Overview
The Allen-Bradley RC20GF104J resistor is a carbon composition fixed resistor engineered for precision and long-term stability in industrial and consumer applications. Each unit delivers a nominal resistance of 100 kΩ with a ±5% tolerance band, suitable for circuits requiring reliable, non-inductive performance. This box contains 50 resistors ready for immediate deployment in equipment repair, prototyping, or stock replenishment.
Key Features
- 100 kΩ resistance with ±5% tolerance
- 1/2 W power rating (0.5 W) rated for continuous operation
- Carbon composition construction: non-inductive, naturally low-noise performance
- Oxygen-free copper leads for superior corrosion resistance
- Industrial-grade construction tested to MIL-R-11 specifications
- Bulk quantity: 50 units per box for convenient stocking
Technical Specifications
| Specification | Value |
| Resistance Value | 100 kΩ |
| Tolerance | ±5% |
| Power Rating | 1/2 W (0.5 W) |
| Resistor Type | Carbon Composition |
| Lead Material | Oxygen-free copper |
| Operating Temperature | –55 °C to +70 °C |
| Maximum Voltage | 500 V |
| Color Code | Brown–Black–Yellow–Gold |
| Quantity per Box | 50 units |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Certification | MIL-R-11 compliant |
Typical Applications
- Vintage and legacy audio equipment restoration
- Industrial process control circuits
- Test and measurement instrumentation
- Original equipment manufacturer (OEM) repairs and updates
- Educational electronics and hobbyist projects requiring authentic carbon composition performance
Compatibility & Replacements
The RC20GF104J represents the military-grade (RC) designation of Allen-Bradley carbon composition resistors. The equivalent commercial industrial type is the EB1045 (where EB denotes 0.5 W). For applications requiring higher precision or tighter tolerance, the 10% tolerance variant (RC20GF104K / RCR20G104K) is available as an alternative. Modern precision thin-film or metal-film resistors (e.g., Vishay, Yageo) can substitute in circuits where carbon composition’s natural impedance characteristics are not required. However, the organic tone and low-noise signature of Allen-Bradley carbon composition resistors remain preferred in analog audio and high-reliability circuits where legacy component integrity is essential.
