Overview
The carbon film resistor round reel is a fixed-value passive component commonly used in electronic circuits to control and limit electrical current flow. Carbon film resistor units are constructed by depositing a thin, pure carbon layer onto a ceramic substrate, then sealed with a protective epoxy coating. This reel-packaged format is ideal for manufacturing environments and component distribution where multiple resistors are needed for assembly or repair applications.
Key Features
- Proven Carbon Film Technology: Thin film of pure carbon deposited on a ceramic carrier to restrict the flow of electric current, delivering stable performance across industrial and commercial applications
- Cost-Effective Solution: Carbon film resistors offer an economical choice for non-critical biasing, LED limiting, and general-purpose circuit designs
- Wide Resistance Range: Typical resistance range spans from 1 Ω to 10 MΩ, covering most standard circuit requirements
- Standard Tolerance: Standard carbon film resistors are ±5%, suitable for general-purpose applications
- High-Temperature Capability: Operating voltages up to 15 kV with a nominal temperature of 350 °C are feasible for carbon film resistors
- Reel Packaging: Round reel format allows for easy dispensing and organized storage in manufacturing and repair environments
Technical Specifications
Carbon film resistors are constructed out of a ceramic carrier with a thin pure carbon film around it. This carbon film functions as the resistive material. The construction process involves hydrocarbon gas, typically methane or benzene passed over the rods at a temperature of around 1000°C. At this temperature the hydrocarbon gas breaks down and a thin film of carbon is deposited onto the rods.
Performance characteristics include typical TCR: -200 to -1000 ppm/°C, meaning resistance decreases slightly as temperature increases. These carbon resistors have a low noise and exhibit excellent environmental stability with proper epoxy protective coating.
Typical Applications
- General-purpose electronic circuits and breadboard prototyping
- LED current limiting and biasing networks
- Power supply circuits and voltage dividers in non-critical applications
- Industrial control and automation equipment
- Commercial appliance electronics and consumer electronics
- Educational and training applications
- Equipment repair and rework with component replacement
Compatibility & Replacements
Compatible With
- Standard through-hole circuit boards and breadboards
- PCB designs requiring axial-lead passive components
- Industrial automation and control panel applications
- General-purpose electronics and power supply designs
- Manufacturing and assembly operations with reel-based component feeding systems
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. Generic carbon film resistor reels from various manufacturers may have identical electrical specifications but differing physical dimensions, lead spacing, or reel configurations.
Works With
- Standard PCB assembly equipment and component placement systems
- Manual soldering and rework stations
- Electronics design software and circuit simulation tools (SPICE-compatible)
- Any circuit design requiring fixed passive resistive elements
- Reel-based component handling and storage systems
