AMC27MMST Equivalent & Substitute Parts

Part Overview

The AMC27MMST is a 54-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 the temperature range of -65°C to 200°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility with existing applications.

Substiute Parts

AMC27MMST

Sullins Connector SolutionsIn Stock: 860AMC27MMST Datasheet

Current PartRFQ

RMC27MMST

Sullins Connector SolutionsIn Stock: 942RMC27MMST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC27MMST with the active RMC27MMST is based on alignment of the following critical parameters:

Matching Parameters:

• Number of positions: 54
• Gender: Male
• Pitch: 0.100" (2.54mm)
• Number of rows: 2
• Read out: Dual
• Contact finish: Gold
• Contact finish thickness: 30.0µin (0.76µm)
• Termination: Solder
• Operating temperature range: -65°C ~ 200°C
• Insulation material: Polyphenylene Sulfide (PPS)
• Flange feature: Flush Mount, Top Opening, Threaded Insert, 4-40
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Differing Parameters:

• Contact material: Beryllium Copper (AMC27MMST) vs. Phosphor Bronze (RMC27MMST)
• Card thickness specification: Not specified (AMC27MMST) vs. 0.062" (1.57mm) (RMC27MMST)
• Mounting type: Not specified (AMC27MMST) vs. Through Hole (RMC27MMST)
• Color: Not specified (AMC27MMST) vs. Black (RMC27MMST)
• Product status: Obsolete (AMC27MMST) vs. Active (RMC27MMST)

The RMC27MMST maintains all critical electrical and mechanical interface parameters required for functional compatibility with female edgecards designed for the AMC27MMST.

Parameter Comparison

Engineering Selection Recommendations

The RMC27MMST is the direct active equivalent for the obsolete AMC27MMST. Both connectors are manufactured by Sullins Connector Solutions and share identical electrical interface specifications, including 54-position dual read-out configuration, 0.100" pitch, gold contact finish at 30.0µin thickness, and operating temperature range of -65°C to 200°C.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current applications. The RMC27MMST is currently in active production with documented inventory availability, whereas the AMC27MMST is obsolete.

The contact material difference (beryllium copper versus phosphor bronze) and the specified card thickness of 0.062" for the RMC27MMST do not affect compatibility with standard female edgecard interfaces designed for 0.100" pitch male connectors. The RMC27MMST's through-hole mounting type and black color are functional enhancements that do not compromise electrical or mechanical interface requirements.

Frequently Asked Questions (FAQ)

Q: Can the RMC27MMST directly replace the AMC27MMST in existing applications?

A: Yes. The RMC27MMST maintains all critical interface parameters: 54 positions, male gender, 0.100" pitch, dual read-out, gold plating at 30.0µin, solder termination, and identical operating temperature range. Both connectors interface with female edgecards using the same mechanical and electrical specifications.

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

A: Both materials provide acceptable electrical conductivity and contact reliability for card edge connector applications. The contact finish (gold plating) is identical at 30.0µin thickness, which is the primary determinant of contact performance and corrosion resistance.

Q: Does the RMC27MMST's specified card thickness of 0.062" limit compatibility?

A: No. The card thickness specification indicates the connector is designed for standard 0.062" edgecards. This does not restrict compatibility with female edgecards designed for 0.100" pitch male connectors.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution.

Q: What is the inventory status for each part?

A: The AMC27MMST is obsolete with 771 pieces in stock. The RMC27MMST is active with 833 pieces in stock, providing ongoing availability for new designs and replacements.

Q: Does the black color of the RMC27MMST affect electrical performance?

A: No. Color is a cosmetic specification that does not impact electrical or mechanical function.