AMC39MMSD Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC39MMSD is a 78-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 AMC39MMSD is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

AMC39MMSD

Sullins Connector SolutionsIn Stock: 956AMC39MMSD Datasheet

Current PartRFQ

RMC39MMSD

Sullins Connector SolutionsIn Stock: 1064RMC39MMSD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC39MMSD with the active RMC39MMSD is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Identical position count (78 positions)
• Identical pitch specification (0.100" / 2.54mm)
• Identical gender configuration (Male)
• Identical row configuration (2 rows)
• Identical read-out type (Dual)
• Identical termination method (Solder)
• Identical contact finish (Gold at 30.0µin thickness)
• Identical operating temperature range (-65°C ~ 200°C)

Mechanical Compatibility:

• Identical insulation material (Polyphenylene Sulfide)
• Identical flange diameter specification (0.125" / 3.18mm)
• Identical flush mount configuration

Compliance Compatibility:

• Both ROHS3 Compliant
• Both MSL 1 (Unlimited)
• Both REACH Unaffected

The RMC39MMSD represents a direct functional equivalent with enhanced product status (Active vs. Obsolete) and improved supply availability.

Parameter Comparison

Engineering Selection Recommendations

The RMC39MMSD is the direct active equivalent for the obsolete AMC39MMSD. Both connectors maintain identical electrical specifications across position count, pitch, gender, row configuration, read-out type, termination method, contact finish, and operating temperature range. Both components satisfy ROHS3 compliance and REACH requirements with MSL 1 classification.

The RMC39MMSD offers improved supply chain status as an active product with 994 pieces in stock compared to the obsolete AMC39MMSD. The substitute part specifies a card thickness of 0.062" (1.57mm) and through-hole mounting type, providing additional design clarity for PCB integration. The contact material differs (phosphor bronze versus beryllium copper), though both materials with identical gold plating thickness maintain electrical performance within the specified operating parameters.

The flange opening orientation differs between the two parts (side opening on AMC39MMSD versus top opening on RMC39MMSD). This mechanical distinction requires verification against specific board layout and assembly process requirements to ensure compatibility with existing tooling and assembly procedures.

Frequently Asked Questions (FAQ)

Q: Can the RMC39MMSD directly replace the AMC39MMSD in existing designs?

A: The RMC39MMSD provides electrical and functional equivalence across all critical parameters including position count, pitch, gender, row configuration, termination, contact finish, and operating temperature. However, the difference in flange opening orientation (side opening versus top opening) and the specified card thickness of 0.062" (1.57mm) on the RMC39MMSD require evaluation against your specific PCB layout and assembly process to confirm mechanical compatibility.

Q: What is the difference in contact material between these two connectors?

A: The AMC39MMSD uses beryllium copper contacts while the RMC39MMSD uses phosphor bronze contacts. Both materials are plated with identical gold finish thickness (30.0µin / 0.76µm) and operate across the same temperature range (-65°C ~ 200°C). Both contact materials satisfy the electrical requirements for this connector category.

Q: Are both connectors compliant with current regulatory standards?

A: Yes. Both the AMC39MMSD and RMC39MMSD are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity level). The RMC39MMSD carries ECCN EAR99 classification and HTSUS code 8536.69.4040.

Q: What is the significance of the card thickness specification on the RMC39MMSD?

A: The RMC39MMSD specifies a card thickness of 0.062" (1.57mm), which defines the edgecard dimension this connector accommodates. The AMC39MMSD does not specify card thickness in the provided data. Verify your edgecard thickness matches the 0.062" specification before selecting the RMC39MMSD.

Q: Why is the AMC39MMSD classified as obsolete?

A: The AMC39MMSD is designated obsolete by the manufacturer. The RMC39MMSD is the active equivalent product, ensuring continued availability and support for new production and field service applications.

Q: Are there any differences in inventory availability?

A: The RMC39MMSD has 994 pieces in stock as a new original active product. The AMC39MMSD has 889 pieces in stock but is obsolete. For new designs and ongoing production, the RMC39MMSD is the recommended selection based on active product status and supply continuity.