TT Electronics/IRC

GUS-QS8B-03-4990-C

GUS-QS8B-03-4990-C Description

The GUS-QS8B-03-4990-C from TT Electronics/IRC is a high-precision thin-film resistor network designed for demanding surface-mount applications. This 16-pin QSOP package integrates 15 resistors, each with a 499Ω resistance value and an ultra-tight 0.25% tolerance, ensuring exceptional accuracy in signal conditioning and voltage division circuits. With a ±25ppm/°C temperature coefficient, it delivers stable performance across a wide temperature range (70°C to 125°C derated, 125°C max). The network supports a maximum voltage rating of 100V and offers a total power rating of 0.75W (3/4W), distributed as 0.05W (1/20W) per resistor. Its gull-wing termination and compact dimensions (4.9mm x 6.02mm x 1.47mm) make it ideal for space-constrained PCB designs.

GUS-QS8B-03-4990-C Features

• Precision Thin Film Technology: Delivers low noise and high stability for critical analog circuits.
• High Power Density: 0.75W total power in a miniaturized QSOP package, outperforming similar networks in thermal management.
• Tight Tolerance & Low TCR: 0.25% tolerance and ±25ppm/°C ensure minimal drift in harsh environments.
• Robust Construction: Rectangular QSOP case with ±0.1mm height/length tolerances for consistent mounting.
• Automotive-Grade Alternatives: While not PPAP or Automotive qualified, its 125°C operating temp suits industrial and telecom applications.
• Non-RoHS Compliance: Suitable for legacy or exempted designs requiring leaded finishes.

GUS-QS8B-03-4990-C Applications

• Signal Processing: Precision dividers in ADC/DAC reference circuits.
• Medical Equipment: Stable biasing in diagnostic instruments where accuracy is critical.
• Industrial Controls: Feedback networks in PLCs and motor drivers.
• Telecom Infrastructure: Impedance matching in high-frequency RF modules.
• Test & Measurement: Calibration circuits requiring long-term stability.

Conclusion of GUS-QS8B-03-4990-C

The GUS-QS8B-03-4990-C excels in applications demanding high precision, compactness, and thermal resilience. Its thin-film technology, gull-wing SMD design, and rigorous tolerances make it a superior choice over thicker-film or less stable networks. While not suited for automotive use, it bridges the gap between industrial reliability and laboratory-grade accuracy. Engineers will value its balance of power handling, size, and performance in mission-critical electronics.