AMC45MMST Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC45MMST is a 90-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 AMC45MMST is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

AMC45MMST

Sullins Connector SolutionsIn Stock: 698AMC45MMST Datasheet

Current PartRFQ

RMC45MMST

Sullins Connector SolutionsIn Stock: 1055RMC45MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC45MMST with the active RMC45MMST is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Identical 90-position configuration (45 positions per row, 2 rows)
• Matching 0.100" (2.54mm) pitch for direct PCB footprint compatibility
• Equivalent gold contact finish thickness (30.0µin / 0.76µm)
• Identical dual read-out functionality
• Matching operating temperature range (-65°C to 200°C)

Mechanical Compatibility:

• Identical flange configuration (Flush Mount, Top Opening, Threaded Insert, 4-40)
• Matching insulation material (Polyphenylene Sulfide / PPS)
• Solder termination on both connectors
• Both designed for female edgecard interface

Compliance Equivalence:

• Both ROHS3 compliant
• Both MSL 1 (Unlimited moisture sensitivity level)
• Both REACH unaffected

Differences Noted:

• Contact material: Beryllium Copper (AMC45MMST) versus Phosphor Bronze (RMC45MMST)
• Card thickness specification: Not specified (AMC45MMST) versus 0.062" (1.57mm) (RMC45MMST)
• Mounting type: Not specified (AMC45MMST) versus Through Hole (RMC45MMST)
• Color: Not specified (AMC45MMST) versus Black (RMC45MMST)
• Product status: Obsolete (AMC45MMST) versus Active (RMC45MMST)

Parameter Comparison

Engineering Selection Recommendations

The RMC45MMST serves as the direct active equivalent for the obsolete AMC45MMST. Selection of the RMC45MMST is supported by the following engineering factors:

Product Status: The RMC45MMST maintains active production status with 970 units in current inventory, whereas the AMC45MMST is obsolete with no ongoing manufacturing support.

Compliance Certification: Both connectors maintain identical ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for applications subject to environmental directives.

Electrical and Mechanical Specifications: The RMC45MMST preserves all critical electrical parameters including 90-position configuration, 0.100" pitch, dual read-out, gold contact finish thickness, and operating temperature range. Mechanical compatibility is maintained through identical flange configuration, insulation material, and solder termination.

Contact Material Difference: The RMC45MMST employs phosphor bronze contacts in place of beryllium copper. Both materials provide suitable electrical conductivity and contact reliability for card edge connector applications at the specified operating temperature range and contact finish thickness.

Specification Clarity: The RMC45MMST provides explicit specification of 0.062" (1.57mm) card thickness and through-hole mounting type, offering enhanced design documentation compared to the main part.

Frequently Asked Questions (FAQ)

Q: Can the RMC45MMST directly replace the AMC45MMST in existing designs?

A: Yes. The RMC45MMST maintains electrical and mechanical compatibility across all critical parameters: 90-position configuration, 0.100" pitch, dual read-out, gold contact finish, operating temperature range, and flange configuration. Both connectors interface with identical female edgecard specifications.

Q: What is the difference between beryllium copper and phosphor bronze contacts?

A: Both materials provide electrical conductivity and contact reliability suitable for card edge connector applications. The contact finish thickness (30.0µin / 0.76µm gold plating) is identical on both connectors, which is the primary determinant of contact performance in this application category.

Q: Are there any compliance or certification differences between these connectors?

A: No. Both the AMC45MMST and RMC45MMST maintain identical ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity level.

Q: What is the specified card thickness for the RMC45MMST?

A: The RMC45MMST is specified for 0.062" (1.57mm) card thickness. This specification is explicitly provided for the substitute part.

Q: Are the flange and mounting configurations identical?

A: Yes. Both connectors feature flush mount configuration with top opening, threaded insert, and 4-40 fastening specification.

Q: What is the operating temperature range for both connectors?

A: Both the AMC45MMST and RMC45MMST operate across -65°C to 200°C.

Q: Is the pitch identical between both connectors?

A: Yes. Both connectors maintain 0.100" (2.54mm) pitch, ensuring direct PCB footprint compatibility.