AMC04MMST Equivalent & Substitute Parts

Part Overview

The AMC04MMST is an 8-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 gold-plated beryllium copper contacts, dual read-out configuration, and operates across -65°C to 200°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability for new production and field service applications.

Substiute Parts

AMC04MMST

Sullins Connector SolutionsIn Stock: 1064AMC04MMST Datasheet

Current PartRFQ

RMC04MMST

Sullins Connector SolutionsIn Stock: 1019RMC04MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC04MMST with the active RMC04MMST is based on electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility:

• Identical connector type (card edge, male)
• Matching position count (8 positions in 2 rows of 4)
• Identical pitch specification (0.100" / 2.54mm)
• Dual read-out configuration maintained
• Equivalent contact finish (gold plating at 30.0µin thickness)
• Identical operating temperature range (-65°C ~ 200°C)

Mechanical Compatibility:

• Matching flange feature (flush mount, top opening, threaded insert, 4-40)
• Identical insulation material (Polyphenylene Sulfide)
• Solder termination method preserved
• Same mounting interface

Compliance & Status:

• Both parts maintain ROHS3 compliance
• Both parts carry MSL 1 (unlimited moisture sensitivity level)
• RMC04MMST is active product status, ensuring ongoing availability

The primary differences—contact material composition (phosphor bronze vs. beryllium copper), card thickness specification (0.062" specified for RMC04MMST), and color designation (black)—do not preclude functional substitution when the female edgecard interface remains unchanged.

Parameter Comparison

Engineering Selection Recommendations

The RMC04MMST serves as the direct active equivalent for the obsolete AMC04MMST. Selection of the RMC04MMST is supported by the following engineering factors:

Product Status & Availability: The RMC04MMST maintains active product status with confirmed inventory of 1000 pieces, ensuring supply chain continuity. The AMC04MMST is classified as obsolete, making the RMC04MMST the appropriate selection for new designs and ongoing production requirements.

Compliance & Certification: Both parts maintain identical ROHS3 compliance and REACH unaffected status. Both carry MSL 1 rating, indicating no moisture sensitivity restrictions. The RMC04MMST carries ECCN classification EAR99 and HTSUS code 8536.69.4040, providing clear regulatory documentation for procurement and export purposes.

Electrical & Mechanical Equivalence: The RMC04MMST preserves all critical electrical parameters: 8-position configuration, 0.100" pitch, dual read-out, gold contact finish at identical thickness, and full operating temperature range. Mechanical interface parameters—flange configuration, insulation material, and solder termination—remain unchanged, ensuring direct substitution in existing PCB layouts and female edgecard interfaces.

Contact Material Consideration: The RMC04MMST employs phosphor bronze contacts versus beryllium copper in the original part. Both materials provide equivalent electrical performance and corrosion resistance when gold-plated to the specified 30.0µin thickness. This substitution does not introduce performance degradation in standard card edge connector applications.

Frequently Asked Questions (FAQ)

Q: Can the RMC04MMST directly replace the AMC04MMST in existing designs?

A: Yes. The RMC04MMST maintains identical electrical and mechanical specifications across all critical parameters: 8-position configuration, 0.100" pitch, dual read-out, gold plating thickness, operating temperature range, and flange mounting interface. Direct substitution is supported without design modification.

Q: What is the significance of the contact material difference between beryllium copper and phosphor bronze?

A: Both materials provide equivalent electrical conductivity and corrosion resistance when finished with gold plating at the specified 30.0µin thickness. The contact material composition does not affect connector performance in standard card edge applications. The gold finish provides the primary corrosion protection and electrical interface characteristics.

Q: Does the RMC04MMST specification of 0.062" card thickness affect compatibility?

A: The RMC04MMST is specified to accommodate 0.062" (1.57mm) card thickness. This specification indicates the connector's design tolerance for female edgecard thickness. Compatibility depends on the actual thickness of the female edgecard in the application. Verify that the female edgecard thickness matches or falls within the RMC04MMST tolerance.

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

A: Both parts maintain ROHS3 compliance and carry MSL 1 rating. The RMC04MMST provides additional regulatory documentation through ECCN classification (EAR99) and HTSUS code (8536.69.4040), which may be required for procurement and export documentation. No compliance disadvantages exist with the RMC04MMST.

Q: What is the inventory status for the RMC04MMST?

A: The RMC04MMST is confirmed in stock with 1000 pieces available as new original inventory. The AMC04MMST, classified as obsolete, has 960 pieces in stock but is no longer in active production. For new production requirements, the RMC04MMST is the appropriate selection.

Q: Does the black color designation of the RMC04MMST affect electrical performance?

A: No. The color designation is a cosmetic feature related to the insulation material appearance and does not affect electrical performance, contact characteristics, or mechanical function. The color difference does not preclude substitution.

Q: What mounting method does the RMC04MMST use?

A: The RMC04MMST employs through-hole mounting with solder termination, identical to the original AMC04MMST. The flange feature (flush mount, top opening, threaded insert, 4-40) remains unchanged, ensuring compatibility with existing PCB layouts and mounting hardware.