AMC31MMSD Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC31MMSD is a 62-position male card edge connector manufactured by Sullins Connector Solutions, designed to interface with female edgecards at 0.100" (2.54mm) pitch. This connector features dual read-out configuration, gold-plated beryllium copper contacts, and operates across -65°C to 200°C. The AMC31MMSD is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure ongoing component availability for production and field service applications.

Substiute Parts

AMC31MMSD

Sullins Connector SolutionsIn Stock: 834AMC31MMSD Datasheet

Current PartRFQ

RMC31MMSD

Sullins Connector SolutionsIn Stock: 777RMC31MMSD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The RMC31MMSD qualifies as a direct substitute for the AMC31MMSD based on the following critical parameters that determine functional compatibility:

Matching Parameters:

• 62-position configuration with dual read-out
• Male gender for female edgecard interface
• 0.100" (2.54mm) pitch spacing
• 2-row arrangement
• Solder termination
• Gold contact finish at 30.0µin (0.76µm) thickness
• Operating temperature range of -65°C ~ 200°C
• Polyphenylene Sulfide (PPS) insulation material
• Flush mount flange with 0.125" (3.18mm) diameter
• ROHS3 compliance and MSL 1 rating

Differing Parameters:

• Contact material: Beryllium Copper (AMC31MMSD) versus Phosphor Bronze (RMC31MMSD)
• Flange opening orientation: Side Opening (AMC31MMSD) versus Top Opening (RMC31MMSD)
• Connector color: Not specified (AMC31MMSD) versus Black (RMC31MMSD)
• Card thickness specification: Not specified (AMC31MMSD) versus 0.062" (1.57mm) (RMC31MMSD)
• Mounting type: Not specified (AMC31MMSD) versus Through Hole (RMC31MMSD)
• Product status: Obsolete (AMC31MMSD) versus Active (RMC31MMSD)

The RMC31MMSD maintains electrical and mechanical compatibility through identical pitch, position count, termination method, contact finish specification, and operating parameters. The phosphor bronze contact material and alternative flange opening design do not compromise functional performance in standard edgecard applications.

Parameter Comparison

Engineering Selection Recommendations

The RMC31MMSD is the appropriate substitute for the obsolete AMC31MMSD in new designs and ongoing production applications. The substitute part maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment with current environmental standards. Both connectors share identical electrical specifications including contact finish thickness, operating temperature range, and insulation material properties.

The transition from the AMC31MMSD to the RMC31MMSD is supported by the active product status of the substitute, ensuring long-term component availability and supply chain continuity. The RMC31MMSD is currently stocked with 690 pieces in inventory, providing immediate availability for procurement.

The phosphor bronze contact material in the RMC31MMSD provides equivalent performance to the beryllium copper contacts in the AMC31MMSD for standard edgecard interface applications. Both materials achieve the specified gold plating thickness and maintain contact reliability across the full operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the RMC31MMSD directly replace the AMC31MMSD in existing assemblies?

A: The RMC31MMSD is electrically and mechanically compatible with the AMC31MMSD for edgecard interface applications. Both connectors maintain identical pitch spacing (0.100"), position count (62), row configuration (2), and contact finish specifications. Physical board layout verification is required to confirm compatibility with the flange opening orientation difference (side opening versus top opening).

Q: What is the significance of the contact material difference between these connectors?

A: The AMC31MMSD uses beryllium copper contacts while the RMC31MMSD uses phosphor bronze contacts. Both materials are suitable for gold-plated contact applications and provide equivalent electrical performance and contact reliability at the specified gold plating thickness of 30.0µin (0.76µm).

Q: Are there any compliance or regulatory differences between these parts?

A: Both the AMC31MMSD and RMC31MMSD are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution. The RMC31MMSD carries an ECCN classification of EAR99 and HTSUS code 8536.69.4040.

Q: What does the flange opening orientation difference mean for installation?

A: The AMC31MMSD features side opening flange design while the RMC31MMSD features top opening flange design. This difference affects the physical approach angle during connector insertion and board layout considerations. Verify that the PCB design accommodates the top opening orientation of the RMC31MMSD.

Q: Is the card thickness specification critical for compatibility?

A: The RMC31MMSD specifies a card thickness of 0.062" (1.57mm). This parameter should be verified against your edgecard thickness to ensure proper contact engagement and mechanical fit.

Q: What is the moisture sensitivity level and why does it matter?

A: Both connectors carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. These connectors can be stored and handled without special moisture control measures, simplifying inventory management and logistics.