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Chalk Product List and Ranking from 7 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

Chalk Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

  1. 日本白墨工業 Saitama//Educational and Research Institutions
  2. シャフナーＥＭＣ Tokyo//Electronic Components and Semiconductors
  3. スミダコーポレーション 営業技術部 Tokyo//Electronic Components and Semiconductors
  4. セイワ 東京本社、関西支社、名古屋営業所、中国無錫　　グループ会社　エレクトロン（長野県松本市） Tokyo//Trading company/Wholesale
  5. 5 日本電磁測器 Tokyo//Industrial Electrical Equipment
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Chalk Product ranking

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

  1. Chalk "Tenshin Inseki Fude" 日本白墨工業
  2. Saturated choke "Choke Coil RI Series" シャフナーＥＭＣ
  3. Vehicle-compatible DC common mode choke CNFC25D24 スミダコーポレーション 営業技術部
  4. Vehicle-mounted DC common mode choke CNFC32D28 スミダコーポレーション 営業技術部
  5. 4 Power Line Choke "Common Mode Choke Coil RN Series" シャフナーＥＭＣ

Chalk Product List

1～15 item / All 17 items

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[Bourns] Common mode choke, cross-reference available.

[Bourns] Common mode choke, cross-reference available.

We offer a wide range of common mode chokes compliant with AECQ200. Ideal for discontinued products and delivery issue solutions!

Bourns leverages over 50 years of experience in magnetic components to offer a comprehensive and continuously expanding portfolio of catalog products and enhanced standard products, along with extensive capabilities for the development of fully customized components. Our advanced magnetic components are designed to meet the essential requirements of power applications such as: - Power conversion - Insulation - EMC compliance - Signal integrity - Improved power density Bourns magnetic products contribute to the efficient, safe, and reliable provision of power, making them a critical element in the design of today's groundbreaking electric vehicles, high-power battery charging, e-mobility, renewable energy, energy storage, the Internet of Things (IoT), and industrial infrastructure.

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  • Inductor Coil

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Power Line Choke "RS Series"

Power Line Choke "RS Series"

It is generally used in conjunction with a suppression capacitor.

The "RS Series" suppresses common mode and asymmetric (P/N -> E) noise signals by connecting in series with the power line and neutral line of the AC power input. Differential mode noise components are also suppressed due to the leakage inductance of the windings. It is generally used in conjunction with suppression capacitors. 【Features】 ■ Inductance: 0.003 - 4 mH ■ Frequency (DC): 400 Hz ■ Rated current: 0.5 - 4 A ■ Attenuation characteristics: Ultra high *For more details, please refer to the PDF document or feel free to contact us. *You can download the English version of the catalog.

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Saturated choke "Choke Coil RI Series"

Saturated choke "Choke Coil RI Series"

Reduction of high-level noise generated by high-speed switching circuits.

The "Choke Coil RI Series" changes impedance during switching. It reduces differential mode noise or common mode noise generated by high-current devices that switch at high speeds. It is generally used in combination with suppression capacitors. 【Features】 ■ Excellent temperature characteristics ■ Through-hole mounting or wiring ■ Choke configuration: 1-pole, 2-pole ■ Up to 25A with 1-pole configuration ■ Custom options available *For more details, please refer to the PDF document or feel free to contact us.

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Power Line Choke "Common Mode Choke Coil RB Series"

Power Line Choke "Common Mode Choke Coil RB Series"

Excellent saturation and temperature characteristics! Can be placed vertically or horizontally on the PCB.

The "Common Mode Choke Coil RB Series" is used for reducing EMI noise up to 600VAC on AC power lines. It can be directly mounted on PCBs equipped with line bypass capacitors, and can also be used in applications requiring low leakage current by adding it in series to single-phase filters. Evaluation printed circuit boards (optional) are also available. 【Features】 ■ Compact size and lightweight design ■ Low leakage magnetic flux ■ Excellent winding insulation ■ Standardized footprint ■ A wide range of rated inductances available ■ Custom specifications can also be accommodated *For more details, please refer to the PDF materials or feel free to contact us.

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Common Mode Choke "Choke Coil EV/EH Series"

Common Mode Choke "Choke Coil EV/EH Series"

Reduce noise across a wide bandwidth! Use of RoHS-compliant and UL-certified components.

The "Choke Coil EV/EH Series" is primarily used for reducing noise on AC power lines. We offer EMI measurement services to check whether your EMC design can obtain the necessary safety standard approvals. Please feel free to take advantage of this service. 【Features】 ■ Rated current: up to 5A ■ Compact and lightweight ■ Low leakage magnetic flux ■ Split winding ■ Standardized footprint ■ Wide range of inductance ratings and current ratings ■ Custom options available *For more details, please refer to the PDF document or feel free to contact us.

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Steel choke

Steel choke

You can mark the position of the wound with a vivid color.

Steel chalk is used for marking the location of defects detected during inspection. It can mark vividly even on wet steel after inspection. Additionally, it has a color tone that is easy to see even outside of a darkroom. It can be easily wiped off with a cloth after use.

  • Plastic processing machines (cutting and rolling)

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Vehicle-compatible DC common mode choke CNFC25D24

Vehicle-compatible DC common mode choke CNFC25D24

High reliability, high temperature resistant common mode choke coil

- Compact and low-profile - Operating temperature range: -40℃ to +150℃ (including self-heating)

  • EMC countermeasure products

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Vehicle-mounted DC common mode choke CNFC32D28

Vehicle-mounted DC common mode choke CNFC32D28

High reliability, high temperature resistant common mode choke coil

- Compact and low-profile - Operating temperature range: -40℃ to +150℃ (including self-heating)

  • EMC countermeasure products

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Chalk "Tenshin Inseki Fude"

Chalk "Tenshin Inseki Fude"

Natural talc! We have eight types of stone pencils available in various sizes, including square, round, and flat shapes.

The "Tenshin Inseki Pencil" is made from talc, and is a product carved from raw stones into various sizes. Since it is made entirely of natural talc, it can be wiped off with cloths, etc. We offer eight types of pencils in different sizes, including rectangular, round, and flat shapes. It is used in the industrial field for marking on iron plates, steel frames, and more. 【Features】 ■ Material is talc ■ Made entirely of natural talc ■ Can be wiped off with cloths, etc. ■ Eight types of pencils available ■ For marking on iron plates, steel frames, etc. *For more details, please refer to the PDF document or feel free to contact us.

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Power Line Choke "Common Mode Choke Coil RN Series"

Power Line Choke "Common Mode Choke Coil RN Series"

It is also possible to mount multiple chokes on the PCB! Compact power line choke.

The "Common Mode Choke Coil RN Series" suppresses common mode and asymmetric (P/N -> E) noise signals by connecting in series with the power and neutral lines of the AC power input. The differential mode noise components are also suppressed due to the leakage inductance of the windings. It is generally used in conjunction with suppression capacitors. 【Features】 ■ High saturation tolerance and excellent temperature characteristics ■ Through-hole mounting ■ 2-pole configuration ■ Multiple housing options ■ Customization available ■ High temperature characteristic types also available *For more details, please refer to the PDF materials or feel free to contact us.

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Power Line Choke "Choke Coil RD Series"

Power Line Choke "Choke Coil RD Series"

Custom support is also available! It can be used for phase angle control circuits in conjunction with a saturation choke.

The "Choke Coil RD Series" reduces common mode and differential mode noise by connecting in series with the power supply line and neutral line of the AC power input. The symmetrical wave component of noise (differential mode) is also reduced by the leakage inductance of the winding. It is generally used in conjunction with suppression capacitors. 【Features】 ■ Excellent temperature characteristics ■ Through-hole mounting or wiring ■ Choke configurations: 2-pole, 3-pole, 4-pole ■ Rated current: up to 64A with 4-pole configuration ■ Multiple housing options *For more details, please refer to the PDF document or feel free to contact us.

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Retroreflective marking chalk "Flash Marker"

Retroreflective marking chalk "Flash Marker"

During the day, it's a vibrant fluorescent color, and at night or in dark areas, it clearly reflects light! Glowing chalk.

"Flash Marker" is a glowing chalk that vividly highlights marked areas when photographed with a flash using a digital camera or similar device. The glass beads embedded in the chalk utilize retroreflective light to shine with fluorescence. By marking cracks, bulges, and peeling on concrete structures, buildings, bridge piers, tunnels, and roads, it provides clearer markings than conventional markers through fluorescence and reflection, helping to prevent accidents. 【Features】 ■ Multi-color & color-coded sorting possible ■ Easy to create clear CAD drawings ■ Harder and less likely to break compared to conventional chalk *For more details, please refer to the PDF materials or feel free to contact us.

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  • others

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Chalk "Tenshin Construction Charcoal Chalk"

Chalk "Tenshin Construction Charcoal Chalk"

Soft touch chalk that can be easily written on materials like wood, cardboard, and concrete.

The 'Tenshin Construction Charcoal Chalk' is a soft-touch chalk similar to wood charcoal. It can also be used on chalkboard surfaces. Additionally, it can be easily written on materials such as wood, cardboard, and concrete, with bold lines and symbols standing out well. 【Features】 ■ Soft-touch chalk similar to wood charcoal ■ Can be easily written on wood, steel, cardboard, concrete, and chalkboard surfaces, with bold lines and symbols being very noticeable ■ Natural erasure type [Unlike oil-based markers, it is not suitable for long-term marking] ■ A sister product of Tenshin Sports Line Chalk *For more details, please download the PDF or feel free to contact us.

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  • furniture

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Chalk "Tenjin Mark Construction Rainy Weather Chalk"

Chalk "Tenjin Mark Construction Rainy Weather Chalk"

Special construction chalk that temporarily protects displayed text without disappearing even in rainy weather.

The 'Tenshin Print Construction Rainy Weather Chalk' is a chalk used for writing on construction site inspection boards during rainy weather inspections and other processes. It is made from gypsum and contains a special adhesive. It does not dissolve in water, allowing it to be used underwater. To start writing, please sharpen the tip of the chalk or wet it before use. 【Features】 ■ The markings do not disappear even in rainy weather ■ A special construction chalk that temporarily protects the displayed text ■ Can be wiped off with a wet cloth ■ Contains a special adhesive ■ Can be written on underwater *For more details, please refer to the PDF materials or feel free to contact us.

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Chalk "Tenshin Marking Chalk"

Chalk "Tenshin Marking Chalk"

Suitable for use with wood, concrete, asphalt, and more! Ideal for industrial applications.

The "Tenshin Marking Chalk" is a chalk suitable for industrial use. Being an oil-based chalk, the written characters are difficult to erase and can be easily written on wet surfaces. It can be erased with solvents like gasoline, but a dedicated cleaner is available. We offer five colors: white, red, blue, yellow, and black. 【Features】 ■ Hexagonal shape (oil-based chalk) in wax type ■ Material: Paraffin ■ Difficult to erase and can be easily written on wet surfaces ■ Usable on wood, concrete, asphalt, etc. ■ Dedicated cleaner available *For more details, please refer to the PDF document or feel free to contact us.

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