Overview
The Motorola 680 ohm 1/2W carbon composition resistor is a classic vintage component designed for reliable performance in mid-century electronics. These axial-lead resistors feature a ±10% tolerance rating and carbon composition construction, making them ideal for restoring original equipment authenticity in vintage audio amplifiers, radio receivers, test equipment, and industrial control circuits. Manufactured in the United States, they represent quality construction from an era when component reliability was paramount.
Key Features
- Resistance Value: 680 Ohms
- Power Rating: 0.5 Watts (1/2W)
- Tolerance: ±10%
- Construction: Carbon Composition
- Lead Style: Axial
- Manufacturer: Motorola (USA-made)
- Operating Condition: New in Box
Technical Specifications
Electrical Characteristics:
- Nominal Resistance: 680Ω
- Power Dissipation: 0.5W
- Tolerance: ±10%
- Component Type: Carbon Composition Film
- Termination: Axial Wire Leads
- Condition: New in Box, Vintage Stock
Typical Applications
These vintage resistors are commonly found in and recommended for:
- Vintage Audio Equipment: Tube amplifiers, guitar amplifiers, hi-fi receivers, and vintage preamps where original component matching is essential for tone and performance
- Radio & Communications Equipment: Vintage AM/FM receivers, shortwave radios, and amateur radio equipment
- Industrial Control Circuits: Legacy industrial equipment, process controllers, and test instruments
- Consumer Electronics Repair: Television sets, early transistor radios, and vintage consumer electronics restoration
- Hobbyist & DIY Projects: Vintage-correct rebuilds and restoration projects where original component specifications matter
Compatibility & Replacements
Compatible With
- Vintage tube and transistor-based audio equipment
- Mid-century industrial control systems
- Legacy radio and communications equipment
- Any circuit designed for 680Ω ±10% tolerance resistors
- Breadboarding and prototyping applications
Replaces / Drop-In Replacement For
These resistors function as direct replacements for any circuit specification calling for 680Ω ±10% tolerance carbon composition or film resistors at 0.5W power rating. Verify circuit requirements before ordering to ensure tolerance and power rating match your application.
Works With
- Vintage audio amplifier circuits and designs
- Radio receiver schematics (tube and transistor era)
- Industrial control wiring and panel assembly
- General-purpose electronic repair and restoration projects
- Standard breadboard and printed circuit board applications
