TT Electronics/IRC

GUS-QS8A-02-4991-BA

GUS-QS8A-02-4991-BA Description

The GUS-QS8A-02-4991-BA from TT Electronics/IRC is a high-precision thin-film resistor network designed for demanding applications requiring tight tolerances and stable performance. This 8-resistor isolated network features a 4.99KΩ resistance value per resistor with an exceptional 0.1% tolerance and a low ±50ppm/°C temperature coefficient, ensuring minimal drift across operating conditions. Housed in a compact 16-pin QSOP package with gull-wing SMD termination, it offers a 0.75W (3/4W) total power rating (0.1W per resistor) and operates reliably within a -55°C to +125°C range, derated from 70°C to 125°C. Its 100V maximum voltage rating and thin-film technology provide superior accuracy and longevity in precision circuits.

GUS-QS8A-02-4991-BA Features

• High Precision: 0.1% tolerance and ±50ppm/°C TCR for stable performance in critical applications.
• Robust Construction: Thin-film technology ensures low noise, high reliability, and long-term stability.
• Compact Design: 4.9mm (L) x 6.02mm (D) x 1.47mm (H) QSOP package saves board space in dense layouts.
• Isolated Configuration: Eight independent resistors (ISOL circuit designator) for flexible circuit design.
• Wide Operating Range: Supports -55°C to +125°C, with derated power up to 125°C.
• Automotive-Grade Alternatives: While this model is not PPAP or automotive-qualified, similar variants may meet stricter requirements.

GUS-QS8A-02-4991-BA Applications

Ideal for precision analog and digital systems, including:

• Medical Devices: Patient monitoring equipment, where accuracy is critical.
• Test & Measurement: High-resolution data acquisition systems and calibration instruments.
• Industrial Controls: PLCs, sensor interfaces, and feedback loops requiring stable resistance.
• Communications: RF and signal conditioning circuits in base stations and transceivers.
• Aerospace & Defense: Avionics and radar systems demanding low drift over temperature.

Conclusion of GUS-QS8A-02-4991-BA

The GUS-QS8A-02-4991-BA excels in applications requiring high precision, compactness, and thermal stability. Its thin-film isolation network, combined with tight tolerances and a robust package, makes it a superior choice over thicker-film or less stable alternatives. While not RoHS-compliant, its performance in harsh environments and precision-critical roles justifies its use in specialized industrial, medical, and communications systems. Engineers seeking reliability in space-constrained designs will find this resistor network an optimal solution.