PCB Assembly Prototype Services
Rapid prototyping for functional validation. We support 24-hour turnaround, BGA/QFN assembly, and mixed technology. Get your boards assembled with 100% electrical testing and free DFM analysis.
Why Use Our Prototype Service?
Engineering validation is the most critical phase of product development. Delays here cost market opportunities. Our prototype line is decoupled from our mass-production lines, meaning we can prioritize your job without disrupting scheduled runs. We don't just assemble; we validate your design's manufacturability.
Speed & Agility
- 24-Hour Turn: Standard double-sided boards shipped in 24 hours
- Instant DFM: Automated feedback within 2 hours of file upload
- Flexible BOM: Easy substitution of out-of-stock parts with equivalents
- No Stencil Charges: Laser-cut stencils included for standard orders
Technical Precision
- Advanced Packaging: BGA, µBGA, QFN, and 0201 passive support
- X-Ray Inspection: Included for all BGA assemblies
- Mixed Tech: SMT + Through-Hole (Selective/Hand) on same board
- Conformal Coating: Available for prototypes requiring environmental protection
Prototype vs. Production Assembly
Understanding the trade-offs between prototype and production processes helps you plan your budget and timeline effectively.
| Parameter | Standard Prototype | Our Prototype Capability | Production Benchmark |
|---|---|---|---|
| Lead Time | 5-7 Days | 24-48 Hours | 2-3 Weeks |
| Solder Paste | Type 3 (Standard) | Type 4 (Fine Pitch) & Type 5 | Type 3/4 (Optimized) |
| Stencil | Framed (Costly setup) | Frameless Laser (Included) | Electroformed |
| Inspection | Visual Only | AOI + X-Ray (BGAs) | 100% AOI + ICT/FCT |
| Component Sourcing | Customer Only | Turnkey or Consigned | Vendor Managed Inventory |
| Testing | Basic Continuity | Flying Probe + Functional | In-Circuit + Functional |
Our Prototype Workflow
We have streamlined our process to eliminate bottlenecks common in traditional EMS providers.
1
DFM Analysis & Quote
We analyze your Gerber and BOM files. You receive a detailed report highlighting potential solder mask issues, trace clearances, and component availability within 2 hours.
2
Material Procurement
For turnkey orders, we cross-reference parts against our live distributor API. If a part is obsolete, we suggest an active equivalent before you pay.
3
Precision Assembly
Boards are assembled on dedicated prototype lines. We use high-accuracy pick-and-place machines for 0201 components and lead-free reflow ovens with controlled thermal profiles.
4
Verification & Shipping
Every board passes Flying Probe testing. BGAs get X-Ray verification. Boards are cleaned, bagged with desiccant, and shipped via express courier.
Case Study: Industrial IoT Sensor Validation
Challenge
An industrial automation startup needed 5 functional units of a complex sensor board featuring a 0.4mm pitch BGA MCU and RF module for an investor demo in 4 days.
Solution
We prioritized the job on our 24-hour line. Sourced components overnight from local distributors. Used Type 4 solder paste and Nitrogen reflow to ensure BGA joint quality.
Results
5/5 boards passed functional test on first power-up. X-Ray confirmed 100% BGA yield. Client secured Series A funding. Total time from quote to delivery: 72 hours.
Technical Specifications
- Layer Count: 1 to 32 layers
- Board Thickness: 0.4mm to 3.2mm
- Min Trace/Space: 3mil / 3mil (0.075mm)
- Min Hole Size: 0.15mm (Mechanical / Laser)
- SMT Components: 01005, 0201, 0402 up to 1206
- Fine Pitch: 0.3mm pitch QFP/BGA supported
- Surface Finish: ENIG, HASL Lead-Free, OSP, Immersion Silver
- Standards: IPC-A-610G Class 2 (Standard), Class 3 (Available)
Frequently Asked Questions
What is the fastest turnaround time for a PCB assembly prototype?
We offer a 24-hour turnaround for simple double-sided boards and 48 hours for complex multi-layer boards requiring BGA or fine-pitch assembly. This assumes all components are in stock at our distribution partners or provided by the customer.
Do you provide the components for the prototype or do I need to send them?
We offer both turnkey and consignment options. In turnkey mode, we source all parts from Digi-Key, Mouser, and authorized distributors. In consignment mode, you ship the specific components, and we only charge for the assembly labor and PCB fabrication.
What file formats are required for a prototype assembly quote?
We require Gerber RS-274X files for the PCB fabrication, a Centroid or Pick-and-Place file (ASCII CSV format) for component placement coordinates, and a BOM (Bill of Materials) in Excel or CSV format including manufacturer part numbers.
Can you assemble BGAs and QFNs on prototype boards?
Yes, we specialize in complex area array packages. We use X-Ray inspection for BGA solder joint verification to ensure reliability without destructive testing, adhering to IPC-A-610G Class 2 or 3 standards depending on your requirements.
What is the minimum order quantity (MOQ) for prototype assembly?
Our MOQ is 1 piece. We are optimized for engineering samples and low-volume production runs, allowing you to test functionality before committing to mass production.
How do you handle DFM (Design for Manufacturing) checks for prototypes?
Every order undergoes an automated and manual DFM check. We verify trace spacing, solder mask slivers, component clearances, and pad sizes before fabrication. We will place your order on hold and contact you if we find critical issues that could affect yield.
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Ready to Build Your Prototype?
Upload your design files today for a free DFM analysis and quote. We help you get it right the first time.
Start Your PrototypeReviewed by: Engineering Team, yourpcb | Last updated: 2026-04-14