Overview
The Allen-Bradley 131-627 carbon composition resistor is a bulk package containing 450 individual 270kΩ resistors. This carbon composition resistor delivers proven reliability in industrial controls, test equipment, and legacy circuit repairs. The ±5% tolerance meets standard electronics manufacturing specifications, making it suitable for general-purpose analog and digital circuitry where precision resistive values are required.
Key Features
- Resistance value: 270kΩ with ±5% tolerance
- Carbon composition construction for stable performance across temperature ranges
- Axial lead design for through-hole PCB mounting
- 1/4 watt power rating typical for carbon composition construction
- Bulk box of 450 units—economical for production runs and maintenance stockpiles
- Factory new, sealed package ensures reliable long-term storage
Technical Specifications
- Resistance: 270 kΩ
- Tolerance: ±5%
- Power Rating: 1/4 W (0.25 W)
- Temperature Coefficient: Typical ±1000 ppm/°C (standard for carbon composition)
- Operating Temperature Range: −55°C to +70°C
- Lead Style: Axial
- Package Quantity: 450 units per box
- Condition: New in Box
- Color Code: Red-Violet-Yellow-Gold
Typical Applications
- Industrial PLC and control module repairs
- Audio amplifier and instrument circuitry
- Electronic test and measurement equipment
- Legacy industrial electronics restoration
- Pull-down and pull-up networks in digital logic circuits
- Production assembly stockpiles for OEM manufacturing
Compatibility & Replacements
The 131-627 is a standard carbon composition resistor compatible with any circuit design calling for a 270kΩ ±5% resistor in a through-hole format. While Allen-Bradley no longer manufactures carbon composition resistors, exact replacements include equivalent 270kΩ ±5% resistors from Stackpole or Vishay in standard 1/4W axial-lead form. Modern thin-film or metal-film resistors offering tighter tolerance (±1%) may substitute in non-critical circuits but should be verified for impedance stability in RF or precision analog applications.
