Nelson Design Services, Inc.

Complete Electronic Product Design and Development

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About the firm

Nelson Design Services, Inc. is an electronic product design and manufacturing practice founded in 1986 and based in Willow Grove, Pennsylvania. It provides printed circuit board design, electrical engineering, firmware development, mechanical engineering, EMI/EMC testing, and PLC system design and build services, supporting electronic products from prototype through full production. Its projects serve defense systems, medical devices, aerospace applications, and industrial control systems.

Established
1986
Firm type
Electrical Engineering · Automation & Controls

Credentials

IPC-A-610 Class III

People

Craig A. NelsonOwner and Principal

Capabilities

Printed Circuit Board Design

Service website

Comprehensive PCB design layouts covering digital high-speed, analog, RF, high-power, and VPX backplane designs, complete with schematic capture and complete documentation.

  • High-Speed and High-Density Design

    Layout design prioritizing signal integrity, impedance control, matched line lengths, and differential pairs.

  • Analog and RF Design

    Circuit layouts optimized for analog, RF, and mixed-signal technologies.

  • VPX and VME Backplane Design

    Specialized backplane and motherboard configurations for high-performance computing architectures.

  • BGA and PGA Component Layouts

    High-density layouts managing fine-pitch ball grid array and pin grid array packages.

  • PCB Documentation Services

    Full documentation packages including schematics, assembly drawings, panelization layouts, and Gerber files.

  • Through-Hole to SMT Conversion

    Redesign services converting legacy through-hole designs to modern surface-mount technology.

  • Reverse Engineering

    Deconstruction and replication of existing circuit boards to address component obsolescence or update legacy products.

Engineering Services

Service website

Complete electrical, mechanical, and systems engineering for electronic products from initial concept through detailed packaging.

  • Circuit Design and Schematic Capture

    Design of digital microprocessors, memory architectures, telecommunications, analog electronics, and low-noise signal processing circuits.

  • Firmware Development

    Embedded programming and firmware design to support hardware functionality.

  • RF and Power Electronics Design

    Design of switch-mode power supplies, inverters, magnetics, power factor correction circuitry, and feedback loop stability analysis.

  • Mechanical Engineering and 3D Solid Modeling

    Creating detailed electro-mechanical packaging and 3D solid models in CAD software to generate assembly and fabrication drawings.

  • Reliability and Statistical Analysis

    Comprehensive analyses including Mean Time Between Failures, component stress, worst-case scenarios, and root cause failure investigations.

  • PLC System Design and Programming

    Custom programmable logic controller systems, control panels, operator interfaces, and data acquisition systems.

Manufacturing Services

Service website

Full-service electronic manufacturing, assembly, and testing from quick-turn prototype builds to complete turnkey production.

  • PCB Assembly

    SMT, through-hole, and mixed-technology assembly using both leaded and lead-free non-RoHS or RoHS materials.

  • Full Product Box Build

    Complete product packaging, including potting, conformal coating, cable and harness assembly, and turnkey production.

  • PCB Fabrication

    Fabricating multilayer, double-sided, and fine-line high-density printed circuit boards using materials like FR4, G10, and Teflon.

  • Functional Testing and Test Fixtures

    Developing custom test fixtures and executing functional test protocols for product validation.

EMI and EMC Engineering

Service website

Analysis, design, and testing to ensure electromagnetic compatibility and regulatory product safety compliance.

  • Compliance Testing

    Testing to domestic and international regulations including FCC, FDA, CE Mark, LVD, and custom standards.

  • Military-Level Testing

    Testing under MIL-STD-461/462 including environmental, altitude, and radiation specifications.

Industries

Defense · Aerospace · Healthcare · Medical Devices · Electronics · Automation & Controls · Manufacturing

Projects

Pharmaceutical Drug Fermentation System 3D Modeling

Pharmaceutical

Project details

Developed a 3D solid model using CAD software to ensure fitment and produced a complete set of documentation drawings for fabrication and assembly of a pharmaceutical drug fermentation system.

Nelson Design Services, Inc. - Engineering Firms