Requesting a Quote: A Step-by-Step Walkthrough for New Clients

Requesting a quote for PCB Fabrication and assembly should be straightforward—yet for many new clients, the process feels opaque and overwhelming. What files do you need? What specifications matter? Why does one vendor quote $2,000 while another quotes $8,000 for seemingly the same board? Understanding the quoting process from the inside—the data manufacturers need, the decisions they make, and the factors that drive pricing—transforms you from a passive recipent of numbers into an informed buyer who can specify requirements accurately, compare quotes meaningfully, and avoid costly surprises after production begins. This walkthrough covers every step, from preparing your design files to evaluating the final quotation, with the practical detail that new clients need but rarely receive.

Step 1: Prepare Your Design Files

The foundation of any accurate quote is complete, correctly formatted design data. Incomplete or ambiguous files force manufacturers to make assumptions—and those assumptions may not match your intentions. Here is what you need to prepare:

Gerber Files (Required)

Gerber files are the standard data format for PCB Fabrication. Each layer of your board—copper, solder mask, silkscreen, drill data—requires its own Gerber file. Most EDA tools (Altium, KiCad, OrCAD, Eagle) generate these automatically when you export for Manufacturing.

Before submitting Gerbers, verify the following:

• Aperture list included: Extended Gerber (RS-274X) embeds aperture definitions, but older RS-274D format requires a separate aperture list. Always use RS-274X.
• All layers present: A typical 4-layer board requires at least 12 files: 4 copper layers, 2 solder mask layers, 2 silkscreen layers, 1 board outline, and NC drill files (plated and non-plated). Missing layers delay quoting because the manufacturer must request them.
• Units and format consistent: Verify that all files use the same unit system (metric or imperial) and coordinate format (typically 3:3 or 3:4 integer:decimal format). Inconsistent formats cause misalignment during panelization.
• Board outline defined: The board outline layer must be present and closed. A board without a defined outline cannot be quoted for Manufacturing because panelization and routing parameters are undefined.

Bill of Materials (BOM) (Required for Assembly)

If your quote includes component assembly, the BOM is as important as the Gerber files. A proper BOM contains:

• Reference designators: R1, C3, U5, etc.—matching the designators on your schematic and Pcb layout.
• Manufacturer part number (MPN): The exact part number from the component manufacturer (e.g., "GRM188R71C104KA01D" for a specific Murata capacitor). Generic descriptions ("100nF capacitor") are insufficient because they do not uniquely identify the part.
• Quantity per board: How many of each component are placed on a single assembly.
• Component package/footprint: 0402, 0603, Bga-484, QFP-100, etc. This helps the manufacturer verify that the BOM matches the Pcb footprint.
• Component description: A human-readable description ("100nF 16V X7R 0402") that helps the procurement team cross-reference if the exact MPN is unavailable.

Common BOM problems that delay quoting: missing MPNs forcing the manufacturer to guess at substitutions, reference designators that do not match the board layout, and components specified as "any equivalent" without defining what equivalence means (same value only? same value and tolerance? same value, tolerance, and temperature coefficient?).

Pick-and-Place File (Centroid Data) (Required for Assembly)

The pick-and-place file (also called centroid or XY data) specifies the X-Y coordinates, rotation, and side (top/bottom) of every component on the board. This is what the SMT machine uses to determine placement positions. Without it, the manufacturer must manually extract coordinates from the Gerber files—a time-consuming process that introduces errors.

Assembly Drawing (Recommended)

An assembly drawing shows component placement, polarity markings, and any special assembly instructions (hand-soldered components, specific solder requirements, Conformal Coating zones). It serves as a visual reference that helps manufacturing engineers validate the pick-and-place data against the intended design.

Schematic (Optional but Helpful)

Some manufacturers include a schematic review as part of their DFM (Design For Manufacturing) analysis. Providing the schematic (typically as a PDF) enables the engineering team to identify potential issues—reverse-polarized components, missing bypass capacitors, or design-rule violations—before quoting, rather than discoverng them during production.

Step 2: Define Your Technical Specifications

Gerber files describe what the board looks like, but they do not fully specify how it must be manufactured. Several critical specifications must be communicated separately:

Board Specifications

• Layer count: Total number of copper layers (2, 4, 6, 8, etc.). This is the single most significant cost driver for multilayer boards.
• Board dimensions: X × Y dimensions in millimeters. Board size directly affects panelization efficiency—small boards can be panelized more densely, reducing per-unit cost.
• Board thickness: Standard thicknesses are 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm, and 2.0 mm. Non-standard thicknesses may require special core material and increase cost.
• Copper weight: Outer and inner layer copper thickness, specified in ounces (1 oz = 35 μm). Heavy copper (2 oz, 3 oz, 4 oz) increases cost proportionally.
• Surface finish: HASL (lead-free), ENIG, OSP, Immersion Silver, or Immersion Tin. Surface finish affects both soldering reliability and cost—ENIG is significantly more expensive than HASL but provides superior flatness for fine-pitch components.
• Solder mask color: Green is standard and lowest cost. Red, blue, black, white, and yellow are available at marginal additional cost. Matte and semi-matte finishes cost slightly more than glossy.
• Silkscreen color: White is standard on green solder mask. Other colors are available but may have minimum order requirements.

Material Specifications

• Laminate grade: FR4 (standard), High-Tg FR4 (Tg ≥ 170°C), or specialty materials (Rogers, Isola, Megtron6) for high-frequency or high-reliability applications. Material grade can double or triple the board cost.
• Impedance control: If your design requires controlled-impedance traces, specify the target impedance (e.g., 50Ω single-ended, 100Ω differential) and tolerance (typically ±10% or ±5%). Impedance control requires test coupons on the production panel and adds cost.
• UL rating: UL 94V-0 flammability rating is standard for most applications but must be specified if required—some low-cost FR4 materials do not carry Ul Certification.

Assembly Specifications

• Assembly type: SMT only, through-hole only, or mixed (SMT + THT). Mixed assembly is more expensive because it requires two soldering processes (reflow + wave or selective solder).
• Number of unique parts: The count of distinct component part numbers affects setup cost—each unique part requires a reel position on the pick-and-place machine, a stencil aperture, and procurement effort.
• Total component count: Total number of placements per board drives assembly time and cost.
• Double-sided assembly: Components on both sides of the board require two passes through the reflow oven (or reflow + wave), approximately doubling assembly cost.
• Inspection requirements: AOI (Automated Optical Inspection) is standard on most lines. X-ray inspection for Bga and Qfn packages is specified per-component or per-board, adding cost per inspection.
• Test requirements: Flying probe, ICT (In-Circuit Test), or FCT (Functional Test)—each adds cost but provides progressively more comprehensive defect detection.

Step 3: Specify Commercial and Logistics Requirements

Technical specifications determine what gets built; commercial requirements determine how it gets delivered and paid for.

Quantity and Pricing

• Initial order quantity: Specify the exact quantity you need. Pcb Manufacturing has significant setup costs—tooling, stencil, programming—that are amortized across the order. A quote for 100 boards is not 10× the per-unit price of a 1,000-board order; it may be 25–30× higher per unit because setup costs dominate at low volumes.
• Target price: Providing a target price (or target per-unit price) helps the manufacturer tailor their proposal. If your target is below the achievable price with your specified requirements, a good manufacturer will suggest cost reductions (alternative surface finish, relaxed tolerances, panelization optimization) rather than simply declining to quote.
• Volume forecast: If you expect ongoing production, sharing your 12-month volume forecast enables the manufacturer to structure pricing with volume breaks and potentially invest in dedicated tooling that reduces per-unit cost at higher volumes.

Lead Time

Lead time is a critical commercial parameter with significant cost implications:

• Standard lead time: Typically 10–15 business days for fabrication plus 5–10 days for assembly. This is the lowest-cost option.
• Expedited lead time: 5–7 business days for fabrication. Expect a 30–50% price premium.
• Rush lead time: 2–3 business days for fabrication. Expect a 100%+ premium. Rush orders disrupt factory scheduling and consume overtime labor.
• Component availability: The longest component lead time in your BOM determines the earliest possible assembly start date. If one part has a 16-week factory lead time, a 1-week PCB fabrication lead time is irrelevant—total delivery time is dominated by Component Procurement.

Shipping and Incoterms

• Shipping destination: Provide the complete shipping address. International shipments require additional customs documentation and duties that affect total cost.
• Shipping method: Express air (DHL, FedEx, UPS) for prototypes and small orders; sea freight for high-volume production. Sea freight is 5–10× cheaper per kilogram but adds 3–6 weeks transit time.
• Incoterms: DAP (Delivered at Place) is standard for most PCBA shipments—the manufacturer handles shipping and insurance to your door. EXW (Ex Works) is cheapest but requires you to arrange all logistics. DDP (Delivered Duty Paid) includes customs duties in the quoted price, eliminating surprise charges on delivery.

Payment Terms

For new clients, most manufacturers require prepayment or payment on delivery. Established relationships typically progress to Net 30 terms after 3–6 months of consistent ordering and payment history. Specifying your preferred payment method (wire transfer, credit card, PayPal) in the quote request avoids delays during order placement.

Step 4: Choose Your Assembly Model

The assembly model—who procures the components—significantly affects both the quoting process and the final price.

Turnkey Assembly

In Turnkey Assembly, the manufacturer procures all components on your behalf, fabricates the PCB, assembles the board, and delivers finished product. This is the simplest model for you—one PO, one invoice—but requires the most complete BOM with exact MPNs.

Turnkey advantages: single point of responsibility, manufacturer's Component Procurement expertise and volume purchasing power, no need to manage component inventory or shipping logistics. The manufacturer absorbs component availability risk (to the extent they can source alternatives).

Turnkey quoting considerations: the manufacturer must verify component availability and pricing before quoting assembly cost. This adds time to the quoting process—expect 2–5 business days for a turnkey quote versus 1–2 days for a PCB-only quote—but produces a more accurate and complete price.

Consignment Assembly

In consignment (or partial consignment) assembly, you provide some or all components, and the manufacturer fabricates the PCB and assembles using your supplied parts. This model is useful when you have proprietary components, specialized parts with limited availability, or existing inventory you want to consume.

Consignment quoting considerations: the manufacturer quotes only PCB fabrication and assembly labor—you are responsible for component cost and availability. The manufacturer will specify incoming component requirements (packaging format, moisture-sensitive handling, labeling) that must be met to avoid assembly problems.

Hybrid Model

Many orders use a hybrid approach: the manufacturer procures commodity components (resistors, capacitors, connectors) while you supply specialized or proprietary parts (FPGAs, custom ICs, pre-programmed microcontrollers). The quote will separately itemize manufacturer-procured and client-procured components.

Step 5: Submit Your Quote Request

With files prepared and specifications defined, you are ready to submit. Here is what the process typically looks like:

Online Quote Portal

Most modern PCB manufacturers offer online quoting portals where you upload files and enter specifications through a web form. These portals provide instant or near-instant pricing for standard PCB fabrication parameters. Assembly pricing typically requires manual review because component procurement costs must be verified.

When using an online portal:

• Verify that all uploaded files parse correctly. Portals typically display a board preview—confirm that it matches your design.
• Double-check specifications before submitting. The portal's default values (e.g., 1.6 mm thickness, 1 oz copper, HASL finish) may not match your design intent.
• Save or screenshot your quote configuration. If you need to request changes later, having a record of what you specified is invaluable.

Email Quote Request

For complex assemblies, turnkey orders, or non-standard requirements, an email request to the sales team is often more effective than a portal. Structure your email for clarity:

• Provide a concise project description in the email body.
• Attach all design files as a single ZIP archive with a clear naming convention (e.g., "ProjectName_RevC_Gerbers.zip").
• List all specifications in a structured format—consider using a specification checklist template.
• State your target lead time and quantity explicitly.
• Ask specific questions if you have them ("Can you source alternative MPN X for component U3? What is the cost impact of changing from ENIG to HASL?").

Information That Speeds Up Quoting

Manufacturers quote faster when they receive complete information upfront. The most common causes of quoting delays are:

• Missing BOM line items or ambiguous part numbers requiring back-and-forth clarification.
• Specifications that conflict with the design files—e.g., specifying 6 layers in the quote request but providing 8-layer Gerbers.
• Component availability issues that require sourcing alternatives—providing approved substitution lists in advance eliminates this delay.
• Missing board outline or drill files in the Gerber package.

Providing a single, complete, internally consistent package of design data and specifications can reduce quote turnaround from 5 days to 1 day.

Step 6: Review and Compare Quotes

Receiving a quote is not the end of the process—it is the beginning of evaluation. Here is how experienced buyers analyze pcb assembly quotations:

Verify Line-Item Completeness

A professional quote should itemize costs into distinct categories:

• PCB fabrication: NRE (tooling/setup), per-unit fabrication cost.
• Stencil/tooling: Solder Paste stencil cost (one-time).
• Component cost: Per-component pricing with MPN, quantity, and unit price.
• Assembly labor: Setup cost and per-unit assembly cost.
• Testing/inspection: AOI, X-ray, ICT, FCT costs.
• Shipping: Freight cost to your specified destination.

If a quote presents only a single lump-sum price without itemization, request a breakdown. Without itemization, you cannot compare quotes meaningfully or identify cost drivers to optimize.

Compare Apples to Apples

When comparing quotes from multiple vendors, ensure they are quoting the same scope:

• Does the quote include component procurement, or only assembly labor?
• Are test and inspection costs included, or quoted separately?
• Is shipping included in the quoted price, or will it be invoiced separately?
• Does the lead time include component procurement, or only fabrication and assembly after components are available?
• Are NRE charges (tooling, programming, stencil) included in the unit price or listed separately? If separate, they must be amortized over your order quantity for accurate per-unit comparison.

Evaluate What Is Not Quoted

What a quote omits can be as important as what it includes:

• DFM feedback: Does the manufacturer include any DFM observations with their quote? A manufacturer who flags potential issues ("this via-in-pad will cause solder wicking," "this trace width is below our minimum for 1 oz copper") demonstrates engineering capability that will benefit you during production.
• Component availability notes: For turnkey quotes, are any components flagged as long-lead, obsolete, or requiring substitution? This information affects your project timeline.
• Quality certifications: Does the quote reference the manufacturer's certifications (ISO 9001, Iatf 16949, Iso 13485)? If your product requires specific certifications and the manufacturer does not hold them, the low price is irrelevant.

Step 7: Ask the Right Questions Before Ordering

Before converting a quote to an order, clarify these commonly overlooked details:

• Component substitution policy: What happens if a BOM component becomes unavailable between quote and production? Does the manufacturer request approval for alternatives, or make substitutions autonomously? For safety-critical designs, require explicit approval for any substitution.
• First-article inspection: Is first-article inspection (detailed measurement and verification of the first production board) included in the quote? If not, add it—particularly for new designs. The cost of first-article inspection is trivial compared to the cost of discovering design errors after full production.
• Revision change process: How are design revisions handled after the initial order? Most manufacturers charge for updated tooling (new stencil, updated programs) on revision changes. Understanding this process in advance prevents surprises when you need to spin a rev.
• Warranty and rework policy: What happens if delivered boards fail your incoming inspection? Does the manufacturer rework or replace defective boards at their cost? What is the warranty period, and what defect categories are covered?
• Intellectual property protection: How does the manufacturer protect your design data? Are NDA agreements available? How are Gerber files and BOM data stored and disposed of after production? For proprietary designs, this is not optional.

Common New Client Mistakes

After helping thousands of new clients through the quoting process, certain patterns emerge. Avoid these common pitfalls:

Mistake 1: Requesting Quotes Without Complete BOM Data

Submitting a quote request with "TBD" or generic component descriptions forces the manufacturer to either quote with assumptions (which will not match your final design) or delay quoting until you provide complete data. Neither outcome serves your timeline. Complete your BOM first, then request quotes.

Mistake 2: Comparing Only Total Price

A quote that is 30% lower may reflect different scope (no testing, cheaper surface finish, consignment vs. turnkey), different quality standards (no Dfm Review, minimal inspection), or different lead times. Always compare scopes, not just totals.

Mistake 3: Not Specifying Impedance Control

If your design has high-speed signals requiring controlled impedance but you do not specify it in the quote request, the manufacturer will quote standard fabrication without impedance test coupons. The boards will arrive with uncontrolled impedance, and your high-speed interfaces may not work. This is one of the most common and expensive quoting oversights.

Mistake 4: Ignoring Component Lead Times

A manufacturer may quote 10-day assembly lead time, but if a BGA in your BOM has a 20-week factory lead time, your actual delivery is 20+ weeks. Always ask for a component availability check with turnkey quotes.

Mistake 5: Over-Ordering on First Articles

New clients often order large quantities of a first design to achieve volume pricing. This is risky—if the first production run reveals a design issue, the entire order may need rework or scrap. Order the minimum economically viable quantity for first articles, validate the design, then place the volume order.

Conclusion

Requesting a pcb assembly quote is fundamentally a communication exercise—the more completely and precisely you communicate your requirements, the more accurate and useful the quote will be. Preparing complete Gerber files, a detailed BOM with exact MPNs, explicit technical and commercial specifications, and clear logistics requirements transforms quoting from a back-and-forth negotiation into a efficient, one-pass process.

Equally important is what you do after receiving the quote. Itemized cost breakdowns, scope comparisons across vendors, and pre-order clarification of substitution policies, inspection requirements, and warranty terms protect you from the surprises that commonly derail new client projects. The time invested in preparing a thorough quote request and carefully evaluating the response pays dividends in production quality, on-time delivery, and total project cost.

For new clients ready to request their first Pcb Assembly quote, our team provides online quoting with instant Pcb Fabrication Pricing and 24-hour turnaround on Turnkey Assembly quotes. Our engineering team reviews every design for DFM issues before production begins—because the best time to catch a problem is before it is manufactured.

FAQ

How long does it take to receive a PCB assembly quote?

PCB-only fabrication quotes through online portals are typically instant. Turnkey assembly quotes that include component procurement require 1–5 business days depending on BOM complexity and component availability. Consignment Assembly quotes (where you provide components) are usually faster—1–2 business days—because the manufacturer only needs to price fabrication and assembly labor.

What file formats do PCB manufacturers accept?

Gerber RS-274X is the universal standard for PCB fabrication data. For assembly, most manufacturers accept pick-and-place data in any common format (Altium .csv, KiCad .pos, generic .csv). BOM files are accepted in Excel (.xlsx, .xls) or CSV format. Some manufacturers also accept native EDA files (Altium .PcbDoc, Orcad .brd) and extract the necessary data internally, but this is not universal—always provide Gerbers as a baseline.

Why do PCB quotes vary so much between vendors?

Price variation reflects differences in manufacturing location (China vs. domestic), equipment capability, quality systems, material sourcing, overhead structure, and profit margins. A Chinese factory with automated SMT lines and low labor costs will quote significantly lower than a domestic manufacturer with similar capability. However, the lowest quote is not always the best value—consider total delivered cost (including shipping, duties, and quality risk), communication quality, and the manufacturer's track record with similar projects.

Do I need to specify a minimum order quantity?

No—most PCB manufacturers accept orders of any quantity, including single prototypes. However, setup costs (tooling, programming, stencil) are fixed regardless of quantity, making per-unit cost very high at low volumes. Many manufacturers offer prototype-specific pricing that partially absorbs setup costs to make small orders more accessible, typically for quantities of 5–50 boards.

Can I request changes after receiving a quote?

Absolutly. Quoting is an iterative process. Common post-quote changes include adjusting quantity (to hit a target price), changing surface finish (for cost or performance reasons), modifying lead time, and updating the BOM (if component availability has changed). Requoting after changes is typically fast—1–2 days—since the manufacturer already has your design data on file.