AMC57MMST Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC57MMST is a 114-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 AMC57MMST 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

AMC57MMST

Sullins Connector SolutionsIn Stock: 854AMC57MMST Datasheet

Current PartRFQ

RMC57MMST

Sullins Connector SolutionsIn Stock: 833RMC57MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC57MMST with the active RMC57MMST is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Identical position count (114 positions across 2 rows)
• Matching pitch specification (0.100" / 2.54mm)
• Equivalent contact finish (gold plating at 30.0µin thickness)
• Identical operating temperature range (-65°C ~ 200°C)
• Same termination method (solder)

Mechanical Compatibility:

• Identical gender (male) and card type interface (fits female edgecards)
• Matching dual read-out configuration
• Identical flange features (flush mount, top opening, threaded insert 4-40)
• Same insulation material (Polyphenylene Sulfide)

Regulatory Compliance:

• Both parts maintain ROHS3 compliance
• Both parts classified as REACH Unaffected
• Moisture sensitivity level identical (MSL 1)

The RMC57MMST represents the direct active successor to the AMC57MMST within the Sullins Connector Solutions product line, with the primary distinction being contact material composition (phosphor bronze versus beryllium copper) and the addition of specified card thickness and color designation.

Parameter Comparison

Engineering Selection Recommendations

The RMC57MMST is the appropriate substitute for the obsolete AMC57MMST based on the following engineering criteria:

Product Status Alignment: The RMC57MMST maintains active product status with current manufacturing and inventory availability (769 pcs in stock), eliminating supply chain risk associated with the obsolete AMC57MMST.

Electrical and Mechanical Equivalence: Both connectors satisfy identical electrical specifications across all critical parameters including position count, pitch, operating temperature range, and contact finish thickness. Mechanical interface compatibility is maintained through identical flange configuration and mounting specifications.

Regulatory Compliance: Both parts maintain equivalent compliance certifications (ROHS3, REACH Unaffected, MSL 1), ensuring no regulatory barriers to substitution in existing applications.

Contact Material Consideration: The RMC57MMST employs phosphor bronze contacts in place of beryllium copper. Both materials provide equivalent electrical conductivity and durability within the specified operating parameters and are standard alternatives within card edge connector design.

Mounting Type Specification: The RMC57MMST specifies through-hole mounting, consistent with solder termination methodology and standard PCB assembly practices for this connector category.

Frequently Asked Questions (FAQ)

Q: Are the AMC57MMST and RMC57MMST electrically interchangeable?

A: Yes. Both connectors maintain identical electrical specifications including 114-position configuration, 0.100" pitch, dual read-out, gold contact finish at 30.0µin thickness, and -65°C to 200°C operating range. Electrical performance is equivalent across all specified parameters.

Q: What is the primary difference between these two connectors?

A: The primary differences are product status (obsolete versus active) and contact material composition. The AMC57MMST uses beryllium copper contacts while the RMC57MMST uses phosphor bronze contacts. Both materials are functionally equivalent for this application. The RMC57MMST also specifies card thickness (0.062") and includes color designation (black).

Q: Can the RMC57MMST be used as a direct replacement in existing designs?

A: Yes. The RMC57MMST is mechanically and electrically compatible with the AMC57MMST. Identical flange features, mounting configuration, and interface specifications ensure direct substitution in existing PCB layouts and assemblies.

Q: Are there any compliance or certification differences?

A: No. Both connectors maintain identical compliance status: ROHS3 compliant, REACH unaffected, and MSL 1 (unlimited moisture sensitivity level). No additional qualification is required from a regulatory standpoint.

Q: What is the significance of the card thickness specification on the RMC57MMST?

A: The RMC57MMST specifies 0.062" (1.57mm) card thickness, which defines the mechanical interface with female edgecards. This specification ensures proper contact engagement and is standard for this connector category.

Q: Why is the AMC57MMST classified as obsolete?

A: Obsolete status indicates the part is no longer in active production. The RMC57MMST represents the current active equivalent within the Sullins Connector Solutions product line, ensuring ongoing availability and manufacturing support.

Q: Are there any thermal or environmental performance differences?

A: No. Both connectors operate across the identical temperature range (-65°C to 200°C) and maintain equivalent environmental performance through identical insulation material (Polyphenylene Sulfide) and moisture sensitivity classification (MSL 1).