our-service

Our Comprehensive EMS Services in Thailand

At JOHNAN SIAM, we leverage our Japanese Quality manufacturing to contribute to the global society’s growth.

JOHNAN SIAM is an EMS service in Thailand providing board mounting (SMT/DIP), assembly, inspection and board repair as a one-stop solution. From circuit/board design and parts procurement through AOI/SPI/X-ray inspection and packing, it supports customers from production start-up to mass production. Covering high-mix low-volume to mass production, it serves automotive, audio and industrial equipment with Japanese quality.

01.

Key Features and Strengths of Our EMS Solutions

・Since its foundation in 2007, JOHNAN SIAM has been providing robust EMS services in Thailand. We offer flexible support for a wide range of production volumes, from high-mix, low-volume to mass production, including automotive, industrial, and consumer electronics components.

・Our strategic location in Chonburi Province, near Thailand’s largest trading port, Laem Chabang Port, ensures efficient logistics and minimizes flood risk.

・JOHNAN SIAM is equipped with L-size PCBA capabilities across all processes, from Auto Insert, SMT (Surface Mount Technology), AOI (Automated Optical Inspection), to DIP (Dual In-line Package) soldering.

・We provide a true one-stop solution, encompassing conceptual product design (including electrical and mechanical design), parts procurement, parts processing, PCB assembly, board mounting, box assembly, comprehensive quality inspection, efficient packaging and shipping, and essential repair and maintenance services.

Electrical Design

(Including Circuit Design & Board Design)

Mechanical Design Capabilities

・We accommodate a wide range of PCBA requirements, from compact 0402(mm) chips (with 0603(mm) as our common standard) to large odd-shaped components.

・JOHNAN SIAM is equipped with N2 reflow ovens and N2 generators, enabling high-density PCBA and BGA capabilities.

・Our SMT line integrates 3D AOI inspection machines for immediate feedback on mounting failures, ensuring superior quality control.

・JOHNAN SIAM actively proposes solutions to manufacturing challenges, utilizing Value Analysis (VA) and Value Engineering (VE) methodologies to enhance productivity and quality.

・We design and propose inspection equipment, including function testers, tailored to specific customer specifications.

・As an ISO 9001/14001 certified facility, JOHNAN SIAM ensures the same stringent management quality and operational standards as our Japan-based facilities. We consistently deliver highly reliable products that comply with all customer specifications.

Video of SIAM’s manufacturing

Overview of Production Process

Overview of Production Process[Part.1]

Overview of Production Process[Part.2]

Examples of Cooperation with Japanese Offices

・We provide one-stop solutions from product component procurement, board mounting, product assembly, and quality inspection. In cooperation with our Japanese bases, we provide manufacturing based on Japan Quality.

Production and mass-producing support for electronic products

Recent Achievements

We successfully supported a Japanese customer in the mass production of electronic devices. The initial production startup was conducted at our Japanese facility, followed by the seamless transition to secondary mass production at our Thai factory within two months. (January 2022)

Examples of Human Resource Development and Utilization in Manufacturing

Our staff, who have mastered Japanese manufacturing techniques and know-how, will be involved in manufacturing support. Based on the quality of Japanese manufacturing, we will contribute to solving various issues.

Talent Development Achievement

We are proud to have two local leaders in Thailand who have successfully acquired comprehensive manufacturing skills and know-how. This was achieved through collaborative work with our Japanese staff at the Japanese plant, specifically focusing on production startup methodologies. (January 2022)

02.

Our Core EMS Service Summaries

We offer comprehensive contract manufacturing of PCBA for a wide range of applications, including consumer electronics, white goods, automotive, and industrial equipment. Our services extend to thorough inspection, reliable repair of PCBAs, and the sale of specialized oil absorbent materials.

PCBA Assembly & Final Assembly Services

Our Printed Circuit Board Assembly (PCBA) services cover a diverse product range, including various consumer home appliances (such as Air Conditioners, Refrigerators, Rice Cookers, and Televisions), other electronic products, and automotive products.

Precision Inspection and Pre-Assembly Services

JOHNAN SIAM provides high-resolution inspection services, focusing on both dimensional accuracy and appearance, for a wide array of electronic and automotive components.

Reliable Packing & Shipping Services

JOHNAN SIAM manages comprehensive packing design, manufacturing, and shipping services, tailored to meet diverse customer delivery requirements. Please do not hesitate to contact us with any inquiries.

Detailed EMS Service Offerings

Our detailed EMS offerings include contract manufacturing of PCBA for consumer electronics, white goods, automotive, and industrial equipment. Additionally, we provide expert inspection, repair of PCBAs, and the distribution of specialized oil absorbent materials.

Advanced PCBA Base Material Capabilities

We are proficient in working with a variety of PCBA base materials, including Ceramic substrates, Aluminum substrates, Flexible Printed Circuits (FPC), High Multilayer PCBs, Large size PCBs, and Paper Phenol PCBs.

Solder Types Utilized

We utilize both Pb-free solder with Ag (silver) and Pb-free solder without Ag to meet diverse client specifications and environmental standards.

Surface Mount Device (SMD) Component Capabilities

Minimum Pin Pitch: 0.3mm

Mounting Accuracy: +/-30um (when high-production mode is off)

Minimum Chip Size: 0402

Supported Chip Types: BGA, SOP, QFP, LED, QFN, and more.

Maximum Work Size: 360 mm x 410 mm

Supported Board Thickness: 0.5 mm to 1.6 mm (Maximum: 5.0 mm)

Production Methods: SMT Solder / SMT Bonding

Case Study: Successful PCBA with 0402(mm) chip size.

Global Business Collaboration for Enhanced Manufacturing

We offer seamless services including electronic component and material procurement, printed circuit board assembly, and finished product assembly services.

Japan (Domestic) Site Focus: Design development, problem identification for prototypes and preliminary prototypes, and confirmation prototyping (e.g., EVT, DVT, PVT).

Thailand (Overseas) Site Focus: Mass production prototyping and full-scale mass production. This strategic collaboration ensures efficient and high-quality production across all stages.

03.

Certifications: Upholding Global Quality Standards

JOHNAN SIAM proudly holds the following certifications, reflecting our commitment to Japanese quality and international standards:
• ISO9001:2015 Certified
• ISO14001:2015 Certified
• Green Industry (Level 3) Certified
• IATF16949 Certified

04.

Introduction of Our State-of-the-Art Manufacturing Facilities

JOHNAN SIAM’s manufacturing facilities are equipped with cutting-edge machinery designed to meet diverse customer requests and needs. We invite you to explore our advanced capabilities; please do not hesitate to contact us for any inquiries.

Our Extensive Manufacturing Equipment Portfolio

Our advanced equipment ensures high-precision and efficient production:

• Mounting Machines: 7 lines
• Jumper Inserter: 1 machine
• Axial Inserters: 2 Machines (supporting 5.0mm to 26.0mm pitch)
• Radial Inserters: 3 Machines (supporting 2.5mm, 5.0mm, 7.5mm pitch)
• DIP Insertion: 5 Lines
• SPI Inspection: 4 Machines (Chip size 0603 available for comprehensive solder paste inspection)
• AOI Inspection: 7 Machines (for Automated Optical Inspection)
• X-ray Inspection Machine: 1 Machine
• DIP Tank Auto Soldering Machines: 5 Units
• Other Essential Equipment: Includes Pin Boards for ICT, Function Tester machines, Clean booths, and more.

Our Core Manufacturing Processes:

SMT Process

Auto-Insert (AI) Process

DIP Process

Assembly process

Advanced SMT (Surface Mount Technology) Processing Line

Our SMT line integrates cutting-edge machinery for precision and efficiency:

Printing Machine

3D Solder Paste Inspection (SPI)

High-Accuracy Mounter

N2 Reflow Oven

3D AOI (Automated Optical Inspection)

■Introduction of Our Advanced Inspection Machines

■3D Solder Paste Inspection (SPI): For precise solder volume and alignment checks.

■3D AOI (Automated Optical Inspection): Ensures defect-free board assembly post-mounting.

■• X-ray Inspection Machine: Critical for verifying hidden solder joints, such as those on BGA and QFN components.

05.

Introduction of JOHNAN’s Proprietary Management System

To maximize value for our customers, JOHNAN’s unique management system, along with robust quality and environmental management systems, has been fully implemented across all our production sites.

JOHNAN’s original management system, “Discipline & Rhythm,” is a comprehensive management standard. It ensures that all organizational operational items are systematically implemented and periodically reviewed within a defined rhythm or cycle, preventing any operational stagnation. This system meticulously ensures that all predetermined processes and standards (“discipline”) are consistently executed within their prescribed cycles (“rhythm”).

We meticulously extract control items from our operations, articulating them clearly in approximately 30 distinct operating rules. The implementation status of roughly 100 control items undergoes regular periodic checks

Examples of Our Operational Rules and Regulations:
• J-Tree (goal management)
• Health and Safety
• 5S activities
• Continuous improvement activities
• Skill management
• Employee satisfaction enhancement
• Effective communication (reporting, informing, and consulting), and more.

Consistent Quality: JOHNAN’s Management System at Our Thai Site

JOHNAN’s original management system is fully operational at our Thai facility, ensuring the same high level of management and operational excellence as our Japanese sites.

Explore Our Manufacturing in Action: Videos from JOHNAN SIAM

5S Activity Video

Location and Facility Overview Video

Insights into Communication and Human Resource Development

①　5S Activity: Driving Productivity and Quality

To uphold and further enhance the Japanese manufacturing quality we have diligently cultivated over many years, JOHNAN SIAM is continuously implementing various initiatives to improve productivity and quality at our Thai plant. Below are illustrative examples of these ongoing efforts.

Effective Signs Management for Consumable Goods

Optimized Workspace Organization

Efficient Production Flow

②　KAIZEN Activity: Embracing Continuous Improvement

To consistently achieve and refine the Japanese manufacturing quality established over many years, JOHNAN SIAM undertakes continuous efforts to enhance productivity and quality at our Thai plant. Key examples of these initiatives include:

Ongoing Improvement Activities at Our Manufacturing Sites, fostering a culture of continuous enhancement.