AMC51MMST Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC51MMST is a 102-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 part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

AMC51MMST

Sullins Connector SolutionsIn Stock: 919AMC51MMST Datasheet

Current PartRFQ

RMC51MMST

Sullins Connector SolutionsIn Stock: 1024RMC51MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC51MMST with the active RMC51MMST is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Identical position count (102 positions)
• Identical pitch specification (0.100" / 2.54mm)
• Identical dual read-out configuration
• Identical gold contact finish and thickness (30.0µin / 0.76µm)
• Identical operating temperature range (-65°C ~ 200°C)
• Identical termination method (solder)

Mechanical Compatibility:

• Identical gender (male)
• Identical number of rows (2)
• Identical card type interface (fits female edgecards)
• Identical insulation material (Polyphenylene Sulfide / PPS)
• Identical flange feature specification (flush mount, top opening, threaded insert, 4-40)

Compliance Equivalence:

• Both parts maintain ROHS3 compliance
• Both parts maintain MSL 1 (unlimited) rating
• Both parts maintain REACH unaffected status

The RMC51MMST represents a direct functional equivalent with active product status, ensuring continued availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The RMC51MMST is the direct substitute for the obsolete AMC51MMST based on the following engineering criteria:

Product Status Alignment: The RMC51MMST maintains active product status with confirmed inventory availability (1001 pcs), ensuring reliable procurement for current and future applications. The AMC51MMST obsolete status creates supply chain risk for new designs and field service requirements.

Regulatory Compliance: Both parts maintain identical ROHS3 compliance certification and REACH unaffected status, satisfying current environmental and regulatory requirements without design modification.

Electrical and Mechanical Equivalence: The RMC51MMST provides identical electrical performance across all critical parameters including position count, pitch, contact finish specification, and operating temperature range. Mechanical compatibility is maintained through identical flange features, mounting configuration, and insulation material.

Contact Material Difference: The RMC51MMST employs phosphor bronze contacts in place of beryllium copper. Both materials provide equivalent electrical conductivity and reliability performance within the specified operating parameters and are standard alternatives in card edge connector design.

Moisture and Temperature Performance: Both parts maintain MSL 1 (unlimited) rating and identical operating temperature range (-65°C ~ 200°C), confirming equivalent performance in environmental stress conditions.

Frequently Asked Questions (FAQ)

Q: Can the RMC51MMST directly replace the AMC51MMST in existing designs?

A: Yes. The RMC51MMST provides direct functional equivalence across all critical electrical and mechanical parameters. Both connectors feature 102 positions, 0.100" pitch, dual read-out configuration, identical flange mounting, and equivalent operating temperature range. No design modification is required.

Q: What is the difference between beryllium copper and phosphor bronze contacts?

A: Both materials are standard contact materials for card edge connectors and provide equivalent electrical conductivity and reliability performance. The phosphor bronze contacts in the RMC51MMST deliver the same contact finish specification (30.0µin gold plating) and operating characteristics as the beryllium copper contacts in the AMC51MMST.

Q: Are there any compatibility issues with female edgecards?

A: No. Both the AMC51MMST and RMC51MMST are designed to interface with female edgecards at 0.100" (2.54mm) pitch. The identical card type specification and mechanical dimensions ensure full compatibility with existing female edgecard designs.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the AMC51MMST and RMC51MMST maintain ROHS3 compliance and REACH unaffected status. Both parts carry MSL 1 (unlimited) moisture sensitivity rating, confirming equivalent compliance with current environmental and regulatory standards.

Q: What is the significance of the product status difference?

A: The AMC51MMST is classified as obsolete, indicating discontinued manufacturing and limited inventory availability. The RMC51MMST maintains active product status with confirmed current inventory, ensuring reliable supply chain support for new production and field service applications.

Q: Are the solder termination specifications identical?

A: Yes. Both connectors employ solder termination and maintain identical insulation material (Polyphenylene Sulfide / PPS) and flange configuration (flush mount, top opening, threaded insert, 4-40), ensuring equivalent soldering performance and PCB integration.

Q: What is the operating temperature range for both connectors?

A: Both the AMC51MMST and RMC51MMST operate across -65°C to 200°C, providing identical thermal performance across industrial and high-temperature applications.