The Complete PCB Prototyping Process From Design Files to Prototype Delivery
Link documentation, engineering approvals, production, and inspection together so that the R&D team clearly understands what to provide, what to approve, and what to receive at each step.
This page describes the PCB bare board prototyping process. If you also require component procurement and assembly, please confirm the PCBA specifications and schedule separately.
Five Stages, One Basis for Confirmation
01
Requests and Quotes
02
DFM and File Verification
03
Manufacturing and Processing
04
Electrical Testing and Shipping Inspection
05
Packaging, Shipping, and Verification
01 / Preparing to Place an Order
First, prepare these three sets of materials
01
Design Documents
Gerber files, drill files, panel layouts, and any necessary process instructions should all use the same version and be clearly named.
02
Manufacturing Requirements
Number of layers, materials, board thickness, copper thickness, solder mask, and surface treatment; specify impedance, via configuration, dimensional tolerances, and acceptance criteria.
03
Delivery Goals
Quantity, target date, delivery location, and required reports. A BOM is generally not required for bare board prototyping; assembly orders must include a separate BOM and coordinate data.
02 / Five-Step Delivery Process
Define the inputs and outputs for each phase
01
Requirement Confirmation and Quote
Submit complete manufacturing specifications and your desired delivery date, and verify the materials, specifications, quantities, and costs.
Please confirm the document version, specifications, and terms and conditions associated with the quote.
Phase Deliverables: Quote and proposed delivery schedule.
02
Engineering Review and Document Freeze
Evaluate manufacturability issues such as line width and spacing, the relationship between hole diameter and board thickness, solder mask openings, stack-up, and impedance. If any questions arise, follow up for confirmation.
You need to confirm: responses to engineering issues and the final production launch documentation.
Phase Output: List of closed issues and verified versions.
03
Manufacturing and Processing
Organize the manufacturing process according to the confirmed structure. Conventional multilayer PCBs involve the following steps: inner layer trace formation and inspection, lamination, drilling and via plating, outer layer trace formation, solder mask application, surface treatment, and forming. The specific sequence varies depending on the structure and manufacturing process.
Please note: If you need to make changes after production begins, first assess the affected processes, costs, and delivery times.
Phase Output: Prototypes manufactured according to the approved documentation.
04
Electrical Testing and Shipping Inspection
Inspect electrical continuity, appearance, and dimensions according to the order specifications. Electrical testing may be performed using flying probes or test fixtures; specialized inspections, such as impedance and cross-section testing, must be arranged in advance.
You need to confirm: the test methods, acceptance criteria, and the reports that must be provided with the shipment.
Phase Deliverables: Sample items that have passed inspection and the agreed-upon inspection documentation.
05
Packaging, Shipping, and Sample Verification
Pack the products according to product and shipping requirements, confirm the receipt information, and provide logistics details. After receiving the boards, verify the version, quantity, and appearance before proceeding with assembly or functional testing.
You need to confirm the delivery arrangements and document the verification results and revision requests.
Phase Deliverables: Delivery of prototypes, and the basis for the next round of iteration or mass production.
03 / Delivery Schedule Management
First, confirm the starting point, then compare the delivery dates.
Production lead times and shipping lead times are determined separately. Actual production and shipping schedules can only be finalized once the documentation, engineering responses, materials, and order conditions are all in place.
- Regular Orders
- Confirm the schedule based on the number of floors, quantity, materials, and construction methods; do not treat the estimated number of days as a firm commitment.
- Rush Orders
- Please provide your desired shipping date first; our team will then verify the materials and production capacity before confirming whether we can accept your order.
- Special Structures
- HDI, high-frequency, thick-copper, and rigid-flex boards require special review and cannot be subject to the standard lead times for regular boards.
- Time Frame
- Specify whether working days or calendar days, shipment dates or arrival dates are used, and allow for the impact of transit times and holidays.
04 / Reduce Rework
Confirming these details in advance will save you time.
01
The file matches the version
Avoid missing layers, omitted drill holes, or the mixing of new and old files; clearly specify the replacement relationship when reissuing files.
02
Resolve Engineering Issues Promptly
Provide item-by-item responses to the comments regarding the stack-up, impedance, via structure, and material substitutions, and then confirm production.
03
Control Changes After Production Start-up
Before modifying the PCB layout, stackup, or routing, first confirm whether a redesign is necessary and assess the impact on costs and the schedule.
04
Early Assessment of Special Materials
Requests for specific sheet materials and non-standard sizes may require advance preparation and should be made during the quotation phase.
05
Inspection requirements must be included in the purchase order
If you require an impedance report, cross-sections, or other test data, please specify this before production begins.
06
Allow time for prototype validation
Shipping the product does not mean that R&D validation is complete; the plan should include transportation, assembly, testing, and possible iterations.
05 / Frequently Asked Questions
About Prototyping and Validation
Can a DFM review replace circuit functional verification?
No. DFM focuses on manufacturability and cannot verify that the circuit design functions correctly. Prototypes must still undergo assembly, functional, and reliability testing in accordance with product requirements.
Does passing the electrical test mean that the entire unit is functioning properly?
No. Electrical testing of bare boards primarily checks for electrical continuity and other such items, while the functionality of the finished unit also depends on components, assembly, software, and system design.
Is a BOM required for a prototype?
A BOM is typically not required for bare PCB prototyping. If the project involves component procurement, SMT, or other assembly services, a BOM, component placement coordinates, and assembly instructions must be provided.
Can the document still be modified after the project has been approved?
You may request changes, but you must first suspend use of the old version and contact the engineering team. For orders already in production, the impact on work in progress, costs, and delivery dates must be assessed; the documents cannot be overwritten directly.
Once the prototype is approved, can we go straight into mass production?
Prior to mass production, the final version, materials, processes, test plans, and acceptance criteria must be confirmed; if there are changes to the design or process, an assessment must be conducted to determine whether revalidation is necessary.
Shenzhen Jingpeng Electronics
Get the materials ready and start the next round of prototyping.
Submit the design documents and delivery objectives so that the engineering team can first verify manufacturability, provide a quote, and establish a schedule.
