cen techonology

 Understanding the specific demands concerning varistors in PCB assembly ( PCBA) design is essential. Here's a breakdown of what PCBA design demands from varistors: Operating Temperature/Storage: Maintain the working temperature of the circuit within the specified range outlined in the product's specifications. After assembly , store the circuit within the product's specified temperature range when it's not operational. Avoid using temperatures higher than the specified maximum operating temperature. Operating Voltage: Keep the voltage applied across the varistor terminals below the maximum permissible voltage. Incorrect usage might result in product failure, short circuits, or potential heating issues. Although the usage voltage should be below the rated voltage, in cases of continuous high-frequency or pulse voltage, thoroughly assess the varistor's reliability. Component Heating: Ensure that the surface temperature of the varistor re...

 In the realm of electronic product manufacturing, Surface Mount Technology (SMT) plays a pivotal role, directly influencing end-product performance and reliability. As technological advancements surge ahead, traditional SMT service providers reveal limitations that fail to meet the dynamic needs of hardware companies. Challenges like irregularities in the SMT market, inconsistent processing quality, high material procurement costs, and hurdles in prototyping for smaller batch productions have surfaced. The demand for a more comprehensive, efficient PCBA one-stop service is now the preferred choice among numerous hardware firms. As a pioneer in transforming PCBA services , CEN Manufacturing has meticulously crafted a comprehensive PCBA one-stop service model founded on years of invaluable experience. Today, let's delve into the seamless process of CEN PCBA's all-encompassing service. Step One: BOM Ordering - An Integrated Supply Chain Once the hardware company...

 In the daily production process, meticulous attention to various production details is crucial to ensuring superior manufacturing quality. Adhering strictly to stipulated requirements with a dedicated and responsible approach during production is fundamental for lean processing, which is pivotal for the sustenance of business growth. Below, our team at the SMT Mounting Factory in MTI PCBA has compiled a guide to key considerations during SMT assembly processes. Let's delve into it together: Workshop Temperature and Humidity Maintaining optimal conditions in the production workshop is essential. For SMT workshops, the ideal temperature is 24±2℃, with humidity levels around 40±10%RH. Extreme temperatures can lead to soldering issues like tin beads or solder bubbles and stencil-related problems during printing. Material Storage Pre-SMT assembly, the storage conditions of materials often get overlooked. For instance, PCBs exposed to air for extended periods tend to absorb moisture, r...

  1.Surface Mount Assembly (SMA) Completes PCB assembly using surface mount technology for components. 2.Dispenser Device used for dispensing adhesives. 3.Pick and Place Operation of picking surface-mounted components from feeders and placing them onto specified positions on the PCB. 4.Placement Equipment Process equipment responsible for placing surface-mounted components. 5.High Placement Equipment Placement machine with a speed exceeding 20,000 dots per hour.  6.Multi-function Placement Equipment Machine used for mounting larger-shaped, narrow-leaded surface-mounted devices, demanding higher accuracy.  7.Hot Air Reflow Soldering Reflow soldering using a forced circulating hot air flow. 8.Reflow Soldering Melts pre-distributed solder paste on PCB pads to connect surface-mounted components.  9.Wave Soldering Utilizes melted solder, creating a designed wave for electronic components on a PCB to form connections.  10.Printer Specialized equipment for steel mesh p...

 The FPC , also known as the Flexible Printed Circuit Board , has a significantly different assembly and soldering process compared to rigid circuit boards. This is because the FPC's flexibility and softness require special carrier boards for fixation and transmission. Without these, basic SMT processes like printing, mounting components, and reflow soldering cannot be completed. Pre-treatment of FPC: FPCs , being flexible, often absorb moisture during transportation and storage due to their softness. Pre-baking is necessary before SMT assembly to gradually force out absorbed moisture. Failure to do so might result in problems like delamination or bubbling during reflow soldering. Pre-baking typically involves temperatures of 80-100℃for 4-8 hours, although higher temperatures can be used with shorter durations after testing. It's essential to confirm FPC's tolerance to the set baking temperature through trials or consultation with the manufacturer. Production Process: Sp...