Overview
The Allen-Bradley RC20GF1R8J carbon composition resistor is a military-grade fixed resistor designed for demanding industrial and electronic applications. This 1.8Ω, 1/2W component features ±5% tolerance and axial lead termination, making it suitable for circuit boards, test equipment, and legacy system repair. Allen-Bradley resistors are recognized for their non-magnetic, non-inductive characteristics and reliable performance across temperature and humidity variations.
Key Features
- Hot-molded carbon composition construction—rugged and highly reliable
- Military specification (RC-series) rating for demanding environments
- Oxygen-free copper axial leads for superior connectivity
- Non-magnetic and non-inductive design—ideal for RF and audio circuits
- Stable performance across temperature range up to 70°C
Technical Specifications
The RC20GF1R8J delivers consistent electrical performance with minimal noise characteristics. Carbon composition construction provides inherent surge protection, making these resistors suitable for circuits subject to voltage transients or pulse loading. The part number encoding follows military standard notation where “G” indicates 1/2W rating and “1R8” represents 1.8Ω resistance.
Typical Applications
- Industrial control circuits and legacy PLC systems
- Audio amplifier and valve equipment restoration
- Test and measurement instrumentation
- Surge-sensitive analog circuitry
- Equipment manufactured prior to 2000
Compatibility & Replacements
These resistors are sold as NOS (new old stock) units and are direct drop-in replacements for any circuit requiring a 1.8Ω, 1/2W, ±5% carbon composition resistor. Compatible with legacy tube amplifiers, vintage industrial equipment, and modern designs seeking the sonic or electromagnetic characteristics of carbon composition technology. Lot of 50 units ships ready to install.
