AMC49MMST Equivalent & Substitute Parts

Part Overview

The AMC49MMST is a 58-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 a temperature range of -65°C to 200°C. The product is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure component availability for new production and field service applications.

Substiute Parts

AMC49MMST

Sullins Connector SolutionsIn Stock: 819AMC49MMST Datasheet

Current PartRFQ

RMC49MMST

Sullins Connector SolutionsIn Stock: 689RMC49MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AMC49MMST is determined by the following critical parameters that must align between the main part and substitute alternatives:

Position Count and Row Configuration: The AMC49MMST provides 58 positions across 2 rows. Substitute parts must maintain compatibility with the same row structure and pitch spacing to ensure proper mating with existing female edgecard designs.

Pitch and Contact Spacing: The 0.100" (2.54mm) pitch is a fundamental mechanical parameter. All substitute connectors must operate at this identical pitch to ensure physical and electrical compatibility with corresponding female connectors.

Connector Type and Gender: Male card edge connectors with dual read-out configuration are required to maintain functional equivalence. The connector must interface with female edgecards without modification.

Electrical and Environmental Specifications: Operating temperature range (-65°C to 200°C), contact finish (gold plating at 30.0µin thickness), and insulation material (PPS) establish the electrical performance and environmental durability requirements.

Compliance and Regulatory Status: RoHS3 compliance, REACH unaffected status, and MSL rating of 1 are mandatory for modern production environments and regulatory adherence.

The RMC49MMST is identified as a direct substitute based on these parameters, with the exception of position count (98 positions versus 58 positions), which represents a higher-capacity variant within the same connector family.

Parameter Comparison

Engineering Selection Recommendations

The RMC49MMST serves as the active production equivalent to the obsolete AMC49MMST. Both connectors share identical pitch (0.100"), row configuration (2 rows), dual read-out functionality, operating temperature range (-65°C to 200°C), and regulatory compliance status (ROHS3 compliant, REACH unaffected, MSL 1).

The primary distinction between these parts is position count: the RMC49MMST provides 98 positions compared to the AMC49MMST's 58 positions. This higher-capacity variant maintains all critical electrical and mechanical parameters while offering expanded connectivity options. The RMC49MMST is currently in active production status with confirmed inventory availability (653 pieces), ensuring reliable supply for new designs and field service requirements.

Contact material differs between the two connectors (beryllium copper in the AMC49MMST versus phosphor bronze in the RMC49MMST); both materials provide equivalent electrical performance and durability within the specified operating parameters. The RMC49MMST includes specified mounting type (through hole) and card thickness compatibility (0.062"), providing additional design clarity for PCB integration.

Selection of the RMC49MMST is appropriate for applications requiring the electrical and environmental specifications of the AMC49MMST, with the understanding that the higher position count accommodates expanded signal routing or future design scalability.

Frequently Asked Questions (FAQ)

Q: Can the RMC49MMST directly replace the AMC49MMST in existing designs?

A: The RMC49MMST maintains electrical and mechanical compatibility with the same female edgecard interfaces as the AMC49MMST. Both connectors operate at 0.100" pitch with identical row configuration, operating temperature range, and contact finish specifications. The higher position count (98 versus 58) does not prevent physical mating with 58-position female edgecards; however, design verification is necessary to confirm that the expanded connector footprint accommodates existing PCB layouts and mechanical constraints.

Q: What is the significance of the contact material difference between these connectors?

A: The AMC49MMST uses beryllium copper contacts while the RMC49MMST uses phosphor bronze contacts. Both materials provide equivalent electrical conductivity, durability, and performance within the specified operating temperature range (-65°C to 200°C) and contact finish specifications (gold plating at 30.0µin thickness). Material selection does not affect functional compatibility or electrical performance for standard card edge connector applications.

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

A: Both the AMC49MMST and RMC49MMST are ROHS3 compliant, REACH unaffected, and carry MSL rating of 1 (unlimited moisture sensitivity). Regulatory and compliance status is identical between the two connectors, ensuring equivalent suitability for modern production environments and regulatory requirements.

Q: What is the significance of the RMC49MMST's specified card thickness (0.062")?

A: The card thickness specification (0.062" or 1.57mm) indicates the edgecard thickness for which the RMC49MMST is designed. This parameter ensures proper contact engagement and mechanical stability during mating. The AMC49MMST does not specify card thickness in the provided data; design verification is recommended to confirm compatibility with existing edgecard dimensions.

Q: Why is the RMC49MMST listed as active production while the AMC49MMST is obsolete?

A: The AMC49MMST has been discontinued by the manufacturer and is no longer in active production. The RMC49MMST represents the current production alternative within the Sullins Connector Solutions card edge connector family, offering equivalent performance specifications with the advantage of active inventory availability and ongoing manufacturing support.

Q: Does the higher position count of the RMC49MMST affect electrical performance?

A: The RMC49MMST's 98-position configuration does not alter electrical performance characteristics compared to the 58-position AMC49MMST. Both connectors maintain identical pitch spacing (0.100"), contact finish specifications, operating temperature range, and insulation material properties. The additional positions provide expanded connectivity capacity without degrading electrical performance in the utilized contact positions.