AMC42MMST Equivalent & Substitute Parts

Part Overview

The AMC42MMST is an 84-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 part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

AMC42MMST

Sullins Connector SolutionsIn Stock: 758AMC42MMST Datasheet

Current PartRFQ

RMC42MMST

Sullins Connector SolutionsIn Stock: 1066RMC42MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The RMC42MMST serves as a direct functional equivalent to the AMC42MMST within the Sullins Connector Solutions card edge connector product line. Substitution compatibility is established through alignment of the following critical parameters:

Matching Parameters:

• Number of positions: 84 (42 per row, 2 rows)
• Pitch specification: 0.100" (2.54mm)
• Connector gender: Male
• Read-out configuration: Dual
• Contact finish: Gold, 30.0µin (0.76µm)
• Operating temperature range: -65°C to 200°C
• Insulation material: Polyphenylene Sulfide (PPS)
• Termination method: Solder
• Flange feature: Flush Mount, Top Opening, Threaded Insert 4-40
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: MSL 1 (Unlimited)

Differing Parameters:

• Contact material: Phosphor Bronze (RMC42MMST) versus Beryllium Copper (AMC42MMST)
• Card thickness specification: 0.062" (1.57mm) (RMC42MMST) versus unspecified (AMC42MMST)
• Mounting type: Through Hole (RMC42MMST) versus unspecified (AMC42MMST)
• Color: Black (RMC42MMST) versus unspecified (AMC42MMST)
• Product status: Active (RMC42MMST) versus Obsolete (AMC42MMST)

Parameter Comparison

Engineering Selection Recommendations

The RMC42MMST is the appropriate substitute for the obsolete AMC42MMST in applications requiring 84-position male card edge connectors with 0.100" pitch and dual read-out configuration. Both connectors maintain identical electrical and mechanical interface specifications, including contact finish thickness, operating temperature range, and flange configuration.

The RMC42MMST carries active product status with ROHS3 compliance and REACH unaffected designation, ensuring availability for current production and future procurement cycles. The connector is specified for 0.062" (1.57mm) card thickness with through-hole mounting configuration and phosphor bronze contact material, providing equivalent performance characteristics to the beryllium copper contacts of the original part.

Selection of the RMC42MMST eliminates obsolescence risk while maintaining full compatibility with existing female edgecard interfaces designed for the AMC42MMST specification.

Frequently Asked Questions (FAQ)

Q: Can the RMC42MMST directly replace the AMC42MMST in existing designs?

A: Yes. Both connectors share identical pitch (0.100"), position count (84), read-out configuration (dual), contact finish (gold, 30.0µin), operating temperature range (-65°C to 200°C), and flange specifications. The RMC42MMST is designed to interface with the same female edgecard connectors as the AMC42MMST.

Q: What is the significance of the contact material difference between the two parts?

A: The AMC42MMST uses beryllium copper contacts while the RMC42MMST uses phosphor bronze contacts. Both materials are plated with identical gold finish thickness (30.0µin) and provide equivalent electrical performance for card edge connector applications. The contact material difference does not affect substitution compatibility.

Q: Does the RMC42MMST specify a card thickness while the AMC42MMST does not?

A: The RMC42MMST is specified for 0.062" (1.57mm) card thickness. This specification indicates the connector is designed for standard edgecard thickness. The absence of card thickness specification in the AMC42MMST documentation does not preclude compatibility with 0.062" cards, as this is the standard thickness for 0.100" pitch edgecard connectors.

Q: Are both connectors RoHS compliant?

A: Yes. Both the AMC42MMST and RMC42MMST are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the moisture sensitivity level for these connectors?

A: Both connectors carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or assembly processes.

Q: Why is the RMC42MMST listed as active while the AMC42MMST is obsolete?

A: The AMC42MMST has been discontinued by Sullins Connector Solutions and is no longer in active production. The RMC42MMST represents the current active equivalent within the product line, ensuring ongoing availability and support for new designs and production requirements.