CTS Corporation

RT1401B

RT1401B Description

The RT1401B from CTS Corporation is a high-performance 18-resistor network designed for DDR SDRAM termination applications. This surface-mount (SMD) BGA component features a compact 0.354" × 0.118" (9.00mm × 3.00mm) footprint with a low-profile 1.34mm height, making it ideal for space-constrained PCB designs. As part of the ClearONE™ series, it offers dual-termination functionality with ±1% tolerance and a ±200ppm/°C temperature coefficient, ensuring stable performance across varying operating conditions. With a 50mW power rating per element and 27-pin configuration, it provides reliable signal integrity in high-speed memory systems.

RT1401B Features

• Precision Resistance: 22Ω and 25Ω values with ±1% tolerance for accurate termination.
• Thermal Stability: ±200ppm/°C coefficient minimizes resistance drift under temperature fluctuations.
• Compact Design: Ultra-low 1.34mm profile and 9.00mm × 3.00mm dimensions suit high-density layouts.
• DDR-Optimized: Dual-termination circuit tailored for DDR SDRAM applications.
• Robust Construction: MSL 1 (Unlimited) moisture sensitivity ensures reliability in humid environments.
• Obsolete Status: While no longer in production, it remains a proven solution for legacy designs.

RT1401B Applications

• Memory Modules: Primary use in DDR SDRAM termination to reduce signal reflections and improve data integrity.
• High-Speed PCBs: Ideal for server motherboards, graphics cards, and embedded systems requiring precise impedance matching.
• Legacy Upgrades: Suitable for maintaining or repairing older electronics where modern equivalents may not be compatible.

Conclusion of RT1401B

The RT1401B resistor network excels in high-speed memory applications with its precision, thermal resilience, and compact form factor. Though obsolete, its ClearONE™ technology and BGA packaging make it a dependable choice for engineers managing legacy DDR-based systems or seeking proven termination solutions. For new designs, consult CTS Corporation for modern alternatives with similar performance characteristics.