AMC38MMST Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC38MMST is a 76-position male card edge connector manufactured by Sullins Connector Solutions, designed to interface with female edgecards using a 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 AMC38MMST is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements.

Substiute Parts

AMC38MMST

Sullins Connector SolutionsIn Stock: 1123AMC38MMST Datasheet

Current PartRFQ

RMC38MMST

Sullins Connector SolutionsIn Stock: 890RMC38MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The RMC38MMST qualifies as a direct substitute for the AMC38MMST based on alignment of critical electrical and mechanical parameters. Both connectors maintain identical specifications for the following substitution-determining criteria:

• 76-position configuration with 38 positions per row across 2 rows
• 0.100" (2.54mm) pitch spacing
• Male gender with dual read-out functionality
• Solder termination method
• Gold contact finish at 30.0µin (0.76µm) thickness
• Operating temperature range of -65°C to 200°C
• Polyphenylene Sulfide (PPS) insulation material
• Flush mount flange with top opening and 4-40 threaded insert
• ROHS3 compliance and MSL 1 rating

The RMC38MMST is an active product, whereas the AMC38MMST is obsolete. The substitute part incorporates phosphor bronze contact material in place of beryllium copper and specifies a card thickness of 0.062" (1.57mm). Both parts are manufactured by Sullins Connector Solutions.

Parameter Comparison

Engineering Selection Recommendations

The RMC38MMST is the appropriate substitute for the obsolete AMC38MMST in applications requiring a 76-position male card edge connector with 0.100" pitch and dual read-out configuration. The substitute part maintains full electrical and mechanical compatibility through identical pitch, position count, row configuration, termination method, contact finish specification, and operating temperature range.

The RMC38MMST is an active product with current manufacturing support and inventory availability, eliminating supply chain risk associated with the obsolete AMC38MMST. Both parts satisfy ROHS3 compliance requirements and carry MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling.

The contact material difference between beryllium copper (AMC38MMST) and phosphor bronze (RMC38MMST) does not affect functional compatibility, as both materials provide equivalent electrical conductivity and mechanical performance within the specified operating parameters. The RMC38MMST includes a specified card thickness of 0.062" (1.57mm), providing dimensional clarity for PCB design integration.

Frequently Asked Questions (FAQ)

Q: Can the RMC38MMST directly replace the AMC38MMST in existing designs?

A: Yes. The RMC38MMST maintains identical electrical and mechanical specifications for all critical parameters including position count, pitch, gender, read-out configuration, termination method, contact finish, operating temperature range, and mounting features. The connector interfaces with female edgecards using the same 0.100" (2.54mm) pitch spacing and dual row configuration.

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

A: The AMC38MMST uses beryllium copper contacts while the RMC38MMST uses phosphor bronze contacts. Both materials provide equivalent electrical conductivity and mechanical durability within the specified operating parameters. The contact finish (gold at 30.0µin thickness) is identical on both parts, ensuring consistent electrical performance and corrosion resistance.

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

A: Both the AMC38MMST and RMC38MMST are ROHS3 compliant and carry REACH Unaffected status. Both parts have MSL 1 rating, indicating unlimited shelf life without moisture sensitivity constraints. Compliance profiles are equivalent.

Q: What is the card thickness specification for the RMC38MMST?

A: The RMC38MMST is specified for a card thickness of 0.062" (1.57mm). This specification should be verified against the female edgecard thickness in the target application to ensure proper mechanical fit and electrical contact.

Q: Why is the AMC38MMST classified as obsolete?

A: The AMC38MMST has been discontinued by Sullins Connector Solutions. The RMC38MMST is the active equivalent product offering identical functionality with current manufacturing support and inventory availability.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the AMC38MMST and RMC38MMST operate across the identical temperature range of -65°C to 200°C, supporting applications requiring extended thermal performance.