FCE17C37SC4DB D-Sub Receptacle 37-Position Connector

Part Overview

The FCE17C37SC4DB is a 37-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This connector features female sockets in a right-angle, through-hole solder termination configuration with a board-side flange. The part is currently active in production with 965 units in stock.

D-Sub connectors of this type are essential in applications requiring standardized, high-density signal interconnection. Equivalent and substitute parts become necessary when addressing supply chain constraints, design revisions, or specific performance requirements that alternative manufacturers can fulfill while maintaining functional compatibility.

Substiute Parts

FCE17C37SC4DB

Amphenol ICC (Commercial Products)In Stock: 1059FCE17C37SC4DB Datasheet

Current PartRFQ

5745996-4

TE Connectivity AMP ConnectorsIn Stock: 11325745996-4 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FCE17C37SC4DB is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Connector Style: D-Sub
• Connector Type: Receptacle, Female Sockets
• Number of Positions: 37
• Number of Rows: 2
• Shell Size, Connector Layout: 4 (DC, C)
• Mounting Type: Through Hole, Right Angle
• Termination: Solder
• Backset Spacing: 0.590" (14.99mm)
• Shell Material, Finish: Steel, Tin Plated
• Contact Material: Phosphor Bronze
• Contact Finish: Gold

Allowable Variation Parameters:

• Current Rating: May exceed the main part specification
• Operating Temperature Range: May exceed the main part specification
• Contact Finish Thickness: May exceed the main part specification
• Voltage Rating: May be specified in substitute when not specified in main part
• Flange Feature: May differ (board-side versus housing/shell) while maintaining 4-40 mounting compatibility

The substitute part 5745996-4 (TE Connectivity AMP Connectors, AMPLIMITE HD-20 series) meets all mandatory matching criteria and provides enhanced performance specifications in current rating, operating temperature range, and contact finish thickness.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 5745996-4 (TE Connectivity AMP Connectors)

The 5745996-4 connector is a direct functional substitute for the FCE17C37SC4DB. Both connectors are active products with RoHS compliance and identical core specifications across connector style, type, position count, shell size, mounting configuration, and termination method.

The substitute part provides enhanced performance characteristics:

• Current rating increased from 5A to 6A
• Operating temperature range expanded from -40°C to 85°C to -55°C to 105°C
• Contact finish thickness doubled from 15.0µin to 30.0µin
• Voltage rating specified at 125V

Both connectors maintain UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity classification. The flange feature differs (board-side versus housing/shell), but both utilize 4-40 mounting specifications, maintaining mechanical compatibility in standard PCB applications.

Selection between these parts should be based on application-specific requirements for current capacity, temperature extremes, and environmental conditions. The substitute part is suitable for applications requiring enhanced thermal or electrical performance margins.

Frequently Asked Questions (FAQ)

Q: Can the 5745996-4 be used as a direct replacement for the FCE17C37SC4DB in existing designs?

A: Yes. Both connectors share identical specifications for connector style, type, position count, shell size, mounting type, termination method, and backset spacing. The 5745996-4 provides equivalent or superior performance across all electrical and thermal parameters. The flange feature differs (board-side versus housing/shell), but both maintain 4-40 mounting compatibility for standard PCB applications.

Q: What is the significance of the contact finish thickness difference?

A: The 5745996-4 provides 30.0µin (0.76µm) gold plating compared to 15.0µin (0.38µm) on the FCE17C37SC4DB. Thicker gold plating provides enhanced durability and corrosion resistance, particularly in applications with frequent mating cycles or harsh environmental exposure. This represents an improvement over the original specification.

Q: Are there any compliance or certification differences between these connectors?

A: No. Both connectors are RoHS compliant, carry UL94 V-0 flammability rating, and maintain MSL 1 (Unlimited) moisture sensitivity classification. Both are active products from established manufacturers. Compliance and certification status are equivalent.

Q: What is the difference between board-side and housing/shell flange features?

A: The FCE17C37SC4DB features a board-side flange, while the 5745996-4 features a housing/shell flange. Both utilize 4-40 mounting specifications. The flange location affects mounting orientation and mechanical interface design. Verify PCB layout and mounting hole positioning before substitution to ensure compatibility with existing mechanical designs.

Q: Does the expanded operating temperature range of the 5745996-4 affect compatibility?

A: No. The expanded range (-55°C to 105°C versus -40°C to 85°C) represents enhanced capability. Applications operating within the original temperature range of the FCE17C37SC4DB will function identically with the 5745996-4. The substitute is suitable for applications requiring extended temperature performance.

Q: Is the increased current rating of the 5745996-4 (6A versus 5A) significant for substitution?

A: The increased current rating provides additional performance margin. Applications designed for 5A operation will function within the 6A rating of the substitute. The higher rating does not create incompatibility; it represents enhanced electrical capacity. Verify that circuit design does not depend on current-limiting characteristics of the original 5A specification.

Q: What inventory considerations apply to these connectors?

A: The FCE17C37SC4DB has 965 units in stock (Amphenol ICC). The 5745996-4 has 1030 units in stock (TE Connectivity). Both are active products with established supply availability. Selection may be influenced by supply chain requirements, lead times, or procurement preferences.