PCB Assembly Services (SMT, THT & Mixed Technology Builds)
PCB assembly is the process of placing and soldering electronic components onto a fabricated printed circuit board to create a functional electronic system. At QUADRIONIX, PCB assembly is executed as an engineering-aligned process, where component placement, soldering profiles, and inspection workflows are planned to match the design intent and functional requirements of the product. We support global product teams requiring reliable PCB assembly services from India, with controlled execution, clear communication, and alignment across design, sourcing, and validation stages. Fabricated boards are supplied through our PCB Fabrication services for assembly execution.
Service Overview
Our PCB assembly services are designed for builds where accuracy, repeatability, and functional reliability are critical.
We support
- Engineering prototypes
- Pilot production runs
- Low-to-medium volume builds
It is aligned with
- PCB design constraints
- Component characteristics
- Validation and testing requirements
Assembly is not treated as a standalone activity. This ensures that assembled boards are not only complete — but functionally stable and production-ready. Assembly readiness is validated through our PCB Design Review & DFM services before production.
Technical Specifications
We support Surface Mount Technology (SMT), Through-Hole Technology (THT), and mixed assemblies.
Assembly Types
Surface Mount Technology (SMT), Through-Hole Technology (THT), Mixed technology assemblies
Component Handling
Fine-pitch components, BGA and dense packages, double-sided assembly, High component density layouts. Components are sourced and validated through our BOM Risk and Optimization services to reduce supply risks.
Build Types
prototype and engineering builds, pilot production, low-to-medium volume manufacturing
Pre-production verification
Every project is reviewed before production so design intent, manufacturability, and yield risks are understood early.
Design Alignment
design-for-assembly (DFA) review, component placement feasibility, spacing and accessibility for assembly
Thermal & Process
reflow profile alignment, thermal sensitivity of components, solder joint reliability
Test Readiness
test point accessibility, fixture feasibility, validation planning
Risk Identification
component-related risks, assembly constraints, potential reliability issues. This reduces: assembly defects, functional failures, iteration cycles during validation
INSPECTION VERIFICATION PROTOCOL
Quality & Inspection
Fabrication quality is aligned with engineering intent through controlled inspection, process monitoring, and trace parameters auditing.
Component Sourcing Approach
Assembly can be supported through multiple sourcing models depending on project requirements.
Client-Supplied Components
Procure and supply your own components directly for assembly.
Partial Sourcing Support
We source critical, long-lead, or local parts, while you supply the remaining bill.
Full Sourcing Under Turnkey Model
Complete supply chain ownership including procurement, verification, and execution.
Supply Chain Validation Criteria
All sourced components undergo engineering validation to prevent assembly blockages and ensure manufacturing reliability. We rigorously evaluate:
Applications
Where our execution makes a difference
IoT & Connected Devices
High-density SMT assembly for small footprint, wireless, and power-optimized hardware.
Industrial Control Systems
Robust SMT and THT mixed technology assemblies built for process automation environments.
Instrumentation Electronics
High-fidelity analog and mixed-signal assemblies built with strict testing profiles.
Product Validation Builds
Precision assembly runs built exactly to spec to identify component tolerances early.
Pilot Production Programs
Scale-ready production runs with process traceability and yield audits.
Scope & Focus Areas
We clearly define our manufacturing limits to align engineering capabilities with execution quality.
Supported
Scope.
- 01prototype to medium-volume assembly
- 02engineering-driven builds
- 03assemblies requiring validation and control
Out Of
Bounds.
- 01ultra-high-volume automated production
- 02cost-only driven assembly requirements
- 03fully self-service ordering workflows
Engagement Process
A structured, engineering-led workflow ensuring technical correctness from initial gerbers to export delivery.
Frequently Asked Questions
Clear answers regarding our process, capabilities, and execution boundaries.
Related Workflows
Turnkey PCBA
End-to-end component sourcing, fabrication, assembly, and validation.
PCB Design Review
Pre-production engineering analysis to optimize yield stability and prevent assembly defects.
PCB Layout
Translating schematics into high-yield, manufacturing-aligned board layouts.