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  6. Core technology of Riku Electric: "Lead Cap Welding"

Core technology of Riku Electric: "Lead Cap Welding"

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last updated:Sep 16, 2025

利久電器 本社
利久電器 本社
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We will introduce one of our core technologies, the lead cap welding process, along with illustrations.

The lead cap functions as the electrode of the resistor by being pressed into the ceramic insulator. We are introducing the welding of lead caps, which is important in the manufacturing of special-sized resistors, along with illustrations. If you are having trouble with existing products due to mismatched cap sizes, or if you are interested in lead caps beyond just resistors, please take a look at our materials. We can flexibly accommodate cap sizes, lead wire diameters, and terminal shapes. If you are interested, please feel free to contact us. Flow after downloading the materials: 1. In addition to the automatic reply email, we will send an email from the Ipros site. 2. If you have specific interests, please reply with details about the items you are considering for use and any current issues you are facing. *We will proceed to the next steps only if we receive contact from you. 3. We will respond to your inquiries and discuss future meetings. 4. We will visit your company for discussions (web meetings are also possible. For custom products, we would prefer to meet in person if possible).

    Resistors
利久電器のコア技術(溶接)表紙.jpg

Core technology of Riku Electric: "Lead Cap Welding"

利久電器のコア技術(溶接)表紙.jpg
利久電器のコア技術(溶接)表紙.jpg
  • Related Link - https://rikyu-denki.co.jp/
  • Special site - Product/service details - https://pr.mono.ipros.com/rikyu-denki/product/

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basic information

This is the process of welding lead wires to caps made of iron and brass. We have production experience with cap inner diameters ranging from 0.99mm to 8.88mm and lead wire diameters from 0.4mm to 1.2mm. We also perform welding for large-diameter caps with inner diameters up to 31.7mm and special-shaped terminals. There may be possibilities for sizes other than those mentioned above, so please feel free to contact us.

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※Delivery will take 30 to 60 days after receiving your order. (Please note that the delivery time may vary depending on the order quantity and specifications, so consider this as a guideline.)

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Manufacturing process for resistor lead caps

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Core technology of Riku Electric: "Lead Cap Welding"

Core technology of Riku Electric: "Lead Cap Welding"

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We manufacture high voltage, high resistance thick film resistors in 7W, 10W, and 12W types.

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For those looking for alternatives to high voltage, high resistance thick film resistors, we manufacture metal glaze high megohm resistors in 7W, 10W, and 12W types starting from 100 pieces (lead time: up to 3 months). *These are similar size products from other companies. These are custom products utilizing the manufacturing technology of our RM series catalog lineup, so we can accommodate resistance values outside the standard series, special terminal shapes, and lead wire lengths. We will provide proposals tailored to your needs, so please feel free to contact us for more details.

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利久電器

利久電器 本社

Electronic Components and Semiconductors

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Our company, primarily focused on the amusement industry, is realizing the diverse small-lot and short-lead-time needs of domestic users in fields such as industrial equipment, and by responding sincerely to all, we have gained the trust of our users. We offer a lineup of major products including carbon film resistors, metal film resistors, thick film resistors, wire-wound resistors, cement resistors, resistor networks, hybrid ICs, and various assemblies, catering to both low and high resistance. Please feel free to consult us regarding discontinued replacements, special shapes, and partial process contracting.

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