AMC55MMSD Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC55MMSD is a 110-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 with gold-plated beryllium copper contacts and operates across -65°C to 200°C. The AMC55MMSD is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements.

Substiute Parts

AMC55MMSD

Sullins Connector SolutionsIn Stock: 1107AMC55MMSD Datasheet

Current PartRFQ

RMC55MMSD

Sullins Connector SolutionsIn Stock: 1130RMC55MMSD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC55MMSD with the active RMC55MMSD is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Identical position count (110 positions, 55 per row, 2 rows)
• Matching pitch specification (0.100" / 2.54mm)
• Identical gender configuration (Male)
• Matching read-out configuration (Dual)
• Equivalent contact finish specification (Gold, 30.0µin thickness)
• Identical termination method (Solder)
• Matching operating temperature range (-65°C ~ 200°C)
• Identical insulation material (Polyphenylene Sulfide)

Mechanical Compatibility:

• Matching flange feature dimensions (0.125" diameter)
• Flush mount configuration maintained
• Unthreaded flange specification preserved

Compliance Equivalence:

• Both parts maintain ROHS3 compliance
• Both parts classified as MSL 1 (Unlimited)
• Both parts REACH Unaffected

The RMC55MMSD represents a direct functional equivalent suitable for replacement in applications previously utilizing the AMC55MMSD.

Parameter Comparison

Engineering Selection Recommendations

The RMC55MMSD is the direct active equivalent for the obsolete AMC55MMSD. Selection of the RMC55MMSD is supported by the following factors:

Product Status: The RMC55MMSD maintains active production status with current inventory availability (1046 pcs), whereas the AMC55MMSD is classified as obsolete. For new designs and ongoing production, the RMC55MMSD ensures supply chain continuity and long-term component availability.

Compliance Certification: Both connectors maintain identical ROHS3 compliance and MSL 1 (Unlimited) ratings, ensuring regulatory equivalence for applications subject to environmental and reliability standards.

Electrical and Mechanical Specifications: The RMC55MMSD preserves all critical electrical parameters including position count, pitch, gender, read-out configuration, contact finish specification, termination method, and operating temperature range. Mechanical compatibility is maintained through identical flange dimensions and flush mount configuration.

Contact Material Difference: The RMC55MMSD utilizes phosphor bronze contacts in place of beryllium copper. Both materials are standard in card edge connector applications and maintain equivalent electrical performance at the specified contact finish thickness (30.0µin gold plating).

Flange Opening Direction: The RMC55MMSD features top opening configuration compared to the side opening of the AMC55MMSD. This difference requires verification of mechanical clearance in the target application assembly.

Mounting Configuration: The RMC55MMSD specifies through-hole mounting, which is standard for solder-terminated card edge connectors and compatible with conventional PCB assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the RMC55MMSD directly replace the AMC55MMSD in existing assemblies?

A: The RMC55MMSD is electrically and mechanically compatible with the AMC55MMSD across all critical parameters including position count, pitch, gender, read-out configuration, contact finish, termination method, and operating temperature range. Physical clearance verification is required due to the difference in flange opening direction (top opening vs. side opening).

Q: What is the significance of the contact material difference between beryllium copper and phosphor bronze?

A: Both beryllium copper and phosphor bronze are established contact materials in card edge connector applications. The RMC55MMSD phosphor bronze contacts with 30.0µin gold plating provide equivalent electrical performance and reliability for the specified operating conditions.

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

A: Both the AMC55MMSD and RMC55MMSD maintain identical ROHS3 compliance and MSL 1 (Unlimited) ratings. No compliance differences exist between the two connectors.

Q: Why is the AMC55MMSD classified as obsolete?

A: The AMC55MMSD is obsolete due to product lifecycle management by Sullins Connector Solutions. The RMC55MMSD represents the current production equivalent and is recommended for all new designs and ongoing production requirements.

Q: What is the difference between side opening and top opening flange configurations?

A: Side opening and top opening refer to the direction of card insertion relative to the connector flange. Side opening allows card insertion from the side, while top opening allows insertion from the top. The specific configuration required depends on the mechanical design of the target application and PCB layout.

Q: Is the black color of the RMC55MMSD a functional difference?

A: The black color of the RMC55MMSD is a cosmetic specification and does not affect electrical or mechanical function. Color selection is typically driven by application aesthetics or internal company standards.

Q: What is the through-hole mounting specification of the RMC55MMSD?

A: Through-hole mounting indicates that the connector is designed for insertion into plated holes on a printed circuit board, followed by solder reflow. This is the standard mounting method for solder-terminated card edge connectors.