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4309R-101-121

4309R-101-121 Description

The 4309R-101-121 from Bourns Inc. is an 8-resistor bussed network array housed in a compact 9-pin SIP (Single In-Line Package). Designed for through-hole mounting, it features a resistance value of 120Ω per element with a tight tolerance of ±2%, ensuring consistent performance in precision circuits. The array operates within a ±100ppm/°C temperature coefficient, with a resistor-ratio drift of 50ppm/°C, making it stable across varying thermal conditions. Its 200mW power rating per element and REACH-compliant construction cater to industrial and commercial applications requiring reliability and environmental compliance.

4309R-101-121 Features

• High-Density Integration: Combines 8 resistors in a space-saving 0.884" x 0.085" (22.45mm x 2.16mm) footprint, ideal for PCB-constrained designs.
• Robust Performance: Bussed circuit topology simplifies layout, while the ±2% tolerance and low TCR ensure accuracy in signal conditioning and voltage division.
• Durability: Moisture Sensitivity Level (MSL): Not Applicable eliminates baking requirements, streamlining assembly.
• Wide Compatibility: EAR99/ECCN classification facilitates global sourcing, and the tube packaging protects components during handling.

4309R-101-121 Applications

This resistor network excels in:

• Analog Signal Processing: Precision dividers and pull-up/down networks in op-amp circuits.
• Industrial Controls: PLCs and sensor interfaces where stable resistance ratios are critical.
• Consumer Electronics: Durable, cost-effective solution for audio equipment and power management.
• Automotive Systems: Engine control units (ECUs) benefiting from its -55°C to +125°C operational range.

Conclusion of 4309R-101-121

The 4309R-101-121 stands out for its balance of precision, compactness, and reliability, backed by Bourns' quality. Its bussed configuration, low drift, and industrial-grade robustness make it a superior choice over discrete resistors in space-sensitive, high-volume applications. Engineers will appreciate its ease of integration and compliance with stringent environmental standards, ensuring long-term performance in demanding circuits.