Overview
The Motorola 6-6031 is a classic carbon composition resistor rated at 100K ohms with 1/2W power dissipation and ±10% tolerance. Built to U.S. manufacturing standards by Motorola, this vintage component is valued by electronics restorers, vintage equipment repair technicians, and collectors seeking authentic period-correct replacements. The axial lead configuration and carbon film construction make it suitable for a wide range of analog and digital circuits where reliable resistance is essential.
Key Features
- Resistance Value: 100,000 ohms (100K Ω)
- Power Rating: 1/2 watt (0.5W)
- Tolerance: ±10%
- Construction: Carbon composition, axial lead
- Manufacturer: Motorola, United States
- Condition: New in box, factory sealed
Technical Specifications
Carbon composition resistors like the Motorola 6-6031 are stable passive components ideal for general-purpose applications. 100K resistors are frequently used in voltage divider networks to scale down voltages for sensing, reference generation, or analog-to-digital converter (ADC) inputs while minimizing current draw. This vintage Motorola unit maintains the reliability and thermal characteristics expected of period electronics.
Typical Applications
- Vintage radio and amplifier restoration
- Classic audio equipment repair
- Retro computer and test equipment servicing
- Period-correct component replacement in hobbyist electronics
- Voltage divider and biasing networks in analog circuits
- Signal conditioning and filtering applications
Compatibility & Replacements
Compatible With
- Vintage Motorola consumer electronics and industrial equipment
- Classic vacuum tube amplifiers and receivers
- 1960s–1970s era analog circuits and control systems
- Any circuit requiring a 100K ohm fixed resistor with ±10% tolerance
Replaces / Drop-In Replacement For
- Motorola 6-6031 (original equivalent)
- Compatible with standard 1/2W, 100K ohm axial resistors of the same era
Works With
- Vintage analog test equipment (oscilloscopes, multimeters, signal generators)
- Classic tube and transistor radio circuits
- Retro computing and microprocessor evaluation boards
- Educational electronics kits and laboratory circuits
- Any breadboard or PCB design requiring a general-purpose 100K ohm resistor





