Dongguan Ampfort Electronics Co., Ltd.
| Payment Terms | T/T,Paypal, Western Union |
| Supply Ability | 500,000,000 Pieces Per Month |
| Delivery Time | 7-10 Workdays |
| Packaging Details | Tape or bulk |
| Name | Cylindrical Fixed Carbon Film Resistor |
| Resistance Value | 1 Ohm ~10M Ohm |
| Color | Khaki |
| Insulation Resistance | 104MΩ or more. |
| Operating Temp | -55~+155C |
| Standard | 5% |
| Encapsulation | DO-35 |
| Meet | ROHS REACH |
| Termination Style | Axial |
| Mounting Type | PCB Mount |
| Brand Name | AMPFORT |
| Model Number | CFR |
| Certification | RoHS,REACH,UL |
| Place of Origin | Dongguan,Guangdong,China |
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Product Specification
| Payment Terms | T/T,Paypal, Western Union | Supply Ability | 500,000,000 Pieces Per Month |
| Delivery Time | 7-10 Workdays | Packaging Details | Tape or bulk |
| Name | Cylindrical Fixed Carbon Film Resistor | Resistance Value | 1 Ohm ~10M Ohm |
| Color | Khaki | Insulation Resistance | 104MΩ or more. |
| Operating Temp | -55~+155C | Standard | 5% |
| Encapsulation | DO-35 | Meet | ROHS REACH |
| Termination Style | Axial | Mounting Type | PCB Mount |
| Brand Name | AMPFORT | Model Number | CFR |
| Certification | RoHS,REACH,UL | Place of Origin | Dongguan,Guangdong,China |
| High Light | 10M Ohm Cylindrical Resistor ，0.125W Cylindrical Resistor ，Khaki 155C carbon film resistor | ||
Cylindrical Fixed Carbon Film Resistor 1~10M Ohm 1/8W 1/6W 0.25W 0.5W 1W 2W 3W
Overview Of The Cylindrical Fixed Carbon Film Resistor
Carbon film resistors are a type of film resistors. It uses high-temperature vacuum coating technology to closely attach carbon to the surface of the porcelain rod to form a carbon film, then add appropriate joints for cutting, and coat the surface with epoxy resin for sealing protection. The surface is often painted with green protective paint. The thickness of the carbon film determines the size of the resistance, and the thickness of the film and the notch are usually used to control the resistor. Carbon film resistors are also called "thermal decomposition carbon film resistors". A type of thin film resistor in which carbon is deposited on the substrate by carbon that is thermally decomposed at high temperature in a vacuum. Low price, stable performance, wide resistance value and power range.
Application Of The Cylindrical Fixed Carbon Film Resistor
The typical uses for carbon film resistors are in high voltage and high temperature applications. Operating voltages can be as high as 15 kV with nominal temperatures of 350°C. Example uses include high voltage power supplies, radars, x-rays, and lasers.
Features Of The Cylindrical Fixed Carbon Film Resistor
• Flameproof coating is available (specify “CFR”)
• Reduced body size (specify “Miniature”)
• Suitable for automatic machine insertion
• Products with lead-free terminations meet EU RoHS and China RoHS requirements
• Available in resistances from 1 Ohm to 9.1 mOhm
• 1/8W ~ 5W power rating
• 5% tolerance
• Resistor body 2.3 mm in diameter, 6.3 mm in length
• Carbon film construction
• Long-term stability
• Solder plated copper leads
Electrical Parameters Of The Cylindrical Fixed Carbon Film Resistor
Type | Rated power | Maximum working | Maximum overload | Dielectric withstanding | Resistance | |
| Normal size | CF1/8W | 0.125W | 200V | 400V | 350V | 1Ω~10MΩ |
| CF1/4W | 0.25W | 250V | 500V | 500V | 1Ω~10MΩ | |
| CF1/2W | 0.5W | 350V | 700V | 700V | 1Ω~10MΩ | |
| CF1W | 1W | 500V | 800V | 800V | 1Ω~10MΩ | |
| CF2W | 2W | 500V | 1000V | 1000V | 1Ω~10MΩ | |
| CF3W | 3W | 500V | 1000V | 1000V | 1Ω~10MΩ | |
| CF5W | 5W | 500V | 1000V | 1000V | 1Ω~10MΩ | |
| Small size | CF1/4WS | 0.25W | 250V | 400V | 350V | 1Ω~10MΩ |
| CF1/2WS | 0.5W | 350V | 700V | 500V | 1Ω~10MΩ | |
| CF1WS | 1W | 500V | 800V | 700V | 1Ω~10MΩ | |
| CF2WS | 2W | 500V | 1000V | 800V | 1Ω~10MΩ | |
| CF3WS | 3W | 500V | 1000V | 1000V | 1Ω~10MΩ | |
| CF5WS | 5W | 500V | 1000V | 1000V | 1Ω~10MΩ | |
Dimension Of The Cylindrical Fixed Carbon Film Resistor (mm)
| Type | Dimensions | |||||
Normal Size | Small Size | I | L | ψD | ψd | H |
| CF1/8W | CF1/4WS | 60 | 3.2±0.5 | 1.8±0.5 | 0.43±0.05 | 28.0±2.0 |
| CF1/4W | CF1/2WS | 60 | 6.5±0.5 | 2.3±0.5 | 0.45±0.05 | 28.0±2.0 |
| CF1/2W | CF1WS | 60 | 9.0±0.5 | 3.2±0.5 | 0.50±0.05 | 28.0±2.0 |
| CF1W | CF2WS | 60 | 11.5±1.0 | 4.5±0.5 | 0.7 0±0.05 | 25.0±2.0 |
| 81 | 11.5±1.0 | 4.5±0.5 | 0.7 0±0.05 | 35.0±2.0 | ||
| 94 | 11.5±1.0 | 4.5±0.5 | 0.7 0±0.05 | 42.0±2.0 | ||
| CF2W | CF3WS | 60 | 15.0±1.0 | 5.0±0.5 | 0.70±0.05 | 23.0±2.0 |
| 70 | 15.0±1.0 | 5.0±0.5 | 0.70±0.05 | 28.0±2.0 | ||
| 81 | 15.0±1.0 | 5.0±0.5 | 0.70±0.05 | 33.0±2.0 | ||
| 94 | 15.0±1.0 | 5.0±0.5 | 0.70±0.05 | 40.0±2.0 | ||
| CF3W | CF5WS | 94 | 17.5±1.0 | 6.0±0.5 | 0.70±0.05 | 38.0±2.0 |
| CF5W | 94 | 24.5±1.0 | 8.0±0.5 | 0.70±0.05 | 35.0±2.0 | |
NO | Item | Material |
| 1 | Ceramic core | High alumina ceramic is used. |
| 2 | Resistor element | The resistor element shall consist of carbon film. |
| 3 | Terminal | Tinned iron cap. |
| 4 | Connection | The lead wire, which is plated with solder, shall be mounted to the caps by welding process. |
| 5 | Lead wire | Soldered or tinned annealed wire. |
| 6 | Undercoat painting | Electric insulation resin. |
| 7 | Finishing painting | Epoxy resin is used. |
| 8 | Indication | Color code. |
M Type Formed Of The Cylindrical Fixed Carbon Film Resistor
Watts | Dimensions (mm) | |||
| ΦD | L | P±1.0 | H±1.0 | |
| 1/8w,1/6w | 1.8±0.3 | 3.2±0.5 | 6 | 8 |
| 1/4w,1/2ws | 2.3±0.5 | 6.5±0.5 | 10 | 8 |
| 1/2w,1ws | 3.5±0.5 | 9.5±0.5 | 12.5/15 | 10 |
| 1w,2ws | 4.5±1.0 | 11.5±1.0 | 15 | 10 |
| 2w,3ws | 5.0±1.0 | 15.5±1.0 | 20 | 10 |
| 3w | 6.0±1.0 | 17.5±1.0 | 25 | 10 |
| 5w | 8.0±1.0 | 24.5±1.0 | 30 | 10 |
What do the colours mean?
Each of the colour bands has a specific meaning. The first two colours give the base value of the resistor, the next gives the multiplier and the final band the tolerance. If a resistor has five bands, it is a more precise resistor, in which the first three bands represent the base values, and the fourth and fifth represent the multiplier and tolerance respectively.
Benefits of Carbon Composition
Carbon composition resistors are made from a moulded carbon powder that has been mixed with a phenolic resin to bind and create a uniform resistive body. It is then surrounded in an insulating case after attaching end leads.
Carbon composition resistors are used in applications in which the initial tolerance does not need to be any closer than +/- 5% of the value.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Exporter
Year Established:
2014
Total Annual:
1850000-2340000
Employee Number:
51~200
Ecer Certification：
Verified Supplier
Dongguan Ampfort Electronics Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales, committed to becoming a comprehensive supplier of circuit protection components. We introduced advanced quality system,management systems and high-precision automation equipm... Dongguan Ampfort Electronics Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales, committed to becoming a comprehensive supplier of circuit protection components. We introduced advanced quality system,management systems and high-precision automation equipm...
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