Electronics Manufacturing Services FAQs

Have questions about our electronics manufacturing services? We are here to help! We have put together answers to some of the most frequently asked questions about Siemens Manufacturing, our capabilities, processes, and how we support our customers.

Whether you are learning more about what we do or exploring your manufacturing options, we hope you’ll find the information you’re looking for below. Have a question we haven’t covered? Contact our team — we are always happy to help.


Company Overview

We provide electronics manufacturing services for printed circuit board assemblies and complete electromechanical products. Our capabilities include component sourcing, PCB assembly, box build, design-for-manufacturability and BOM review, prototyping, inspection, testing, and ongoing production support. We work with customers from new product introduction through repeat production.

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No. Siemens Manufacturing Co., Inc. is an independent contract electronics manufacturer founded by John and Jim Siemens in 1963. It is not part of Siemens AG, the multinational technology company. The two companies share the Siemens name but are separate organizations.

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Siemens Manufacturing operates facilities in Freeburg and New Athens, Illinois, and Hermosillo, Mexico. These locations support PCB assembly, box build, testing, and related electronics manufacturing services for customers in the United States and other markets.

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We work with original equipment manufacturers (OEMs) across a wide range of industries, including automotive, industrial, medical and instrumentation, construction, foodservice, consumer electronics, military, communications, gaming, and agriculture.

We support everything from prototypes and complex low-quantity assemblies to repeat medium-volume production and higher-volume applications.

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Acquisition by Aragra Technologies

No. Aragra Technologies acquired Siemens Manufacturing Corporation on September 17, 2026, and the company will continue operating under the Siemens Manufacturing name, simply switching from “Inc.” to “LLC”.

Yes. The company’s personnel and existing customer relationships will remain in place, allowing manufacturing activity to continue uninterrupted.

Siemens Manufacturing can draw on the broader Aragra organization when a program requires resources beyond the existing operation. Depending on the program, customers may gain access to specialized engineering, prototyping, testing, regulated manufacturing, or additional production capacity across the group.

No. The equipment, certifications, and quality systems available to a program depend on the facility performing the work. Customers should discuss their requirements with Siemens Manufacturing to identify the appropriate manufacturing location and confirm its qualifications.


Getting Started

Primary items needed:

  • Accurate and complete bill of materials (in Excel format) including:
    • Component manufacturers
    • Manufacturer part number
    • Brief description of the part
    • Quantity per assembly
    • Reference designators
  • Assembly drawing and schematic (both in PDF format)
    • Schematic not required for quoting but desired at the time of PO
  • Printed circuit board requirements
    • Board material
    • Board layers and dimensions
    • Gerbers
    • Fabrication/drill drawing (in PDF format)
  • Identify programmed parts and specify who will be programming the component.
  • Conformal coating requirements
    • Identify/specify keep-out areas
    • Specify the material/process/specification
  • Quote quantities
  • RoHS compliance required – yes or no
  • Listing of any customer-supplied components
  • Metal fabrication and cable drawings, if applicable
  • Special first article requirements
    • If none specified, Siemens standard process utilized
    • Inspection of 1st board (qty 1) from initial production lot for customer drawing compliance
  • Any special customer arrangements or price agreements with any component suppliers
  • Quote due date

Secondary items needed:

  • Test requirements/fixtures
  • Firmware files needed by the time PO is placed
  • Unique assembly and/or other special customer requirements or instructions
  • Schedule of deliveries
    • Large quantities spread over months based on best guess of demand
      • Mainly start and stop time frame and monthly quantity needed

The team reviews the scope, documentation, material model, production volume, testing requirements, and schedule before preparing a quote. Engineering or purchasing may raise questions when files conflict, component availability affects the build, or inspection and testing requirements need clarification.

Typical quotes take 2 to 4 weeks to provide the best pricing options for production volume. We can expedite this if we are quoting catalog pricing for prototype components. Our quote software gives us a BOM health report, which is passed on to the customer with the quote.

Yes. We offer quick-turn electronics manufacturing, with timing based on component availability, assembly complexity, testing requirements, production capacity, and the completeness of the project files. Standard lead time is typically two to three weeks to shipment, but the schedule must be confirmed during the quoting process. Providing complete manufacturing files and identifying long-lead components early helps prevent delays.


PCB Assembly

Siemens Manufacturing supports surface-mount technology, through-hole assembly, mixed-technology boards, and BGA assembly. Our processes include wave soldering, selective soldering, robotic soldering, axial and DIP insertion, automated optical inspection, X-ray inspection, conformal coating, potting, and product testing.

Our Complete Capabilities

Inspection and testing are critical for producing quality products. Our inspection steps include incoming inspection, 1st article inspection, automated optical inspection (SMT paste placement, SMT component placement, and end-of-line 3D inspection), X-ray analysis of hidden solder joints, and dimensional metrology. Testing options include electrical and functional tests, including in-circuit, custom hi-pot, RF, optoelectronic, and analog and digital functional testing; environmental stress screening (thermal and vibratory); and LED-specific tests.

The test plan depends on board design, accessible test points, customer procedures, fixtures, acceptance criteria, and product risk.

Our Commitment to Quality


Box Build

Box build can extend production beyond the PCBA to include turnkey system assembly, final mechanical assembly, wire preparation, enclosure integration, labeling, and testing. Packaging, fulfillment, and direct shipment are available on a case-by-case basis, with the scope customized to the customer’s program. We can also coordinate cable and wire harness fabrication through a sister company when required.

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Yes. Siemens Manufacturing performs final mechanical assembly, installs PCBAs, and supports wire preparation and harness assembly as part of box-build programs.

Yes. Depending on the program, customers may provide their own test fixtures, or Siemens Manufacturing can quote, design, and build electrical test fixtures for production. The customer and manufacturing team define the test procedure, operating conditions, and acceptance criteria.

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Engineering & NPI

Yes. Prior to manufacturing, Siemens Manufacturing provides design-for-manufacturability and BOM review to identify issues that may impact the build or quality outcome.

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Yes. Prototype and early production builds are un on production equipment and can be used to verify documentation, assembly methods, inspection coverage, test requirements, and material assumptions before repeat production. First-article inspection can provide a documented approval point for a new or revised PCBA. Prototype and quick-turn lead times are typically one to two weeks after the final required component is received.

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The transition begins during quoting with a design-for-manufacturability review to identify questions, confirm manufacturing capability, and assess capacity. A BOM health report is provided with the quote. After we receive the purchase order, the BOM team reviews customer documentation for requirements, such as RoHS compliance, then conducts a production DFM review of documentation, tooling, and the component schedule.

The initial build then moves through first-article inspection and customer approval before release to ongoing production.

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Supply Chain

Yes. Siemens Manufacturing offers turnkey assembly supported by distributor relationships, purchasing processes, global supply chain support, customized inventory management, component traceability, and consignment programs. Material responsibility can also be divided between Siemens Manufacturing and the customer when the project requires a hybrid model.

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The company’s supply chain support includes reviewing availability, lead times, approved alternates, obsolete parts, minimum order quantities, and inventory requirements. When we receive Last-time-buy information from component manufacturers, we share it with the customer, discuss potential risks, and coordinate options with them. Any substitution that changes the approved BOM or product requirements should be reviewed and authorized through the project’s change-control process.

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Siemens Manufacturing reduces counterfeit risk by sourcing components through vetted, authorized distributors whenever possible. If a required part is unavailable through those channels, we obtain customer approval before using an alternate source and require the supplier to provide traceability to the manufacturer or appropriate inspection controls. Our quality team also inspects incoming components before they are released to production.

Yes. Siemens Manufacturing offers full turnkey assembly and can manage component sourcing, PCB assembly, inspection, testing, and box-build activities within an agreed scope. Turnkey programs may also include finished-goods storage, custom packaging, fulfillment, and direct shipment. We also offer consignment and mixed-responsibility material programs.

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Quality

Siemens Manufacturing’s quality management system controls materials, documentation, production processes, inspection, and testing from incoming receipt through final assembly. We are registered to ISO 9001:2015, follow IPC-A-610 Class 2 or 3 workmanship requirements, and maintain a UL-recognized electronic assembly program. Quality controls include documented procedures, operator training, equipment calibration, internal and vendor audits, statistical process controls, traceability, corrective action, and continuous improvement.

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Siemens Manufacturing documents component-level lot traceability, controlled production records, revision control, material records, inspection results, and quality documentation. These records help identify which component lots, files, processes, and production dates were used for a build when an issue requires investigation.

Testing can include in-circuit testing, functional testing, RF verification, thermal testing, burn-in, and environmental stress screening. We work with each customer to provide a custom solution for their needs.

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Production

We support a wide range of production volumes based on the requirements of the program. This can include high-mix, low-volume production with individual assemblies produced in quantities as low as five per month, as well as high-volume programs shipping tens of thousands of assemblies per week. The right fit depends on the overall program, including board complexity, component count, testing requirements, labor content, and material availability.

Yes. At Siemens Manufacturing, our primary focus is on building lasting customer relationships through long-term production.

We can accommodate standard board sizes up to 15″ x 18″. Longer boards may be possible with a custom setup, depending on the project requirements. Contact us to discuss your requirements for longer boards.

We can place components as small as 01005.


Discuss Your Electronics Manufacturing Services Project

Need support with PCB assembly, box build, or ongoing production? Contact Siemens Manufacturing to review your product requirements, production volumes, documentation, and timeline. Our team will help you determine whether our electronics manufacturing services are a good fit for your project.