Overview
The TRW RC20 1/2W 1800 Ohm resistor is a carbon composition fixed resistor designed for reliable performance in a wide range of electrical and industrial applications. This classic through-hole component comes packaged in a box of 50 units, making it suitable for replacement work, prototyping, or maintenance of vintage and modern equipment.
Key Features
- Carbon composite resistive element for stable performance
- 1/2 watt power rating with 1800 Ohm resistance value
- ±10% tolerance rated for consistent operation
- Axial lead configuration for easy through-hole mounting
- Box of 50 units—economical bulk supply
- Proven reliability in analog circuits, filtering, and bias networks
Technical Specifications
- Manufacturer: TRW (TT Electronics)
- Part Number: RC20
- Power Rating: 1/2 Watt (0.5W)
- Resistance: 1800 Ohms (1.8kΩ)
- Tolerance: ±10%
- Termination Style: Axial Leads
- Composition: Carbon Composition
- Quantity per Box: 50 pieces
- Lead Material: Tinned Copper
- Operating Temperature Range: –55°C to +125°C (typical)
Typical Applications
- Vintage audio and radio equipment repair and restoration
- Analog circuit biasing and signal conditioning
- Power supply filtering and smoothing networks
- Industrial test and measurement equipment
- Military and aerospace legacy system maintenance
- Educational and hobbyist electronics projects
Compatibility & Replacements
Compatible With
- Universal through-hole PCB designs operating up to 1/2 watt dissipation
- Standard 0.1-inch (2.54 mm) breadboard and perfboard layouts
- Legacy and modern analog circuit applications
- Military and industrial equipment requiring carbon composition resistors
- Audio amplifiers, tone controls, and impedance matching networks
Replaces / Drop-In Replacement For
- RC20 series variants with matching resistance value and wattage
- Generic 1800 Ohm 1/2W carbon film or composition resistors in equivalent applications
- Older axial-lead fixed resistors of similar specifications in equipment retrofit
Works With
- Analog circuit design methodologies (passive filtering, biasing, termination)
- Standard PCB soldering and hand-assembly techniques
- Temperature-stable applications within the –55°C to +125°C range
- Legacy equipment requiring original-specification carbon composition construction
