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Motor Control Unit (MCU) PCB Assembly

Motor Control Unit (MCU) is the core component that drives the electric motor of new energy vehicles, converting electrical energy into mechanical energy, and its stable operation depends on high-precision PCBA assembly. Our MCU PCBA processing leverages 7 SMT high-speed placement lines and professional assembly experience, ensuring precise soldering of components and stable circuit performance. The MCU adjusts motor speed, torque, and direction in real time according to vehicle driving needs, ensuring smooth acceleration and deceleration. Built to withstand high temperature and vibration in the engine compartment, it has strong anti-interference ability. With 19+ years of electronic contract manufacturing experience, we provide reliable MCU PCBA assembly services, meeting the high efficiency and reliability requirements of new energy vehicle motors.

    Motor Control Unit (MCU) PCB Assembly--STHL

    Early challenges in MCU PCB adoption—such as weak motor feedback signal capture, severe electromagnetic interference (EMI), and poor electrical safety isolation in industrial and automotive motor control scenarios—have been overcome by specialized PCB assembly technologies, particularly rigid-flex PCBs and high-precision surface mount technology (SMT). These innovations effectively enhance the sensitivity of analog front-ends for capturing faint motor control signals (speed, torque, current, position), while integrating EMI shielding layers to eliminate interference from motors, drives, and external electronic equipment. Rigid-flex PCBs, in particular, balance compact form factors with reliable signal transmission, supporting the miniaturization of MCU modules without compromising motor control performance. This technological leap has enabled MCU PCB assemblies to outperform traditional motor control circuits in key areas:

    • Superior Signal Integrity

      Advanced impedance-controlled routing and ultra-low-noise PCB substrates minimize signal attenuation during the capture and amplification of weak motor feedback and control signals. Equipped with high-resolution (≥16-bit) ADC integration, they ensure the accuracy of high-precision motor control waveforms, laying the foundation for precise speed regulation, torque control, and position feedback.
    • Versatile Form Factor Adaptability

      Compliant with IEC 60664 and IEC 61800 motor control safety standards, the assemblies adopt reinforced isolation designs (such as opto-isolation and galvanic isolation) to prevent electrical leakage and short-circuit risks. High-temperature resistant, shock-resistant, and anti-corrosion materials used in PCB substrates and conformal coatings also support flexible adaptation to diverse MCU types (industrial motor MCU, automotive motor MCU, servo motor MCU), ensuring safety for long-term motor control operation.
    • Reliable Long-Term Operation

      ENIG (Electroless Nickel Immersion Gold) surface finishes and waterproof conformal coatings (IP67 rating) provide excellent corrosion resistance, moisture protection, and electrical stability. Combined with rigorous temperature and vibration testing, the assemblies maintain stable performance in harsh industrial, automotive, and outdoor motor control environments and during long-term continuous motor operation.

    Key Applications Across Motor Control Sectors

    MCU PCB assembly technology powers precise and reliable motor control in diverse industrial, automotive, and intelligent equipment scenarios, supporting motor efficiency, operational stability, and intelligent regulation.

    Industrial Motor Control Systems

    Industrial MCU PCB modules and AC/DC motor control units, featuring real-time speed and torque control functions, integrated with industrial control systems (PLC) for seamless data sharing and production process optimization.

    Servo & Precision Motor Control

    Servo motor MCU PCB modules and precision control units, built with anti-interference circuits and high-precision signal processing to ensure stable performance in robotics, CNC machines, and precision manufacturing equipment.

     Automotive Motor Applications

    Automotive MCU PCB assemblies and vehicle motor control devices, leveraging high-temperature resistant design and fast signal response for 24/7 continuous operation, supporting automotive powertrain motors, steering motors, and auxiliary motors.

    New Energy Vehicle (NEV) Motors

    NEV motor MCU PCB assemblies and electric drive control modules, supporting high-power motor control and energy optimization, providing reliable technical support for electric vehicle traction motors and battery cooling fans.

    Why STHL PCBA should be your top choice for your LED PCBA needs?

    Let's explore the top 10 reasons why!

    Real Factory

    STHL PCBA is a real factory with 10,000+m² highly automated, dust-free factory,7 SMT lines, 2 DIP lines, 2 FCT lines, and 2 box building assembly lines. 

    Quality Guarantee

    We buy components from famous international platform like Mouser, Digikey, Farnell, Future, Avnet, Arrow or the agents. No components substitutes without customers approval!

    Rich Experience

    20+ years of experience in PCB & PCBA field.

    Cost Dowm

    Professional engineering team supports cost down.

    Global Sourcing

    500k parts with 100+ agents and suppliers.

    No MOQ

    No minimum order requests, we accept both prototype and volume quantity orders.

    Fully Certified

    With IATF16949, ISO9001, ISO14001, ISO13485 Certifications.

    NDA

    We ensure all of your projects documents security and sign NDA before RFQ.

    Intelligent Management

    Use Intelligent ERP system, MES (manufacturing execution system) for fast tracking.

    Fast Delivery

    Prototype orders will be fast completed and delivered, mass orders lead time is 4~5 weeks.

    About STHL PCB & PCBA

    LED PCB Assembly Revolutionizing Lighting Technology with Precision and Per (1)

    Shenzhen STHL Technology Co., Ltd. is a high-quality provider of electronics manufacturing services (EMS) in China, we serve customers worldwide along the whole industry chain including product design, material sourcing, PCBA production, cable assembly, box build assembly and comprehensive testing services.

    Established in 2006, we have more than 20 years of experience in electronics contract assembly manufacturing. Currently, we employ more than 220 staff members. Our 10,000 sqm facilities include 7 surface-mount technology (SMT) production lines, 2 through hole technology (THT) lines , 2 function testing lines and 2 box build production lines.

    At STHL, we provide electronics assembly services for energy power, communications, consumer electronics, computers & storage, safety & security, commercial and industrial products. Customers mainly from United States, Brazil, United Kingdom, Germany, Spain, Italy, Poland and . As an IATF16949,ISO9001, ISO14001, and ISO13485 certificated electronics assembly manufacturer, we produce products exactly comply with ROHS standard and quality guarantee. Based on our excellent engineering and production capacities in technical areas such as materials analysis & storage, advanced equipment, reliability testing (AOI, X-RAY, ICT test and function test), high effective SMT and THT assembly, we are recognized as a long-term reliable PCBA vendor by more and more customers wordlwide.

    Products Capability

    Items

    PCB capacity

    PCB name

    LED PCB Assembly: Revolutionizing Lighting Technology with Precision and Performance

    Material

    FR-4; High TG FR-4; Aluminum; CEM-1; CEM-3; Rogers, etc

    PCB type

    Rigid, flexible, rigid-flexible

    Layer NO.

    1, 2, 4, 6, up to 24 layer

    Shape

    Rectangular, round, slots, cutouts, complex, irregular

    Max PCB dimensions

    1200mm*600mm

    Board Thickness

    0.2mm-4mm

    Thickness Tolerance

    ±10%

    Min Hole Size

    0.1mm (4 mil)

    Copper Thickness

    0.5 OZ-3OZ (18 um-385 um)

    Copper Plating hole

    18um-30um

    Min Trace Width

    0.075mm (3mil)

    Min Space Width

    0.1mm (4 mil)

    Surface finish

    HASL, LF HASL, Imm Gold, Imm Silver, OSP etc

    Solder mask

    Green, red, white, yellow, blue, black, orange, purple

    Assembly details

    SMT and Thru-hole, ISO SMT and DIP lines

    Testing on products

    Testing jig/mold , X-ray Inspection, AOI Test, Functional test

    Quantity

    Min quantity : 1pcs. Prototype, small order, mass order, all OK

    Products Capability

    Files needed

    PCB : Gerber files(CAM, PCB, PCBDOC)

    Components : Bill of Materials(BOM list)

    Assembly : Pick-N-Place file

    PCB Panel Size

    Min size : 0.25*0.25 inches(6*6mm)

    Max size : 1200*600mm

    Components details

    Passive Down to 0201 size

    BGA and VFBGA

    Leadless Chip Carriers/CSP

    Double-sided SMT Assembly

    Fine BGA Pitch to 0.2mm(8mil)

    BGA Repair and Reball

    Part Removal and Replacement

    Component package

    Cut Tape, Tube, Reels, Loose Parts

    PCB+ assembly process

    Drilling---Exposure---Plating---Etaching & Stripping---Punching---Electrical Testing---SMT---Wave

    Soldering---Assembling---ICT---Function Testing---Temperature & Humidity

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    Digital Innovation

    APPhored (7)
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    Digital Innovation

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    Digital Innovation

    Material are (1)
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    Digital Innovation

    第24点图替换组合配图1
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    Digital Innovation

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    Digital Innovation

    How to Get Started with STHL

    Ready to partner with us for your LED PCB Assembly project? Here’s how you can get started

    • Contact Us

      Contact Us

      Reach out to our sales team via phone, email, or online chat to discuss your project requirements.
    • Professional Expertise (2)

      Provide Design Files

      Send us your PCB design files (Gerber, BOM, etc.) for a detailed quote.
    • Cost-Effective Solutions

      Get a Quote

      We will provide you with a comprehensive quote, outlining all costs and timelines.
    • Delivery

      Production and Delivery

      Once the quote is approved, our team will begin production, ensuring your PCB assembly is completed on time and to the highest quality standards.

    Make an free consultant

    Whether you need PCB Fabrication or PCBA Assembly Service, STHL delivers innovation and reliability.

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