CR1206-FX-1271ELF – BOURNS

Overview

The Bourns CR1206-FX-1271ELF is a precision thick-film surface-mount resistor designed for general-purpose current limiting and voltage division in compact electronic assemblies. Its critical operational characteristic is the tight 1% resistance tolerance, ensuring predictable circuit behavior. A key design consideration for engineers is managing the thermal derating curve; while rated at 0.25W, sustained operation near its maximum power dissipation will significantly impact long-term stability and potentially exceed the ±100ppm/°C temperature coefficient, necessitating careful heat sinking or operation at reduced power levels.

Key Features

• Resistance: 1.27 kOhms
• Tolerance: ±1%
• Power Rating: 0.25W (1/4W)
• Composition: Thick Film, Moisture Resistant
• Temperature Coefficient: ±100ppm/°C
• Package: 1206 (3.20mm x 1.60mm x 0.75mm)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Signal conditioning in sensor interfaces
• Bias networks for active components
• Current sensing in low-power DC-DC converters
• Pull-up/pull-down resistors in digital logic circuits