DCM37SN D-Sub 37 Position Receptacle Connector

Part Overview

The DCM37SN is a 37 position D-Sub receptacle connector manufactured by Amphenol ICC (FCI) with female sockets and solder cup termination. This connector is classified as obsolete, making substitute parts necessary for ongoing procurement and system maintenance. The DCM37SN belongs to the DM HE508 series and is designed for applications requiring robust D-shaped connector solutions with signal-level contact capability.

Substiute Parts

DCM37SN

Amphenol ICC (FCI)In Stock: 1238DCM37SN Datasheet

Current PartRFQ

DCM37S

Cinch Connectivity SolutionsIn Stock: 931DCM37S Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DCM37SN is based on maintaining functional and electrical compatibility through alignment of critical parameters. The substitute part DCM37S from Cinch Connectivity Solutions shares the following core compatibility criteria:

Matched Parameters:

• Connector style: D-Sub
• Connector type: Receptacle, Female Sockets
• Number of positions: 37
• Number of rows: 2
• Shell size and connector layout: 4 (DC, C)
• Mounting type: Free Hanging (In-Line)
• Termination method: Solder Cup
• Flange feature: Housing/Shell (Unthreaded)
• Contact form: Machined
• Material flammability rating: UL94 V-0
• Moisture sensitivity level: 1 (Unlimited)

The DCM37S is classified as an active product, providing ongoing availability and supply chain continuity for applications currently using the obsolete DCM37SN.

Parameter Comparison

Engineering Selection Recommendations

The DCM37S from Cinch Connectivity Solutions is the designated substitute for the obsolete DCM37SN. Both connectors maintain identical mechanical and electrical interface specifications, ensuring physical and functional compatibility in D-Sub 37 position applications.

Key considerations for selection:

Current Rating Differential: The DCM37SN supports 7.5A per contact, while the DCM37S supports 5A per contact. Applications operating at current levels between 5A and 7.5A per contact require evaluation against actual system requirements.

Operating Temperature Range: The DCM37SN operates from -55°C to 155°C, while the DCM37S operates from -65°C to 125°C. Applications requiring the full upper temperature range of 155°C should be assessed for compatibility with the DCM37S upper limit of 125°C.

Shell Finish: The DCM37SN uses yellow cadmium plating, while the DCM37S uses yellow chromate plating with zinc. Both finishes provide corrosion protection suitable for standard industrial environments.

Contact Material: The DCM37SN uses brass contacts, while the DCM37S uses phosphor bronze contacts. Both materials are suitable for signal-level applications with gold plating.

Dielectric Material: The DCM37SN uses thermoplastic dielectric, while the DCM37S uses glass-filled DAP. Both materials meet UL94 V-0 flammability requirements.

Both connectors are RoHS non-compliant and carry MSL 1 (Unlimited) moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can the DCM37S directly replace the DCM37SN in existing applications?

A: The DCM37S is mechanically and electrically compatible with the DCM37SN for D-Sub 37 position receptacle applications. However, applications must operate within the DCM37S specifications: maximum 5A per contact and operating temperature range of -65°C to 125°C.

Q: What is the difference in shell plating between these connectors?

A: The DCM37SN uses yellow cadmium plating, while the DCM37S uses yellow chromate plating with zinc. Both provide corrosion protection for industrial applications. The choice between them depends on environmental exposure and specific application requirements.

Q: Are there voltage rating differences between the DCM37SN and DCM37S?

A: The DCM37SN specifies a 300V voltage rating. The DCM37S does not specify a voltage rating in the provided data. Applications requiring explicit voltage rating confirmation should contact the manufacturer.

Q: What is the significance of the contact material difference?

A: The DCM37SN uses brass contacts, while the DCM37S uses phosphor bronze contacts. Both materials are suitable for signal-level applications and are finished with gold plating. Phosphor bronze offers slightly different mechanical properties but maintains compatibility for standard D-Sub applications.

Q: How do the operating temperature ranges compare?

A: The DCM37SN operates from -55°C to 155°C, while the DCM37S operates from -65°C to 125°C. The DCM37S provides lower temperature capability but has a reduced upper temperature limit. Applications requiring operation above 125°C should verify compatibility.

Q: Are both connectors RoHS compliant?

A: No. Both the DCM37SN and DCM37S are RoHS non-compliant due to their cadmium and chromate plating finishes.

Q: What is the packaging format for the DCM37S?

A: The DCM37S is supplied in bulk packaging, compared to the DCM37SN which does not specify packaging format in the provided data.