CTS Corporation

RT1402B7

RT1402B7 Description

The RT1402B7 from CTS Corporation is a high-performance 18-resistor network designed for DDR SDRAM applications. This surface-mount (SMD) BGA component features a compact footprint of 9.00mm x 3.00mm (0.354" x 0.118") with a low-profile height of 1.34mm (0.053"), making it ideal for space-constrained PCB designs. As part of the ClearONE™ series, it offers a dual-terminator circuit configuration with a 50Ω resistance per element and a tight ±1% tolerance, ensuring reliable signal integrity in high-speed memory systems. The ±200ppm/°C temperature coefficient and 50mW power rating per resistor provide stable performance across varying operating conditions.

RT1402B7 Features

• 18-resistor array in a 27-pin BGA package, optimized for DDR memory termination.
• Precision ±1% tolerance and low TCR (±200ppm/°C) for consistent performance.
• Compact SMD design (9.00mm x 3.00mm) with 1.34mm height, suitable for high-density layouts.
• Dual-terminator circuit reduces signal reflection and improves data integrity.
• 50mW power dissipation per resistor ensures reliability under load.
• Moisture Sensitivity Level (MSL) 1, allowing unlimited floor life before reflow.

RT1402B7 Applications

• DDR SDRAM termination networks in servers, workstations, and high-performance computing.
• Signal integrity solutions for high-speed memory buses and data lines.
• Embedded systems requiring compact, high-accuracy resistor networks.
• Industrial and automotive electronics where stable resistance under thermal stress is critical.

Conclusion of RT1402B7

The RT1402B7 stands out as a high-reliability resistor network for DDR memory applications, combining precision, compactness, and thermal stability. Its dual-terminator design and low-profile BGA package make it a superior choice over bulkier or less precise alternatives. While marked obsolete, it remains a proven solution for legacy or long-lifecycle designs requiring robust termination networks. Engineers should evaluate replacement options from CTS's active lineup for new designs while considering this model for maintenance or legacy support.