AMC37MMSD Card Edge Connector Equivalent & Substitute Parts

Part Overview

The AMC37MMSD is a 74-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 with gold-plated beryllium copper contacts and operates across -65°C to 200°C. The AMC37MMSD is classified as obsolete, necessitating identification of active equivalent parts for new designs and ongoing production requirements.

Substiute Parts

AMC37MMSD

Sullins Connector SolutionsIn Stock: 765AMC37MMSD Datasheet

Current PartRFQ

RMC37MMSD

Sullins Connector SolutionsIn Stock: 811RMC37MMSD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete AMC37MMSD with the active RMC37MMSD is based on the following critical parameters that remain constant across both parts:

Invariant Parameters (Must Match for Substitution):

• Connector category: Card Edge Connectors
• Manufacturer: Sullins Connector Solutions
• Gender: Male
• Number of positions: 74
• Pitch: 0.100" (2.54mm)
• Read out configuration: Dual
• Number of rows: 2
• Termination method: Solder
• Contact finish: Gold
• Contact finish thickness: 30.0µin (0.76µm)
• Operating temperature range: -65°C ~ 200°C
• Insulation material: Polyphenylene Sulfide (PPS)
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)
• Flange diameter: 0.125" (3.18mm)

Variant Parameters (Differences Between Parts):

• Contact material: Beryllium Copper (AMC37MMSD) vs. Phosphor Bronze (RMC37MMSD)
• Flange opening orientation: Side Opening (AMC37MMSD) vs. Top Opening (RMC37MMSD)
• Mounting type: Not specified (AMC37MMSD) vs. Through Hole (RMC37MMSD)
• Card thickness specification: Not specified (AMC37MMSD) vs. 0.062" (1.57mm) (RMC37MMSD)
• Color: Not specified (AMC37MMSD) vs. Black (RMC37MMSD)
• Product status: Obsolete (AMC37MMSD) vs. Active (RMC37MMSD)

Parameter Comparison

Engineering Selection Recommendations

The RMC37MMSD serves as the direct active substitute for the obsolete AMC37MMSD. Both connectors maintain identical electrical and mechanical specifications across all critical interface parameters: 74-position configuration, 0.100" pitch, dual read-out, solder termination, gold contact finish, and operating temperature range of -65°C to 200°C.

Both parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity classification, ensuring compatibility with standard manufacturing and storage protocols. The RMC37MMSD is currently in active production status with 733 pieces available in inventory, whereas the AMC37MMSD is obsolete with limited remaining stock of 738 pieces.

The primary differences between these connectors are the contact material composition (beryllium copper versus phosphor bronze), flange opening orientation (side versus top), and the specified mounting type and card thickness for the RMC37MMSD. These differences do not affect functional compatibility when the RMC37MMSD is applied to applications previously served by the AMC37MMSD, provided the mechanical envelope accommodates the top opening flange orientation and through-hole mounting configuration.

Frequently Asked Questions (FAQ)

Q: Can the RMC37MMSD directly replace the AMC37MMSD in existing designs?

A: The RMC37MMSD is electrically and functionally equivalent to the AMC37MMSD across all critical parameters including position count, pitch, contact finish, and operating temperature range. Physical layout differences exist in flange opening orientation (top versus side) and mounting type specification. Design review is required to confirm mechanical compatibility with the specific PCB layout and card edge interface geometry.

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

A: The AMC37MMSD uses beryllium copper contacts while the RMC37MMSD uses phosphor bronze contacts. Both materials are specified with identical gold plating thickness (30.0µin) and provide equivalent electrical performance for this connector category. The contact material difference does not affect electrical interface characteristics or signal integrity.

Q: Why does the RMC37MMSD specify a card thickness of 0.062" while the AMC37MMSD does not?

A: The RMC37MMSD includes a specified card thickness parameter of 0.062" (1.57mm) as part of its active product documentation. The AMC37MMSD does not include this specification in available data. Both connectors are designed to interface with female edgecards at 0.100" pitch and maintain identical electrical and mechanical compatibility across the specified operating parameters.

Q: Are both connectors RoHS compliant?

A: Both the AMC37MMSD and RMC37MMSD are ROHS3 compliant. Both carry MSL 1 (Unlimited) moisture sensitivity level classification, indicating no special moisture control requirements during storage, handling, or assembly.

Q: What is the difference between side opening and top opening flange configurations?

A: The AMC37MMSD features a side opening flange while the RMC37MMSD features a top opening flange. Both flanges are flush mount with 0.125" (3.18mm) diameter and unthreaded design. The opening orientation affects the mechanical approach angle for card insertion and the spatial requirements in the PCB layout. Selection between these configurations depends on the specific mechanical constraints of the application.

Q: Is the RMC37MMSD suitable for new product designs?

A: The RMC37MMSD is classified as active product status with current manufacturing availability and 733 pieces in inventory. This connector is suitable for new product designs requiring 74-position male card edge connectors with 0.100" pitch, dual read-out, solder termination, and -65°C to 200°C operating temperature range.