Overview
This carbon film resistor is a fixed-value passive component designed for general-purpose applications in electronic circuits. Carbon film resistors are constructed with a thin layer of pure carbon deposited on a ceramic carrier rod, providing stable resistance across typical operating conditions. The octagon reel packaging format allows for convenient handling and integration in circuit assembly processes.
Key Features
- Carbon Film Construction: Pure carbon film deposited on a ceramic carrier rod ensures reliable performance and low noise generation
- Standard Tolerance: Standard carbon film resistors are ±5% (Gold Band) tolerance for predictable circuit behavior
- Passive Component: Fixed resistance value with no active circuitry—ideal for current limiting, biasing, and voltage divider applications
- Compact Design: Octagon reel format optimizes storage and automated assembly handling
- Pulse Handling: Carbon film resistors can often handle high-voltage pulses better than their precision metal counterparts
Technical Specifications
While exact specifications for this unbranded unit may vary, standard carbon film resistors share these typical characteristics:
- Resistance Range: 1 Ω to 10 MΩ
- Power Ratings: 1/16, 1/8, 1/4, 1/2, 1, or 2 W
- Temperature Coefficient: Typical TCR: -200 to -1000 ppm/°C
- Tolerance: ±5% (standard)
- Composition: Pure carbon film on ceramic substrate
- Self-Inductance: Around 0.01 μH for uncut resistors and up to several μH for spiral cut resistors
- Capacitance: Approximately 0.5 pF
Typical Applications
Carbon film resistors are typically used in high voltage and high temperature applications, with operating voltages up to 15 kV and nominal temperature of 350 °C feasible. Example uses include high voltage power supplies, radars, x-rays, and lasers. They are also widely used for:
- LED current limiting circuits
- Pull-up and pull-down resistors in logic circuits
- Biasing networks in amplifier designs
- Audio frequency circuits where component cost is a factor
- General-purpose fixed-resistor applications in consumer electronics
Compatibility & Replacements
Compatible With
- Standard PCB through-hole assembly processes
- Manual and automated circuit board soldering equipment
- Breadboards and prototyping platforms
- Legacy and modern electronic designs using axial-lead resistors
- Standard 0.1″ spacing PCB layouts
Replaces / Drop-In Replacement For
Verify compatibility with your specific circuit requirements and component specification sheets. Unbranded components may have minor variations in lead finish, dimension tolerance, or color-band marking compared to branded alternatives. Consult your system integrator or engineer before ordering if direct substitution is required.
Works With
- Breadboard prototyping systems
- PCB design software (KiCAD, Eagle, Altium, LTspice)
- Manual and pick-and-place assembly equipment
- Standard through-hole soldering processes (wave, hand, selective)
- Testing and measurement instruments (multimeters, oscilloscopes)
