L77SDCG37S D-Sub Receptacle Connector

Part Overview

The L77SDCG37S is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets with solder cup termination and is designed for applications requiring robust signal transmission in industrial and commercial environments. The product maintains Active status with 711 units in current inventory.

Identifying equivalent substitute parts becomes necessary when addressing supply chain constraints, lead time requirements, or specific application needs that may benefit from alternative mounting configurations or enhanced current ratings. Substitute parts must maintain compatibility across critical electrical and mechanical parameters while meeting relevant compliance standards.

Substiute Parts

L77SDCG37S

Amphenol ICC (Commercial Products)In Stock: 816L77SDCG37S Datasheet

Current PartRFQ

171-037-203L001

NorComp Inc.In Stock: 1417171-037-203L001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the L77SDCG37S is determined by strict alignment with the following critical parameters:

• Connector Configuration: Must be 37-position D-Sub receptacle with female sockets
• Shell Size and Layout: Must match 4 (DC, C) specification
• Termination Method: Must utilize solder cup termination
• Electrical Compatibility: Must support signal-type contacts with adequate voltage and current ratings for the application
• Compliance Standards: Must maintain RoHS or ROHS3 compliance and UL94 V-0 flammability rating

The identified substitute part 171-037-203L001 maintains compatibility across connector configuration, shell size, layout, and termination method. The primary distinction lies in mounting type (Panel Mount versus Free Hanging In-Line) and operational temperature range, which determine applicability based on specific installation requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the L77SDCG37S and 171-037-203L001 maintain Active product status with confirmed RoHS/ROHS3 compliance and UL94 V-0 flammability ratings, establishing a foundation for substitution eligibility in compliant applications.

Selection between these parts depends on installation configuration:

L77SDCG37S is appropriate for applications utilizing free-hanging in-line mounting and requiring operation across the extended temperature range of -55°C to 105°C with a 3A current rating.

171-037-203L001 is appropriate for applications requiring panel-mount installation, offering an increased current rating of 5A, and operating within the -50°C to 100°C temperature range. The nickel-plated steel shell and expanded wire gauge compatibility (20-28 AWG) provide additional design flexibility.

Both connectors utilize solder cup termination, 37-position configuration with 4 (DC, C) shell size, and gold-flash contact finish, ensuring compatibility with existing wiring and mating connector interfaces.

Frequently Asked Questions (FAQ)

Q: What are the primary differences between L77SDCG37S and 171-037-203L001? A: The primary differences are mounting type (free-hanging in-line versus panel mount), current rating (3A versus 5A), operating temperature range (-55°C to 105°C versus -50°C to 100°C), and shell finish (tin-plated versus nickel-plated steel). All other critical parameters including connector configuration, shell size, and termination method remain identical.

Q: Can 171-037-203L001 replace L77SDCG37S in any application? A: Substitution is viable when the application requires panel-mount installation, the operating temperature does not fall below -50°C, and the 5A current rating meets or exceeds system requirements. If the installation requires free-hanging in-line mounting or must operate below -50°C, the L77SDCG37S remains the appropriate choice.

Q: Are the solder cup terminations compatible between these two parts? A: Yes. Both connectors utilize solder cup termination with compatible 20 AWG wire gauge specification. The 171-037-203L001 accepts wire gauges ranging from 20-28 AWG, providing broader compatibility with varying installation wire sizes.

Q: What compliance certifications do these connectors maintain? A: Both parts are RoHS/ROHS3 compliant and carry UL94 V-0 flammability ratings. The L77SDCG37S is RoHS Compliant; the 171-037-203L001 is ROHS3 Compliant. Both maintain EAR99 ECCN classification and 8536.69.8000 HTSUS code.

Q: Do these connectors mate with the same connector plugs? A: Yes. Both receptacle connectors utilize identical 37-position, 4 (DC, C) shell size D-Sub configuration, ensuring compatibility with standard male D-Sub plugs designed for this layout.