For system integrators, panel builders, and procurement teams in the automotive electronics industry, the gap between a validated design and a production-ready product often bridged by small batch production. Automotive OEMs and Tier 1 suppliers need to validate new ECU designs, sensor modules, and control boards before committing to high-volume tooling. The challenge is finding a PCB assembly partner who can deliver small batches quickly, without compromising quality or traceability.
TPS Elektronik’s quick turn PCB assembly services engaged by an anonymous European automotive Tier 1 supplier to support design validation for a new vehicle control module. The project required fast turnaround, small batch quantities, and full documentation to support the customer’s internal design validation process—from prototype through pilot production.
1. The Challenge: Small Batch Automotive Electronics Validation
The customer—an anonymous European automotive Tier 1 supplier—developing a new electronic control module for a vehicle platform. Before committing to production tooling and high-volume manufacturing, the customer needed to validate the design through a series of build phases:
- Engineering validation (EV): Initial prototype builds to verify circuit functionality
- Design validation (DV): Builds to test performance under environmental and electrical stress
- Production validation (PV): Pre-production builds to validate manufacturing processes
Each phase required small batch quantities—typically 20 to 100 units—with fast turnaround to keep the development schedule on track. The customer’s existing PCB assembly partners could not meet the required lead times, and some lacked the documentation and traceability required for automotive validation.
Key challenges included:
- Speed: Each build phase needed to completed within 2–3 weeks to maintain the development timeline
- Small batch flexibility: Quantities were too small for high-volume lines but too large for manual assembly
- Automotive quality: The assemblies needed to meet automotive quality standards, with full traceability and documentation
- Design iteration: The customer expected design changes between builds, requiring flexibility from the assembly partner
TPS Elektronik engaged to provide quick turn automotive PCB assembly services that would support the customer’s design validation process from EV through PV.
2. The TPS Solution: Quick Turn PCB Assembly for Design Validation
TPS Elektronik’s approach combined speed, flexibility, and automotive-grade quality to support the customer’s validation builds. The solution built around three core elements: rapid prototyping, small batch production, and comprehensive documentation.
Rapid Prototyping and Quick Turn: TPS provided fast turnaround for EV and DV builds, leveraging dedicated NPI lines and quick-turn stencils to minimize setup time. Prototypes delivered within days, not weeks, allowing the customer to iterate quickly.
Small Batch Production: For DV and PV builds, TPS scaled production to the required quantities without sacrificing quality. The same SMT lines and processes used for high-volume production used for small batches, ensuring that the validation builds were representative of final production.
Automotive-Grade Quality: TPS operates under IATF 16949 and ISO 9001 quality management systems. All assemblies built to IPC-A-610 Class 2 or Class 3 standards, with full traceability and documentation to support the customer’s validation requirements.
For more on TPS PCB assembly capabilities, see the SMD PCB Assembly and THT Assembly Guide.
3. Manufacturing Approach: Speed Without Compromise
Speed in PCB assembly does not mean cutting corners. TPS Elektronik’s quick turn service is built on a manufacturing infrastructure designed for both speed and quality.
DFM Review: Before fabrication, TPS engineers reviewed the customer’s design for manufacturability. This early review identified potential issues—component placement, stencil apertures, reflow profiles—that could affect assembly yield or reliability. DFM feedback was provided within 24 hours, allowing the customer to make design adjustments before the build.
Component Sourcing: TPS managed component sourcing, including long-lead items and automotive-grade components. The supply chain team ensured that all components met the customer’s specifications and were traceable to the original manufacturer.
SMT Assembly: Assemblies were built on high-speed SMT lines with 3D SPI, 3D AOI, and X-ray inspection for BGA and bottom-terminated components. The same processes used for production volumes were applied to small batches, ensuring consistency.
Testing: Functional testing was performed using customer-provided test specifications or TPS-developed test fixtures. In-circuit testing (ICT) and flying probe testing were available for complex assemblies.
For more on TPS test capabilities, see the Electronic Components and PCB Assembly Testing Guide.
4. Quality and Documentation for Automotive Validation
Automotive design validation requires more than just functional assemblies—it requires documented evidence that the assemblies meet the required specifications. TPS Elektronik provided comprehensive documentation for every build:
- First Article Inspection (FAI): Dimensional and electrical reports for the first article of each build
- Material certificates: Full traceability of components and materials
- Assembly reports: Documentation of assembly processes, including reflow profiles and inspection results
- Test reports: Functional and in-circuit test results for each unit
- PPAP support: Production Part Approval Process documentation available for PV builds
This documentation supported the customer’s internal validation process and provided the evidence needed for design sign-off. For medical and automotive customers requiring ISO 13485 or IATF 16949 documentation, TPS provides the same level of traceability and quality assurance.
For more on TPS quick turn capabilities for regulated industries, see the EMS PCB Assembly Rapid Prototyping for Medical.
5. Outcomes: Faster Design Validation and Smoother NPI
The quick turn PCB assembly services delivered by TPS Elektronik helped the customer achieve their design validation milestones on schedule and with confidence.
Key Outcomes:
- Fast turnaround: EV and DV builds completed within 2 weeks per phase, keeping the development timeline on track
- Consistent quality: Assemblies met automotive quality standards with full documentation
- Design iteration support: TPS accommodated design changes between builds without delaying the schedule
- Smooth NPI: PV builds validated the production process, enabling a seamless transition to high-volume manufacturing
Customer Feedback: The customer noted that TPS’s ability to deliver small batches quickly—while maintaining the same quality standards as production volumes—was instrumental in accelerating their design validation process. The documentation provided by TPS simplified their internal validation and audit process.
This case study demonstrates how TPS Elektronik combines quick turn capabilities with automotive-grade quality to support design validation for automotive electronics. By providing a single source for prototyping, small batch production, and documentation, TPS helps automotive customers reduce development time and risk.
6. TPS Quick Turn PCB Assembly Capabilities for Automotive
TPS Elektronik’s quick turn PCB assembly services for automotive electronics combine speed, flexibility, and automotive-grade quality in a single integrated workflow.
Assembly Capabilities:
- SMT assembly: Fine-pitch, BGA, QFN, 01005 passives with 3D SPI, 3D AOI, and X-ray inspection
- THT assembly: Selective, wave, and hand soldering with dedicated fixtures
- Mixed technology: Rigid, flex, and rigid-flex assemblies
- Box build: System integration and final assembly
Quick Turn Services:
- Fast stencils and kitting: Dedicated NPI lines for rapid setup
- 24-hour DFM feedback: Design review before fabrication
- Flexible batch sizes: From 1 unit to 10,000 units
- Expedited lead times: Prototypes in days, small batches in 1–2 weeks
Quality and Documentation:
- IATF 16949 and ISO 9001: Automotive and general quality management
- IPC-A-610 Class 2/3: Workmanship standards
- FAI, material certificates, test reports: Full documentation for validation
- PPAP support: Available for production validation builds
TPS supports automotive customers from concept through production, with documented quality and comprehensive support. For custom power supply and battery test systems, see the Electronic Manufacturing Services Complete Guide.
