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Printed Circuit Assembly (Electronic Assembly) Manufacturing

NAICS 334418 · Computer and Electronic Product Manufacturing6 · SBA size standard: 750 employees

Printed circuit assembly manufacturers build electronic assemblies from customer or internal designs. They receive kits or purchase components, assemble boards through SMT or hand soldering, perform inspection and test, then pack and ship finished units. For a shop that assembles boards on a mix of recurring production runs and custom prototype orders, the specialists turn incoming orders or forecasts into a build schedule, turn the schedule into a component kit and work order, track assembly steps and quality data, and manage shipping and supplier reorders. Process documentation, work instructions, ESD controls and IPC standards stay with the production and quality staff.

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What makes this business different

  • Customer-supplied or consigned components that must be received, inspected and matched to the exact BOM revision
  • Mixed production: scheduled runs for repeat assemblies and expedited prototype or small-lot custom orders
  • Component traceability by lot, date code and supplier for each board serial number
  • ESD-safe workstations, humidity control and static monitoring throughout the floor
  • In-process quality gates including AOI, X-ray, functional test and burn-in when specified
  • Work instructions, revision-controlled drawings and approved assembly aids that must be current at every station
  • Supplier lead times, minimum order quantities and obsolescence tracking for long-lead electronic parts
  • Final packing, labeling and documentation that matches each customer's shipping and compliance requirements

Specialist bots

  • a technician at a workbench reviewing circuit board drawings and a parts list on a monitor beside an open component reel

    Order Coordinator

    Convert incoming purchase orders, forecasts and prototype requests into released work orders with verified BOMs.

    Works in: Ambitious Tasks, Ambitious Docs, Contract Analyzer · Workflows: Order and forecast intake

    Automates

    • Reads order emails and attached files
    • Matches part numbers and revisions to internal records
    • Creates and populates the work order task
    • Drafts order acknowledgment

    Stops for a person

    • Engineering or production manager approves any deviation from the quoted BOM or due date
    • A person sends the final acknowledgment and handles exceptions
  • a planner standing at a schedule board marking assembly line slots with colored magnets next to a row of finished circuit boards

    Production Scheduler

    Build and maintain the master production schedule and flag capacity or material constraints.

    Works in: Ambitious Sheets, Process Optimizer · Workflows: Production scheduling and capacity planning

    Automates

    • Loads orders into the schedule by due date and process time
    • Balances workload across SMT, hand assembly and test stations
    • Calculates material need dates and flags long-lead items
    • Highlights conflicts for expedited orders

    Stops for a person

    • The production manager adjusts priorities and approves overtime or expedites
    • A person releases the final weekly build plan
  • a technician in an ESD smock pulling electronic components from labeled bins and placing them into labeled static bags on a kitting cart

    Materials Coordinator

    Generate kits, manage component inventory and draft purchase orders for shortages and replenishment.

    Works in: Ambitious Sheets, Ambitious Tasks, Ambitious Docs · Workflows: Kitting, inventory and purchasing

    Automates

    • Explodes BOMs into pick lists with lot traceability
    • Subtracts available stock and identifies shortages
    • Drafts purchase orders by supplier
    • Tracks consigned and moisture-sensitive material separately

    Stops for a person

    • Purchasing staff review and place all purchase orders
    • Receiving inspection results are entered by a technician
  • a technician using an optical microscope to inspect solder joints on a printed circuit board mounted in a test fixture

    Quality and Process Recorder

    Capture in-process and final test data, maintain work instructions and generate traceability reports.

    Works in: Ambitious Tasks, Ambitious Docs, Ambitious Sheets · Workflows: Assembly process and quality data collection, Final inspection and customer release

    Automates

    • Attaches current work instructions to each work order
    • Logs test results and serial numbers at each gate
    • Flags failures and creates nonconformance tasks
    • Compiles traveler and certificate of conformance packages

    Stops for a person

    • Technicians confirm test results and enter rework disposition
    • Quality manager reviews and signs final release packages
  • a worker in an ESD jacket placing sealed anti-static bags containing circuit boards into a foam-lined shipping box on a packing table

    Shipping Coordinator

    Prepare final packing, labels, documentation and track shipment to customer.

    Works in: Ambitious Tasks, Ambitious Docs, Email Buckets · Workflows: Shipping, delivery confirmation and invoicing

    Automates

    • Generates packing lists and serial-number labels
    • Creates shipping manifests and customs forms when required
    • Drafts shipment notification messages
    • Records tracking information and triggers invoicing

    Stops for a person

    • A person verifies packaging and applies final labels
    • The owner approves any special shipping instructions or documents
  • a technician scanning a barcode on a reel of electronic components inside an ESD-protected stockroom with shelves of labeled bins

    Compliance and Supplier Clerk

    Track supplier performance, component obsolescence, calibration and compliance checklists.

    Works in: Ambitious Sheets, Ambitious Docs, Ambitious Tasks · Workflows: Supplier management and compliance tracking

    Automates

    • Monitors purchase orders and supplier delivery metrics
    • Flags components nearing end-of-life
    • Generates monthly ESD, calibration and training checklists
    • Organizes audit and corrective-action records

    Stops for a person

    • Management reviews and signs all compliance summaries
    • The quality manager confirms which customer-specific requirements apply each month

Workflows

Order and forecast intake

Starts when: A customer sends a purchase order, forecast update or new prototype request by email or portal

  1. Capture part number, revision, quantity, due date and any special instructions
  2. Verify the BOM and assembly drawing revision against current records
  3. Check material availability or kit status and flag shortages
  4. Create a work order task with linked drawings and test specifications
  5. Draft acknowledgment and delivery commitment for review

Watch for: Exact BOM and revision must be confirmed before production release; Prototype orders may require engineering review before scheduling

Production scheduling and capacity planning

Starts when: Weekly or when new orders arrive

  1. Load confirmed orders and forecasts into the master schedule
  2. Assign build dates to SMT, hand assembly, test and pack stations
  3. Balance line loading against available shifts and equipment
  4. Identify long-lead components and trigger procurement
  5. Flag any capacity conflicts or expedites

Watch for: SMT line changeover time limits how many different assemblies can run in a day; Certain customers require dedicated runs or first-article approval

Kitting, inventory and purchasing

Starts when: One week before scheduled build or on material-shortage alert

  1. Explode the BOM and generate a pick list by component
  2. Pull or receive parts, inspect incoming material and record lot codes
  3. Create a complete kit for each work order and stage at the line
  4. Draft purchase orders for any shortages or planned replenishment
  5. Update inventory records and track consigned customer material separately

Watch for: Moisture-sensitive devices require baking and dry-pack tracking; Customer-owned inventory must be segregated and reported back

Assembly process and quality data collection

Starts when: Start of each scheduled build

  1. Release the current revision work instructions and checklist to the floor
  2. Record operator, station, date and serial numbers at each step
  3. Capture AOI, X-ray, in-circuit test and functional test results
  4. Flag and quarantine any failures for rework or MRB review
  5. Generate traveler and traceability report for the lot

Watch for: Every board must be built and inspected to the exact approved work instruction; ESD logs and solder pot or reflow profiles must be captured daily

Final inspection and customer release

Starts when: After assembly and test completion

  1. Run final visual and dimensional checklist against the drawing
  2. Compile test data, traceability and certificate of conformance
  3. Draft packing list, shipping labels and any required compliance documents
  4. Record serial numbers and prepare for shipment
  5. Move completed order to shipping hold until release

Watch for: Certain customers require source inspection or specific quality records; All documentation must match the exact revision shipped

Shipping, delivery confirmation and invoicing

Starts when: After final release or on customer-requested ship date

  1. Pack boards with required ESD materials and cushioning
  2. Generate shipping labels and commercial invoice when needed
  3. Draft carrier manifest and notify customer of shipment
  4. Record tracking numbers and send shipment confirmation
  5. Trigger invoice generation once delivery is acknowledged

Watch for: International shipments require specific customs documentation; Some assemblies require special handling or temperature logging in transit

Supplier management and compliance tracking

Starts when: Monthly and on renewal or audit dates

  1. Review open purchase orders and supplier performance
  2. Track component obsolescence and issue change notices
  3. Generate checklists for ESD, IPC certification and calibration due dates
  4. Log any corrective actions or nonconformance reports
  5. Prepare summary reports for management review

Watch for: The production manager confirms which standards and customer requirements apply; All checklists and logs are reviewed and signed by responsible staff

Bot templates for this industry

Source: U.S. Small Business Administration, Office of Size Standards, Table of Small Business Size Standards Matched to North American Industry Classification System Codes, version March 2023 (effective 2023-03-17, NAICS 2022). Size standards are shown for reference only.