Our services are designed for customers who require high reliability, fast turnaround, and cost-effective solutions. With strong engineering expertise and global supply chain integration, we help ensure every project is completed efficiently and to your requirements.
Service Overview
Our low volume PCB assembly services combine advanced manufacturing capabilities with strict quality control.
| Item | Details |
| Production Volume | 1–5000 boards |
| Service Type | Turnkey PCB Assembly |
| Scope | PCB fabrication, sourcing, assembly |
| Assembly Process | SMT / DIP |
| Testing | AOI, ICT, Functional Testing, X-Ray |
DFM (Design for Manufacturability)
We conduct a full engineering review including:Gerber files、BOM、Assembly drawings、Schematics.
We help identify risks such as:Solder bridging、Pad spacing issues、Layout conflicts.
We also optimize panelization to improve efficiency and reduce cost.
DFM Checkpoints
| DFM Item | Check Content | Benefit |
| Solder Mask | Clearance & opening | Prevent defects |
| Pad Design | Size & spacing | Improve reliability |
| Panelization | Layout optimization | Reduce cost |
| File Match | BOM vs Gerber | Avoid mismatch |
| Footprint | Package accuracy | Ensure assembly |
DFA (Design for Assembly)
We optimize test points, fixtures, and testing processes to improve assembly efficiency and testing coverage.
DFA support overview:
| Item | Description |
| Test Point Design | Optimized layout |
| Testing Methods | ICT / Functional Testing |
| Engineering Support | Debugging support |
Quality Assurance
Quality is at the heart of our PCB assembly service. Every assembled board undergoes AOI, ICT, functional testing, X-ray inspection, and 100% electrical testing to ensure product reliability.
We offer a variety of inspection and testing methods:
·Automated Optical Inspection (AOI)
·In-Circuit Testing (ICT)
·Functional Testing
·Multi-stage Visual Inspection
Test Methodology Overview：
| Test Method | Purpose | Application Scenario |
| AOI | Detect visual defects | SMT assembly inspection |
| ICT | Verify electrical performance | Circuit-level validation |
| Functional Testing | Simulate real working conditions | Product-level verification |
| X-ray Inspection | Inspect hidden solder joints | BGA and complex packages |
| Visual Inspection | Manual quality check | Final verification |
For advanced packages such as BGA components, we also offer X-ray inspection to ensure solder joint integrity and the reliability of hidden connectors.
Value-Added Services
To ensure a zero-risk production experience, we offer additional value-added services.
For turnkey project clients, we provide a PCB sample program where:
· A small batch of assembled circuit boards is delivered first.
· The client can conduct actual verification.
· Full production only begins after approval.
This approach is beneficial in:
· Reducing risk
· Reducing rework costs
·Improving product reliability
Cost Optimization
Because cost-effectiveness is crucial for prototyping and small-batch production, we have decided to waive NRE (Non-Recurring Engineering) fees for repeat orders, and our optimized sourcing system ensures competitive pricing.
We implement several strategies:
· Waste non-recurring engineering (NRE) fees on repeat orders
· Waste template/mold fees for returning customers
· Negotiate with global distributors to secure the best prices
· Leverage long-term supplier partnerships
With years of PCB assembly experience, we maintain a balance between:
· High-quality standards
· Competitive pricing
· Fast delivery times
Cost Optimization Table
| Cost Factor | Our Strategy | Customer Benefit |
| Component Pricing | Bulk negotiation with distributors | Lower unit cost |
| Repeat Orders | No NRE & tooling fees | Reduced long-term cost |
| Supply Chain | Global sourcing network | Stable and reliable supply |
| Process Efficiency | Optimized assembly workflow | Faster turnaround |
Get a Quote
To obtain an accurate quote for your small-batch PCB assembly project, please provide the following documents:
· Bill of Materials (BOM)
·German file
Please send your inquiry to:sales@toplinecircuit.com
Our engineering team will:
· Review your documents in detail
· Identify potential issues
· Provide a competitive and transparent quote
· Provide professional optimization suggestions