and requirement review, identify open DFM questions and route the request for fabrication quotation. Final engineering approval, regulatory interpretation and production release remain with the buyer and its authorized reviewers.
Frequently asked questions
Are Gerber files enough for a PCB quote?
They may be enough for a preliminary price on a simple board, but a comparable production quote normally also needs drill and profile data plus the construction, material, copper, finish, tolerance, quantity, test and delivery requirements that are not unambiguously contained in the artwork.
Should I send Gerber X2, IPC-2581 or ODB++?
Use a format the fabricator confirms it can receive and review. Gerber X2 adds standardized attributes to Gerber image data. IPC-2581 is an open standard for exchanging design and manufacturing information. Whichever format is used, release one controlled package and include any requirements that are not encoded or that must be commercially confirmed.
Can the PCB fabricator choose the stack-up?
Yes, when the design allows it. State the electrical, mechanical, material and impedance constraints, then require the proposed stack-up and any geometry changes to be returned for approval before production.
What is the minimum information for an impedance-controlled quote?
Identify target impedance and tolerance, single-ended or differential type, affected layers or net classes, reference plane, stack-up constraints and whether coupons and TDR reporting are required. Clarify whether the fabricator may adjust trace geometry.
Should panelization be controlled by the buyer or the fabricator?
Control it when the assembly process, tooling, depanelization, test coupons or downstream equipment require a fixed array. Otherwise, provide board quantity and assembly constraints and ask the fabricator or assembler to propose a panel for approval.
What does a useful PCB DFM response contain?
It identifies the affected feature and location, explains the manufacturing concern, proposes a specific change, states its impact on the quote or schedule basis and records whether buyer approval is required. It should not silently modify released design data.
Extend the PCB Package Into a Turnkey PCBA RFQ
When the same request also covers component sourcing and assembly, use the turnkey PCBA quote-package checklist to add the controlled BOM, CPL, assembly drawings, variants, inspection and functional-test requirements.
Official references
- Ucamco official Gerber specifications, technical notes and PCB fabrication data guide.
- IPC-2581 Consortium: open digital product model exchange for PCB design and manufacturing data.
- IPC-6012F public table of contents and scope for rigid printed-board qualification and performance.
- UL Solutions PCB safety, material recognition and compliance overview.
Reviewed by Elena, founder of Shenzhen Informic Electronic Limited and active in the electronic-component supply chain since 2012. This checklist supports PCB RFQ preparation and quote comparison; the buyer, design authority, quality team and fabricator remain responsible for design approval, applicable standards and production release.
