TT Electronics/IRC

GUS-QS8A-03-4420-DA

GUS-QS8A-03-4420-DA Description

The GUS-QS8A-03-4420-DA from TT Electronics/IRC is a high-precision 8-resistor isolated network designed for demanding surface-mount applications. This thin-film resistor array offers a 442Ω resistance per element with an ultra-tight ±0.5% tolerance and a low ±25ppm/°C temperature coefficient, ensuring stable performance across a wide temperature range (70°C to 125°C). Housed in a 16-pin QSOP package with gull-wing leads, it features a compact footprint (4.9mm × 6.02mm × 1.47mm) and a 0.64mm terminal pitch, making it ideal for high-density PCB designs. With a 0.75W total power rating (0.1W per resistor) and 100V maximum voltage rating, it balances power handling with precision.

GUS-QS8A-03-4420-DA Features

• Isolated Circuit Design (ISOL): Each resistor operates independently, eliminating crosstalk for critical analog/digital isolation.
• Thin-Film Technology: Delivers superior stability, low noise, and precision compared to thick-film alternatives.
• High Power Density: 0.75W total dissipation in a miniature QSOP package, optimizing space and thermal management.
• Automation-Ready: Gull-wing termination ensures reliable solder joints for pick-and-place assembly.
• Extended Temperature Range: Operates reliably up to 125°C, suitable for industrial and automotive-adjacent applications (though not PPAP/AEC-Q200 certified).
• Non-RoHS: May be preferred for legacy or specialized systems requiring leaded components.

GUS-QS8A-03-4420-DA Applications

• Precision Voltage Dividers: Ideal for sensor signal conditioning in medical instrumentation or test equipment.
• Analog Isolation: Isolates channels in data acquisition systems or multiplexers to prevent signal interference.
• Power Management: Used in feedback networks for DC-DC converters or voltage references.
• Industrial Controls: Robust performance suits PLCs, motor drives, and automation systems exposed to thermal stress.
• Legacy Electronics: Non-RoHS compliance makes it a fit for military/aerospace repairs or niche industrial hardware.

Conclusion of GUS-QS8A-03-4420-DA

The GUS-QS8A-03-4420-DA excels in applications demanding high precision, thermal resilience, and compact integration. Its isolated thin-film design, combined with a 0.5% tolerance and low TCR, outperforms generic resistor networks in critical circuits. While not automotive-grade, its 125°C rating and 0.75W power handling make it a versatile choice for industrial, medical, and precision analog designs. The QSOP-16 package ensures compatibility with automated assembly, while the tube packaging protects components during logistics. For engineers prioritizing accuracy and reliability in space-constrained layouts, this network offers a compelling solution.