Overview
The Allen-Bradley RCR20G621JS resistor is a military-grade carbon composition fixed resistor designed for demanding applications requiring high reliability and stability. With 620Ω resistance, 0.5W power rating, and ±5% tolerance, this component meets MIL-R-39008 specifications and features oxygen-free copper leads for superior corrosion resistance and electrical conductivity.
Key Features
- Carbon composition construction — Hot-molded cylindrical design with embedded leads for exceptional ruggedness and low noise characteristics
- Military-grade reliability — Manufactured to MIL-R-39008 established reliability standards with consistent performance in harsh environments
- Axial lead configuration — Standard through-hole mounting compatible with breadboards, PCBs, and vintage circuit designs
- Excellent temperature stability — Operating range up to 70°C ensures consistent resistance values across thermal cycles
- Non-inductive, non-magnetic — Ideal for analog circuits, audio applications, and RF snubbing where noise must be minimized
Technical Specifications
- Resistance Value: 620Ω
- Power Rating: 0.5W (500mW)
- Tolerance: ±5%
- Type: Carbon Composition (Hot-molded)
- Lead Material: Oxygen-free copper
- Maximum Operating Temperature: 70°C
- Military Standard: MIL-R-39008 (Established Reliability)
- Configuration: Axial lead (through-hole)
- Condition: New in Box (NOS)
- Quantity per Unit: 1 piece
Typical Applications
- Legacy industrial control circuits and PLC systems
- Audio and vacuum tube amplifier bias networks
- Snubbing networks in analog signal conditioning
- Military and aerospace equipment requiring MIL-spec components
- Test equipment and analog instrumentation repair/restoration
- Low-noise analog filter circuits
Compatibility & Replacements
The RCR20G621JS is a direct replacement for Allen-Bradley industrial resistors in the same resistance and wattage class. While film or wirewound resistors may offer tighter tolerances, carbon composition alternatives such as Vishay Dale film resistor types may be substituted in non-critical applications; however, electrical characteristics and noise profiles will differ. For authentic vintage audio, guitar amplifiers, and military systems requiring original performance, the RCR20G621JS remains the preferred specification.
