Overview
The Motorola 6-5577 is a classic carbon composition axial resistor rated at 2.7kΩ with ±10% tolerance and 1/2 watt power dissipation. Part of Motorola’s legacy resistor line, this component is ideal for restoration and repair of vintage electronic equipment, ham radio gear, and classic amplifier restoration projects where original-specification replacement is required. Carbon composition resistors are prized in analog audio applications for their warm sound characteristics and low noise properties.
Key Features
- Resistance Value: 2.7kΩ with ±10% tolerance
- Power Rating: 0.5 watts (1/2W)
- Construction: Carbon composition with axial leads
- Vintage Design: Original Motorola manufacturing for authentic restoration
- Lead Configuration: Axial through-hole mount
- Condition: New in box, factory sealed
Technical Specifications
- Resistance: 2.7kΩ
- Tolerance: ±10%
- Power Rating: 0.5W
- Component Type: Carbon Composition
- Lead Type: Axial
- Package: Individual unit
- Mounting: Through-hole PCB
- Temperature Range: -55°C to +125°C (typical for carbon composition)
- Maximum Voltage: 350V (typical for 1/2W resistors)
Typical Applications
- Vintage tube amplifier restoration and bias circuit trimming
- Classic audio equipment repair (preamps, mixers, effect units)
- Ham radio receiver and transmitter circuits
- Vintage synthesizer restoration and modification
- Legacy industrial control systems and analog meters
- Collector-grade restoration of 1960s–1980s consumer electronics
Compatibility & Replacements
Compatible With
- Vintage tube and solid-state amplifier circuits
- Legacy analog audio processing equipment
- Classic electronic test and measurement instruments
- Any circuit designed for standard 1/4-inch axial resistors
- Universal through-hole PCB designs with 0.1-inch pitch
Replaces / Drop-In Replacement For
- Original Motorola 6-5577 (exact equivalent)
- Generic 2.7kΩ ±10% 1/2W carbon composition resistors in vintage equipment
- OEM-specification resistor positions in 1960s–1980s Motorola-manufactured consumer electronics
Works With
- Vintage PCB designs requiring original component specifications
- Analog circuit applications from microhertz to low megahertz frequencies
- Audio and RF circuits where carbon composition noise characteristics are acceptable
- Standard soldering techniques (through-hole component)
- Vintage amplifier biasing and trimming applications
