4308R-101-470 – BOURNS

Overview

The Bourns 4308R-101-470 is a high-density 7-element bussed resistor network designed for precise signal conditioning and impedance matching in demanding electronic systems. Its critical operational characteristic lies in its tight ±1 Ohm resistance tolerance and 200mW power rating per element, ensuring consistent performance. A key design consideration when utilizing such arrays is managing thermal dissipation; while each element is rated for 200mW, the cumulative power dissipation within the 8-SIP package can necessitate careful PCB layout and airflow analysis to prevent exceeding the overall thermal budget and compromising long-term reliability.

Key Features

• Resistance: 47 Ohms ±1 Ohm
• Power Per Element: 200mW
• Temperature Coefficient: ±250ppm/°C
• Number of Resistors: 7 (Bussed configuration)
• Operating Temperature Range: -55°C to 125°C
• Package: 8-SIP (0.784″ L x 0.085″ W x 0.195″ H)

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.

• High-speed digital signal termination in FPGA I/O buffers
• Precision current sensing in multi-channel analog front-ends
• Impedance matching for data bus lines in embedded systems
• Pull-up/pull-down resistor arrays for microcontroller interfaces