RMA40DTMI

Edgeboard Connectors Overview

The RMA40DTMI is a dual-edge female card edge connector manufactured by Sullins Connector Solutions. It features 80 positions arranged in two rows of 40 contacts each, with a pitch of 0.125 inches (3.18 mm). Designed for through-hole right-angle mounting and solder termination, the connector utilizes phosphor bronze loop bellows contacts with a gold finish thickness of 30.0 µin (0.76 µm). The insulator is constructed from polyphenylene sulfide (PPS), supporting a card thickness of 0.062 inches (1.57 mm). Operating temperature ranges from -65°C to 125°C, and it complies with RoHS3 standards.

Edgeboard Connectors Feature Summary

• Dual-edge female configuration with loop bellows contact type for reliable board-to-board connections
• Gold-plated phosphor bronze contacts ensure durability and low contact resistance
• Polyphenylene sulfide (PPS) insulator material provides thermal stability and flame resistance
• Right-angle through-hole mounting design facilitates standard PCB integration

Edgeboard Connectors Applications

• Industrial control systems requiring robust card edge interfaces
• Telecommunications equipment utilizing standardized edgeboard modules
• Test and measurement instrumentation boards
• General-purpose electronic assemblies needing dual-edge connectivity

Edgeboard Connectors Procurement Notes

Verify the specific suffix code against official Sullins documentation to confirm flange characteristics and insulation material. Ensure the procurement specification matches the required 0.125-inch pitch and PPS insulator type. Confirm compliance requirements such as RoHS3 status align with project regulations before finalizing orders.

Edgeboard Connectors Selection Notes

Select this component when a dual-edge female connector with a 0.125-inch pitch is required for through-hole applications. Consider the PPS insulator material for high-temperature environments exceeding typical PBT limits. Verify that the 0.062-inch card thickness compatibility matches the target PCB design constraints and mechanical clearance requirements.

Edgeboard Connectors Part Context

This part belongs to the RMA40 series of card edge connectors from Sullins Connector Solutions. The series offers various configurations differing by pitch, insulator material, and flange options. The RMA40DTMI specifically denotes the 0.125-inch pitch variant with PPS insulation, distinguishing it from other series members like ESM or RBM which may use different materials or pitches.

Edgeboard Connectors Replacement Considerations

Direct substitutes include RMA40DTAS and RMA40DTKI, which share identical electrical specifications and 0.125-inch pitch. Differences exist primarily in flange mounting features; RMA40DTAS offers side-mount openings while RMA40DTKI specifies top-mount openings. Verify mechanical fitment before substitution.