AMC27MMSD Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC27MMSD is a 54-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 the temperature range of -65°C to 200°C.

The AMC27MMSD is classified as obsolete. Locating equivalent or substitute components is necessary to support ongoing maintenance, repair, and replacement requirements for legacy systems utilizing this connector type.

Substiute Parts

AMC27MMSD

Sullins Connector SolutionsIn Stock: 719AMC27MMSD Datasheet

Current PartRFQ

RMC27MMSD

Sullins Connector SolutionsIn Stock: 1048RMC27MMSD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC27MMSD with the active RMC27MMSD is based on the following critical parameters that remain consistent between both components:

Matching Parameters:

• 54-position connector configuration
• 0.100" (2.54mm) pitch spacing
• Dual read-out design
• Male gender orientation
• Solder termination method
• Gold contact finish at 30.0µin thickness
• Operating temperature range of -65°C to 200°C
• Polyphenylene Sulfide (PPS) insulation material
• ROHS3 compliance and MSL 1 rating

Differing Parameters:

• Contact material (beryllium copper vs. phosphor bronze)
• Flange opening orientation (side opening vs. top opening)
• Card thickness specification (unspecified vs. 0.062")
• Mounting type (unspecified vs. through hole)
• Color designation (unspecified vs. black)
• Product status (obsolete vs. active)

The RMC27MMSD maintains functional and electrical compatibility through identical pitch, position count, read-out configuration, and contact finish specifications. Differences in contact material and flange design do not prevent substitution in applications where the original AMC27MMSD was deployed.

Parameter Comparison

Engineering Selection Recommendations

The RMC27MMSD serves as the direct substitute for the obsolete AMC27MMSD based on the following engineering criteria:

Product Status and Availability: The RMC27MMSD maintains active product status with 1034 units in stock, whereas the AMC27MMSD is obsolete. Selection of the active substitute ensures long-term component availability and supply chain continuity.

Regulatory Compliance: Both components maintain ROHS3 compliance and carry MSL 1 (Unlimited) moisture sensitivity ratings, ensuring compatibility with current manufacturing and storage standards. The RMC27MMSD carries ECCN EAR99 classification and HTSUS code 8536.69.4040, supporting international trade requirements.

Electrical and Mechanical Compatibility: The RMC27MMSD preserves all critical electrical parameters including 54-position configuration, 0.100" pitch, dual read-out design, gold contact finish at 30.0µin thickness, and identical operating temperature range. These parameters ensure functional interchangeability in existing circuit board designs and connector interfaces.

Material and Construction: Both components utilize Polyphenylene Sulfide (PPS) insulation and solder termination. The substitution of phosphor bronze contacts for beryllium copper and the modification of flange opening orientation do not compromise electrical performance or mechanical fit in standard card edge applications.

Frequently Asked Questions (FAQ)

Q: Can the RMC27MMSD directly replace the AMC27MMSD in existing designs?

A: Yes. The RMC27MMSD maintains identical pitch (0.100"), position count (54), read-out configuration (dual), contact finish (gold at 30.0µin), and operating temperature range (-65°C to 200°C). These parameters ensure functional compatibility in applications where the AMC27MMSD was originally specified.

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

A: Both materials provide adequate electrical conductivity and contact reliability for card edge connector applications. The contact finish (gold plating) is identical at 30.0µin thickness, which is the primary factor determining electrical performance and corrosion resistance. The base material difference does not affect substitution suitability.

Q: How do the flange opening differences affect connector installation?

A: The AMC27MMSD features side opening with flush mount configuration, while the RMC27MMSD features top opening with flush mount configuration. Both maintain the same 0.125" (3.18mm) diameter unthreaded flange. The opening orientation difference accommodates different board layout requirements but does not prevent substitution in standard card edge applications.

Q: Are there any compliance or certification differences between the two parts?

A: Both components are ROHS3 compliant with MSL 1 (Unlimited) ratings. The RMC27MMSD carries additional regulatory designations (ECCN EAR99, HTSUS 8536.69.4040) that support international distribution. These designations do not affect functional compatibility.

Q: What is the card thickness specification for the RMC27MMSD?

A: The RMC27MMSD is specified for 0.062" (1.57mm) card thickness. This specification should be verified against the actual card thickness in the target application to ensure proper connector engagement and contact pressure.

Q: Why is the AMC27MMSD classified as obsolete?

A: Obsolescence classification indicates that the manufacturer has discontinued production and support for this component. The RMC27MMSD represents the active equivalent offering from the same manufacturer, providing continued access to functionally compatible 54-position card edge connector technology.