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  1. Home
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  4. Basic Introduction to CCL
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  • Aug 25, 2024
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Aug 25, 2024

Basic Introduction to CCL

ExPlus ExPlus
CCL is mainly divided into three parts: First, high frequency; next, high speed; and third, ordinary. This classification is primarily based on the following three elements: Df dielectric loss: the loss situation of electrical signals within the material; Dk dielectric constant: the delay situation of electrical signals within the material; Tg glass transition temperature: the heat resistance of CCL. The basic criteria are as follows: Df < 0.005: high frequency; Df between 0.005 and 0.01: high speed; Df > 0.01: ordinary (low speed). Higher-grade CCLs have lower Df/Dk values, resulting in less loss and delay, higher technical requirements, and greater added value. As a result, profit margins and unit prices naturally increase. Further classification results in a total of six parts. Automotive applications are classified as high-frequency CCLs due to their relation to safety, along with 5G. High-speed CCLs are used in servers and switches, while ordinary CCLs are generally used in consumer electronics. The main advantages of high-frequency CCLs are: high efficiency, fast speed, good adjustability, and strong durability. In the manufacturing process, resin, catalyst, and curing agent are first mixed and then applied to glass fiber cloth. This is bonded with PP and covered with copper foil to form the so-called copper foil substrate. In terms of cost ratio, CCL accounts for about 67% of the total PCB cost, and this cost ratio is relatively high.
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Six-layer high-density multilayer circuit board

Generally, high multilayer lamination technology is adopted in manufacturing.

Number of Layers: Six Layers Material: FR-4 (High TG 170) Board Thickness: 1.6 +/- 0.1mm Surface Treatment: Electroless Nickel/Electroless Gold Copper Foil Thickness: H/1/1/1/1H OZ Remark: Blind Holes: L1/L2 & Blind Holes

  • Circuit board design and manufacturing

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Non-cloudy glass pot lid

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The glass pot lid has a hydrophilic heat-resistant coating, allowing you to check the cooking state without any fogging.

Aug 10, 2025

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Checkpoints and Measures for Underfloor Inspection After Typhoons and Heavy Rain

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"Because it's an invisible place, we won't overlook it." Japan's climate is characterized by high temperatures and humidity, and particularly after typhoons and heavy rains, the conditions can be harsh for homes. It's not just the roofs and exterior walls that are affected by rain and wind. The area beneath the floor is actually the most susceptible and often overlooked point. This time, we will explain the "checkpoints for under the floor" that should be confirmed after a typhoon or heavy rain, the "responses" if abnormalities are found, and measures for preventing recurrence. [Table of Contents] ■ Why is underfloor checking necessary? ■ Checkpoints to confirm after a typhoon or heavy rain ■ Responses when damage is discovered ■ Points for preventing recurrence ■ Suggestions from Seihou Products ■ Summary Please be sure to read the [related materials] and [related links]. ↓ ↓ ↓

Aug 08, 2025

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Explosion-proof motor, stock available.

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Explosion-proof motors available in stock We will deliver within 7 days to meet your delivery schedule. 【What is an explosion-proof motor?】 In factories and plants, flammable gases and vapors are present. When these mix with air and come into contact with an ignition source, an explosion or fire can occur. This motor is designed with measures to eliminate such ignition sources. 【Available stock models】 ■ Pressure-resistant explosion-proof motors, explosion-proof grade d2G4 - Foot-mounted type, output 0.4 to 3.7 kW, 4 poles - Flange type, output 0.4 to 0.75 kW, 4 poles ■ Increased safety explosion-proof motors, explosion-proof grade eG3 - Foot-mounted type, output 0.2 to 0.75 kW, 2 and 4 poles - Flange type, output 0.2 to 0.75 kW, 2 and 4 poles

Aug 08, 2025

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We welcomed local elementary and middle school students to the special summer project "Ibara Work Exploration Tour 2025."

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As part of the "Hometown Ibara Future Creation Human Resource Development Project," we welcomed local elementary and middle school students to the special summer program "Ibara Job Exploration Tour 2025," a collaboration between the Ibara City Chamber of Commerce and the Corporate Branding Committee. We conducted a presentation that clearly and enjoyably introduced how our technology supports society, allowing the children to learn about the appeal of manufacturing and the significance of working while interacting with actual devices and products. Through this initiative, we hope to deepen our connection with the community and nurture the curiosity of the children who will carry the future. We sincerely thank everyone who participated, as well as all those involved in planning and organizing the event.

Aug 08, 2025

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Interim Financial Results for the Period Ending December 2025 (Japanese Standards) (Non-Consolidated)

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We will disclose the interim financial results for the fiscal period ending December 2025.

Aug 08, 2025

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