Turnkey PCB Assembly Services

PCB Procurement • Component Sourcing • Assembly • Agreed Inspection & Testing

Send us your approved manufacturing files, and we will quote PCB procurement, component purchasing, assembly, and the specified inspection and testing as one manufacturing scope.

Leader Global Electronics supports turnkey PCB assembly in Taiwan for prototype, pilot, and repeat-production orders. Purchasing follows your approved BOM, manufacturer part numbers, supplier restrictions, and written approvals.

For partial-turnkey projects, we confirm which materials you will supply and which we will purchase before preparing the quotation.

Request a Turnkey PCB Assembly Quote
Send the complete PCBA RFQ package, sourcing requirements, and quantities to sales@leaderelec.com.tw.

Turnkey PCB assembly process including PCB fabrication, component sourcing, SMT assembly, inspection, THT assembly, testing, box build and final shipment.

Turnkey PCB Assembly Overview

Our turnkey PCB assembly service provides coordinated manufacturing support from engineering review through final shipment.

Complete Turnkey Manufacturing – Engineering review, PCB fabrication, component sourcing, SMT and through-hole assembly, inspection, programming, functional testing, box build, and final shipment coordination.
Flexible Supply Models – Turnkey, partial-turnkey, and consigned manufacturing according to customer sourcing requirements and project needs.
Production Support – Prototype, NPI, pilot, high-mix / low-volume, controlled mid-volume, and repeat production.
Pre-Production Review – Before quotation and procurement, our engineering and sourcing teams review manufacturing documentation, component availability, assembly and testing requirements, and production quantities to identify issues that may affect cost, lead time, or manufacturability.

SMT Pick-and-Place Production Line

Functional Testing Area

Through-Hole (THT) Assembly Line

Product Assembly Line

Manufacturing Support in Taiwan

PCB procurement, component purchasing, assembly, and agreed testing are coordinated within the same turnkey project. Production planning takes material readiness, approved manufacturing files, assembly requirements, and testing capacity into account.

For facility photos, production capacity, and quality certifications, see our Taiwan PCB Assembly page.

View Equipment List

Have a Turnkey PCB Assembly Project?

Send us your BOM, Gerber files, quantities, and project requirements for engineering and sourcing review.

Email: sales@leaderelec.com.tw

What Is Included in Our Turnkey PCB Assembly Service?

Depending on the project, our manufacturing scope can include:

Engineering Review
PCB Fabrication
Component Sourcing & Procurement
BOM Management
SMT Assembly
Through-Hole Assembly
Mixed-Technology Assembly
Programming & Firmware Loading
SPI, AOI & X-Ray Inspection
ICT & Functional Testing
Box Build & System Integration
Final Inspection
Packaging & Shipment Coordination

The manufacturing scope is defined according to the product, BOM, sourcing requirements, production quantity, testing requirements, and delivery schedule.

Engineering Review Before Quotation

A turnkey quotation depends on the complete manufacturing scope rather than PCB dimensions and component count alone.

Before procurement and production planning, our engineering team reviews the available manufacturing documentation for requirements that may affect sourcing, PCB fabrication, assembly, programming, testing, or production.

Typical review items include:

BOM Completeness & Manufacturer Part Numbers
Gerber Data
PCB Fabrication Requirements
PCB Stack-Up, if applicable
Pick & Place Data
Assembly Drawings
Component Polarity & Orientation
Component Availability
Long-Lead-Time Components
Obsolete / EOL / NRND Components
DFM & Panelization
Programming Requirements
ICT / Functional Test Requirements
Special Manufacturing Processes

If documentation, sourcing, or manufacturing issues are identified, they can be reviewed before materials are purchased and production is scheduled.

BOM Review, Purchasing and Material Readiness

We review the BOM for complete manufacturer part numbers, quantities, approved sources, availability, lead times, and purchasing constraints such as MOQ and packaging quantities.

Please identify any mandatory AVL or AML requirements, prohibited purchasing channels, customer-supplied parts, and material traceability requirements in the RFQ.

If a specified component cannot be sourced as requested, we will raise the issue for customer review. Proposed alternatives are identified separately and require written approval before purchasing or use. A matching package alone does not establish electrical or functional compatibility.

The production schedule is confirmed against material availability, approved manufacturing files, and the required assembly and testing capacity.

What the Quotation Covers

The quotation identifies the agreed PCB procurement, component purchasing, assembly, inspection, programming, testing, and packaging scope.

Setup charges apply. If special materials or components are subject to supplier minimum order quantities, procurement will be based on those minimum quantities. Any applicable minimums and related costs will be stated in the quotation. Tooling or test fixture charges are listed separately where required.

Requirements not defined in the RFQ must be clarified before they can be included in the price. Changes to the approved BOM, quantities, testing, or manufacturing scope may require a revised quotation.

PCB Fabrication

PCB fabrication can be coordinated as part of the turnkey manufacturing program.

Depending on the project, we can support PCB requirements including:

Single-Sided, Double-Sided & Multi-Layer PCB
Rigid & Rigid-Flex PCB
Heavy Copper PCB
High-Tg PCB
Controlled Impedance PCB
Customer-Defined PCB Stack-Up
Surface Finish Requirements
Panelization Requirements

PCB fabrication requirements such as material, thickness, copper weight, surface finish, stack-up, controlled impedance, drill specifications, and other customer-defined requirements are reviewed according to the project.

PCB fabrication is coordinated with component procurement and assembly planning under the same manufacturing program.

SMT and Through-Hole Assembly

Once the required materials and manufacturing documents are ready, boards proceed through the agreed SMT, through-hole, or mixed-technology assembly process.

Assembly, inspection, programming, and testing follow the confirmed project scope. For package capabilities, soldering methods, and board-level inspection, see our PCB Assembly Services.

PCB Assembly Inspection & Quality Control

Inspection and quality control are applied according to the product and customer requirements.

Inspection and verification can include:

Incoming Material Verification
First Article Inspection (FAI)
Solder Paste Inspection (SPI)
Automated Optical Inspection (AOI)
X-Ray Inspection
In-Process Inspection
In-Circuit Testing (ICT)
Functional Testing (FCT)
Final Quality Verification
ESD / MSD Control

X-Ray inspection can be used for BGA and other components with hidden solder joints where required.

Inspection methods are selected according to PCB design, component packages, manufacturing requirements, and customer specifications.

Programming & Functional Testing

Programming and testing requirements should be defined during quotation whenever possible.

Depending on the product, support can include:

IC / MCU Programming
Firmware Loading
Firmware Version Control
Power-On Verification
In-Circuit Testing (ICT)
Functional Testing (FCT)
Customer Test Fixture Integration
Customer-Defined Test Procedures

For customer-specific functional testing, test procedures, firmware versions, pass / fail criteria, fixtures, required measurements, and test equipment should be identified before production.

Where required, customer-specific test fixture development can be evaluated separately according to the available test procedures, product specifications, interfaces, expected production requirements, and test scope.

Prototype, NPI & Repeat Production

We support:

Prototype & Engineering Builds
NPI Builds
Pilot Production
High-Mix / Low-Volume Production
Production Ramp-Up
Repeat Production
Controlled Mid-Volume Production

During prototype and NPI stages, engineering, sourcing, manufacturing, programming, and testing requirements can be reviewed before production quantities increase.

For established products, production planning is based on the approved manufacturing documentation, order quantity, forecast demand, component availability, testing requirements, and delivery schedule.

Typical Turnkey PCB Assembly Workflow

1. Engineering Review
Review BOM, Gerber data, assembly documentation, manufacturability, programming, testing, and other project requirements.

2. Component Sourcing & Procurement
Verify BOM availability, identify sourcing issues, review approved alternatives where required, and procure components.

3. PCB Fabrication
Manufacture the PCB according to the approved fabrication requirements.

4. PCB Assembly
Perform SMT, through-hole, or mixed-technology assembly according to the product requirements.

5. Inspection, Programming & Testing
Perform applicable SPI, AOI, X-Ray, programming, ICT, functional testing, and customer-defined verification.

6. Final Quality Verification
Complete final inspection and verify applicable manufacturing and customer requirements before shipment.

7. Packaging & Delivery
Package finished products and coordinate shipment according to customer requirements.

OEM Applications We Support

Our turnkey PCB assembly services support a wide range of OEM electronic products, including:

Industrial Electronics & Automation
Power Supplies & Power Electronics
Battery Chargers & Battery Management Systems
IoT & Embedded Electronics
Communication & Networking Equipment
Medical Electronics
Test & Measurement Equipment
Other Custom OEM Electronic Products

Manufacturing requirements are reviewed according to the product design, BOM, PCB specifications, assembly complexity, testing requirements, regulatory requirements where applicable, and expected production quantities.

Request a Turnkey PCB Assembly Quote

Please submit a complete RFQ package containing:

BOM with manufacturer names, full manufacturer part numbers, reference designators, quantities, and fitted / not-fitted status.
Gerber and drill files, PCB specifications, and stack-up where applicable.
Pick & Place / Centroid data, including board side and component rotation.
Assembly drawings showing polarity, connector orientation, and special assembly requirements.
Quantities to be quoted and target delivery schedule.
Material supply model: turnkey, partial-turnkey, or consigned.
Customer-supplied material list and any mandatory sourcing restrictions.
Programming required: Yes / No.
Functional testing required: Yes / No.
Estimated testing time per board, if applicable.

Please identify all document revisions.

Please confirm whether firmware programming and functional testing are required. If required, describe the scope, estimated time per board, and whether programming tools or test fixtures will be customer-supplied or need to be quoted.

Firmware and software files are not required for the initial quotation. Files and detailed instructions needed for production can be provided after order confirmation and before production begins.

We begin quotation preparation once the required quotation information is complete and the manufacturing scope is confirmed.

Send your complete RFQ package to sales@leaderelec.com.tw.

An NDA can be arranged before you submit confidential files.

Turnkey PCB Assembly FAQ

What is included in turnkey PCB assembly?

Depending on the project, turnkey PCB assembly can include PCB fabrication, component sourcing, SMT/THT assembly, inspection, programming, testing, box build, and other agreed manufacturing requirements under one coordinated program.

What information is required for a turnkey PCB assembly quotation?

Typical RFQ information includes a BOM with manufacturer part numbers, Gerber files, PCB specifications, Pick & Place data, assembly drawings, required quantities, and applicable programming or functional testing requirements.

Do you support turnkey, partial-turnkey, and consigned PCB assembly?

Yes. For turnkey projects, we manage the agreed PCB and component procurement requirements. For partial-turnkey projects, customers can provide selected materials. For consigned projects, customers can provide some or all production materials.

What happens if some BOM components are unavailable or EOL?

Our sourcing and engineering teams can review component availability, lifecycle status, lead time, approved manufacturers, and potential alternative or second-source components.

Alternative components or materials require written customer approval before purchasing or use.

Do you provide programming and functional testing?

Yes. Depending on project requirements, support can include IC / MCU programming, firmware loading, power-on verification, ICT, functional testing, customer test fixture integration, and customer-defined test procedures.

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