AMC20MMSD Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC20MMSD is a 40-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 AMC20MMSD is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements.

Substiute Parts

AMC20MMSD

Sullins Connector SolutionsIn Stock: 1212AMC20MMSD Datasheet

Current PartRFQ

RMC20MMSD

Sullins Connector SolutionsIn Stock: 1049RMC20MMSD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC20MMSD is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector type: Male card edge connector
• Total position count: 40 positions
• Pitch specification: 0.100" (2.54mm)
• Read out configuration: Dual
• Number of rows: 2
• Termination method: Solder
• Contact finish: Gold
• Contact finish thickness: 30.0µin (0.76µm)
• Operating temperature range: -65°C ~ 200°C
• Insulation material: Polyphenylene Sulfide (PPS)
• Flange configuration: Flush Mount, Unthreaded, 0.125" (3.18mm) Dia
• Compliance certifications: ROHS3 Compliant, REACH Unaffected

Allowable Variations:

• Contact material composition (beryllium copper to phosphor bronze)
• Card thickness specification
• Flange opening orientation (side opening to top opening)
• Mounting type classification
• Connector color
• Product status transition (obsolete to active)

The RMC20MMSD meets all mandatory matching parameters while introducing allowable variations in contact material, card thickness, and flange opening orientation.

Parameter Comparison

Engineering Selection Recommendations

The RMC20MMSD serves as the direct active equivalent for the obsolete AMC20MMSD. Both connectors maintain identical electrical and mechanical specifications across all critical parameters including position count, pitch, read-out configuration, termination method, contact finish thickness, operating temperature range, and insulation material.

The RMC20MMSD is ROHS3 compliant and REACH unaffected, matching the compliance profile of the original part. The transition from beryllium copper to phosphor bronze contact material and the change from side opening to top opening flange orientation represent allowable design variations within the same connector family. The specified card thickness of 0.062" (1.57mm) for the RMC20MMSD accommodates standard edgecard applications.

The active product status of the RMC20MMSD ensures ongoing availability and manufacturing support, eliminating supply chain constraints associated with the obsolete AMC20MMSD.

Frequently Asked Questions (FAQ)

Q: Can the RMC20MMSD directly replace the AMC20MMSD in existing designs?

A: The RMC20MMSD maintains electrical and mechanical compatibility with the AMC20MMSD across all critical parameters. The flange opening orientation change from side to top opening and contact material variation from beryllium copper to phosphor bronze are allowable substitutions within the connector specification. PCB layout and mechanical mounting considerations must account for the top opening flange configuration.

Q: What is the significance of the card thickness specification difference?

A: The AMC20MMSD does not specify card thickness, while the RMC20MMSD specifies 0.062" (1.57mm). This specification indicates the RMC20MMSD is optimized for standard edgecard thickness. Edgecards within this thickness range interface correctly with both connectors.

Q: How do the contact materials differ between these connectors?

A: The AMC20MMSD uses beryllium copper contacts while the RMC20MMSD uses phosphor bronze contacts. Both materials are gold-plated to 30.0µin (0.76µm) thickness and operate across the identical temperature range of -65°C to 200°C. Both contact materials provide equivalent electrical performance for card edge connector applications.

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

A: Both connectors are ROHS3 compliant and REACH unaffected. No compliance or regulatory differences exist between the AMC20MMSD and RMC20MMSD.

Q: What does the flange opening orientation change mean for installation?

A: The AMC20MMSD features side opening flange configuration while the RMC20MMSD features top opening flange configuration. This affects the mechanical approach angle during card insertion. PCB layout and mechanical clearance must accommodate the top opening orientation of the RMC20MMSD.

Q: Is the RMC20MMSD suitable for new production designs?

A: The RMC20MMSD is classified as active product status, ensuring manufacturing availability and supply chain continuity. This connector is appropriate for new production designs requiring 40-position male card edge connectors at 0.100" pitch with dual read-out configuration.