Overview
The Allen-Bradley RCR20G3R3JS is a high-reliability carbon composition resistor designed for industrial control systems, legacy equipment repair, and critical circuit applications. This 3.3Ω, 0.5W unit features ±5% tolerance and is manufactured to MIL-R-39008 Established Reliability specifications, making it ideal for drop-in replacements in vintage control panels, test equipment, and rugged industrial environments.
Key Features
- Military-Grade Construction: Manufactured to MIL-R-39008 standards with proven reliability in demanding applications
- Hot-Molded Carbon Element: Solid cylindrical carbon resistive element with embedded oxygen-free copper leads for durability and non-inductive performance
- ±5% Tolerance: Tight tolerance ensures accurate circuit performance and compatibility with vintage Allen-Bradley controls
- Temperature Stable: Operating range up to 70°C suitable for industrial cabinet and control panel environments
- Axial Lead Design: Standard through-hole mount compatible with legacy PCB layouts
- Lot of 44 Units: Cost-effective bulk purchase for system integrators, repair shops, and maintenance departments
Technical Specifications
The Allen-Bradley RCR20G3R3JS delivers consistent electrical performance across industrial temperature and humidity ranges:
- Resistance Value: 3.3 ohms
- Power Rating: 0.5W (500 mW)
- Tolerance: ±5%
- Temperature Coefficient: ±1000 ppm/°C (typical)
- Operating Temperature Range: -55°C to +70°C
- Lead Material: Oxygen-free copper
- Configuration: Axial lead through-hole
- Standards: MIL-R-39008 Established Reliability
Typical Applications
Allen-Bradley carbon composition resistors are widely used in:
- PLC input/output module snubbing circuits
- Legacy Allen-Bradley drive and controller repairs
- Industrial test equipment and measurement circuits
- AC power distribution snubbers and commutation networks
- Motor control circuits requiring non-inductive performance
- Emergency replacement stock for maintenance departments maintaining 20+ year-old control systems
Compatibility & Replacements
The RCR20G3R3JS is a direct replacement for other MIL-R-39008 RCR-series resistors with matching value and power rating. While modern film resistors (Vishay RN/RS, Xicon, Yageo) can meet electrical specifications, carbon composition types are preferred in applications requiring non-magnetic, non-inductive performance and proven long-term stability in industrial environments. For legacy Allen-Bradley panel repairs, this part number is the OEM equivalent and maintains original circuit performance characteristics.
