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770101221

770101221 Description

The 770101221 from CTS Resistor Products (a division of CTS Corporation) is a 9-resistor bussed network designed for through-hole mounting. This obsolete but REACH-unaffected component features a compact 1.000" x 0.098" (25.40mm x 2.50mm) footprint with a 10-pin SIP configuration, offering a 220Ω resistance per element at ±2% tolerance. Its ±100ppm/°C temperature coefficient ensures stable performance across varying thermal conditions, while the 100mW power rating per resistor balances efficiency and durability. The ROHS3-compliant construction adheres to modern environmental standards, and its non-MSLA (Not Applicable) status simplifies handling in non-moisture-sensitive environments.

770101221 Features

• Bussed Circuit Topology: Simplifies PCB layout by sharing a common node, reducing wiring complexity.
• High-Density Packaging: 9 resistors integrated into a single 10-pin SIP package save board space versus discrete resistors.
• Stable Performance: ±100ppm/°C TCR minimizes resistance drift in temperature-fluctuating applications.
• Robust Construction: Through-hole mounting ensures mechanical reliability in high-vibration environments.
• Compliance: ROHS3, REACH Unaffected, and EAR99/ECCN certifications facilitate global sourcing and deployment.

770101221 Applications

Ideal for legacy or cost-sensitive designs requiring bulk packaging, the 770101221 excels in:

• Industrial Control Systems: Signal conditioning and pull-up/pull-down networks in PLCs.
• Consumer Electronics: Voltage division in older audio/video equipment.
• Automotive Electronics: Redundant circuits where bussed networks reduce part counts.
• Test & Measurement Equipment: Calibration networks benefiting from ±2% tolerance.

Conclusion of 770101221

While marked obsolete, the 770101221 remains a pragmatic choice for space-constrained, through-hole designs demanding stable, bussed resistance networks. Its 100mW power handling, tight tolerance, and robust SIP package make it suitable for industrial, automotive, and legacy electronics. Engineers valuing simplified assembly and thermal resilience may still leverage this component in non-lead-free-critical applications. For modern alternatives, consider CTS's active resistor array series with enhanced features.