TT Electronics/IRC

GUS-QS0B-03-5490-FA

GUS-QS0B-03-5490-FA Description

The GUS-QS0B-03-5490-FA from TT Electronics/IRC is a high-precision thin-film resistor network designed for demanding surface-mount applications. This 19-resistor array features a compact QSOP-20 package with gull-wing terminations, offering a 549Ω resistance per element at a tight 1% tolerance and a low ±25ppm/°C temperature coefficient. With a 1W total power rating (0.05W per resistor) and an operating temperature range of 70°C to 125°C, this component ensures stable performance in thermally challenging environments. Its 100V maximum voltage rating and thin-film technology provide excellent reliability for precision analog and digital circuits.

GUS-QS0B-03-5490-FA Features

• High-Density Integration: 19 resistors in a 6.02mm × 8.66mm QSOP package, ideal for space-constrained PCB designs.
• Precision Performance: ±1% tolerance and ±25ppm/°C TCR ensure minimal drift in critical applications.
• Robust Construction: Thin-film technology delivers superior stability and low noise compared to thick-film alternatives.
• Automated Assembly Friendly: Gull-wing leads with 0.64mm pitch enable reliable surface-mount soldering.
• Wide Operating Range: Supports -55°C to +125°C (derated power up to 125°C) for industrial and automotive-grade reliability (though not PPAP/automotive-certified).
• Non-RoHS (Not Compliant): Suitable for legacy or exempted applications requiring leaded components.

GUS-QS0B-03-5490-FA Applications

• Signal Conditioning: Precision voltage dividers and pull-up/down networks in data acquisition systems.
• Medical Electronics: Stable reference circuits in patient monitoring equipment.
• Industrial Controls: Robust resistor arrays for PLC I/O modules and sensor interfaces.
• Test & Measurement: Low-drift networks for calibration instruments and high-accuracy multimeters.
• Legacy Systems: Maintenance of non-RoHS-compliant designs in military or aerospace (where exemptions apply).

Conclusion of GUS-QS0B-03-5490-FA

The GUS-QS0B-03-5490-FA excels in applications demanding high density, precision, and thermal stability. Its thin-film construction, tight tolerances, and compact QSOP package make it a superior choice over thicker-film or less stable alternatives. While not automotive-grade, its wide temperature range and 1W power handling suit industrial, medical, and instrumentation designs. Engineers will appreciate its balance of performance and miniaturization, particularly in legacy or exempted systems requiring leaded components.