When it comes to PCB assembly, one of the most critical decisions you’ll make is choosing between Turnkey PCB Assembly and Consigned (Kitted) Assembly. Both approaches have their merits, but understanding the differences—and which is best for your project—can save you time, money, and headaches.
At PCBbee, we specialize in both assembly methods, helping clients from prototyping to mass production. In this guide, we break down each model to help you make an informed choice.
What Is Turnkey PCB Assembly?
Turnkey PCB Assembly is a full-service manufacturing solution where the assembly provider manages the entire process—from sourcing components to final testing and shipping. Essentially, you provide the design files (Gerber, BOM, pick-and-place), and the supplier handles the rest.
# Characteristics:
– End-to-End Responsibility: The supplier procures all components, manufactures the PCB, assembles, tests, and ships.
– Simplified Procurement: No need to worry about sourcing, lead times, or minimum order quantities (MOQs).
– Risk Mitigation: The supplier ensures component availability and quality control.
– Ideal For: Startups, SMEs, and projects with tight timelines or limited procurement resources.
# Advantages:
– Time-Saving: You avoid the complexity of managing multiple suppliers.
– Cost Predictability: Fixed pricing based on your BOM and quantity.
– Supply Chain Expertise: Providers often have better pricing and access to components.
– Scalability: Easily scale production without renegotiating with multiple vendors.
# Disadvantages:
– Less Control Over Components: You rely on the supplier’s sourcing decisions.
– Potential for Higher Markup: Some suppliers add a margin on components.
What Is Consigned (Kitted) Assembly?
Consigned Assembly (also called Kitted Assembly) is a model where you provide all the components to the assembly house. The supplier handles only the PCB assembly process—placing components on the PCB you provide (or they fabricate) based on your kit.
# Characteristics:
– Client-Supplied Materials: You purchase and deliver all components to the assembler.
– Assembly-Only Service: The supplier charges for labor, equipment, and overhead.
– Greater Control: You choose component brands, grades, and sources.
– Ideal For: Companies with established supply chains, preferred vendors, or specialized component requirements.
# Advantages:
– Cost Control: You avoid supplier markup on components.
– Component Choice: You select specific brands or alternative parts.
– Existing Inventory: Useful if you already have components in stock.
# Disadvantages:
– Logistical Burden: You manage sourcing, shipping, and inventory.
– Risk of Delays: If components are missing or delayed, assembly stalls.
– Quality Responsibility: You’re responsible for component authenticity and quality.
Side-by-Side Comparison
| Feature | Turnkey Assembly | Consigned Assembly |
|---|---|---|
| Component Sourcing | Handled by supplier | Handled by client |
| Procurement Time | Faster | Slower (client-dependent) |
| Cost Structure | All-inclusive (materials + labor) | Labor + overhead only |
| Component Control | Limited | High |
| Risk Management | Supplier-managed | Client-managed |
| Ideal For | Startups, fast-turn projects | Established companies, niche components |
| Scalability | High | Moderate |
Which Should You Choose?
# Choose Turnkey PCB Assembly If:
– You’re launching a new product and want a hands-off approach.
– You lack an in-house procurement team or supply chain expertise.
– Your project timeline is tight and you need quick turnaround.
– You prefer a single point of contact and predictable pricing.
# Choose Consigned Assembly If:
– You have an existing relationship with component suppliers.
– You require specific, hard-to-find, or custom components.
– You want to leverage bulk purchasing power or existing inventory.
– Your company has strict compliance or sourcing policies.
# Hybrid Approach
Many companies opt for a hybrid model, especially during different project phases:
– Prototyping: Use consigned assembly to test specific components.
– Mass Production: Switch to turnkey for scalability and efficiency.
At PCBbee, we offer flexible solutions—whether you need full turnkey service, consigned assembly, or a customized hybrid approach.
How We Ensure Quality in Both Models?
Regardless of the assembly method, we maintain strict quality standards:
– DFM/DFA Checks: We review your design files to prevent manufacturing issues.
– Automated Optical Inspection (AOI): Ensures component placement accuracy.
– X-Ray Inspection: For BGA and hidden solder joints.
– Functional Testing: Custom test jigs to verify board performance.
– Traceability: Full component lot tracking for reliability.
Industry Trends: The Shift Towards Turnkey
With global supply chain complexities and rising component shortages, more companies are opting for turnkey solutions. According to industry reports, over 60% of SMEs now prefer turnkey assembly for its simplicity and reliability.
Whether you choose Turnkey or Consigned Assembly, the key is partnering with a reliable, transparent, and experienced PCBA provider. At PCBbee, we have the expertise, equipment, and global sourcing network to support your project—from prototype to volume production.
Ready to discuss your next PCB assembly project?
Contact us today for a free quote and DFM review.
