FCE17B25SC240 D-Sub Receptacle Equivalent & Substitute Parts

Part Overview

The FCE17B25SC240 is a 25-position D-Sub receptacle connector manufactured by Amphenol ICC, featuring female sockets with right-angle solder termination. This connector is designed for through-hole PCB mounting applications requiring signal transmission in industrial and commercial environments. The part maintains active product status with 773 units in current inventory.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative manufacturers offer improved lead times, or when design requirements permit functional alternatives that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	FCE17B25SC240 Specification
Connector Type	D-Sub Receptacle, Female Sockets
Number of Positions	25
Shell Size	3 (DB, B)
Mounting Type	Through Hole, Right Angle
Termination Method	Solder
Current Rating	5A
Operating Temperature Range	-40°C to 85°C
Shell Material & Finish	Steel, Tin Plated
Contact Material	Phosphor Bronze
Contact Finish	Gold (15.0µin / 0.38µm)
Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the FCE17B25SC240 is determined by strict equivalence across the following critical parameters:

Core Compatibility Parameters:

Connector type: Receptacle, Female Sockets (mandatory match)
Number of positions: 25 (mandatory match)
Shell size: 3 (DB, B) (mandatory match)
Mounting type: Through Hole, Right Angle (mandatory match)
Termination: Solder (mandatory match)
Backset spacing: 0.590" / 14.99mm (mandatory match)

Electrical Parameters:

Current rating: 5A minimum (substitute may exceed)
Operating temperature: Must encompass or exceed -40°C to 85°C range
Flammability rating: UL94 V-0 (mandatory match)

Material & Finish Parameters:

Shell material: Steel (mandatory match)
Contact finish: Gold (mandatory match)
Dielectric material: Thermoplastic or equivalent (mandatory match)

The identified substitute parts meet these core parameters while permitting variations in contact finish thickness, shell finish (tin or nickel plating), flange features, and additional features such as ground straps, provided the fundamental electrical and mechanical characteristics remain equivalent.

Parameter Comparison

Parameter	FCE17B25SC240 (Amphenol ICC)	183-025-213R571 (NorComp)	5747838-3 (TE Connectivity)	5747838-4 (TE Connectivity)	5747838-6 (TE Connectivity)	747838-3 (TE Connectivity)	747838-4 (TE Connectivity)
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	25	25	25	25	25	25	25
Shell Size	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Current Rating (Amps)	5A	5A	6A	6A	6A	6A	6A
Operating Temperature	-40°C to 85°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Shell Material	Steel	Steel	Steel	Steel	Steel	Steel	Steel
Shell Finish	Tin Plated	Nickel Plated	Tin Plated	Tin Plated	Tin Plated	Tin Plated	Tin Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Material	Phosphor Bronze	Brass	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS non-compliant	RoHS Compliant
Backset Spacing	0.590" (14.99mm)	0.590" (14.99mm)	0.590" (14.99mm)	0.590" (14.99mm)	0.590" (14.99mm)	0.590" (14.99mm)	0.590" (14.99mm)

Engineering Selection Recommendations

Primary Substitutes (Full Compliance):

The TE Connectivity AMPLIMITE HD-20 series parts 5747838-4 and 5747838-3 provide direct functional equivalence to the FCE17B25SC240. Both parts maintain RoHS compliance, UL94 V-0 flammability rating, and exceed the minimum current rating at 6A. The operating temperature range of -55°C to 105°C encompasses the FCE17B25SC240 specification. Part 5747838-4 offers enhanced contact finish thickness at 30.0µin (0.76µm) compared to the original 15.0µin specification.

Secondary Substitute (Compliance Consideration):

The NorComp 183-025-213R571 meets all core electrical and mechanical parameters with ROHS3 compliance and extended operating temperature range. The nickel-plated shell finish differs from the tin-plated original, and the brass contact material differs from phosphor bronze. This part is suitable for applications where ROHS3 compliance is required.

Non-Recommended Substitute:

The TE Connectivity 747838-3 is RoHS non-compliant and should not be selected for applications requiring RoHS compliance certification.

Flange Feature Consideration:

The TE Connectivity 5747838-6 incorporates a female screwlock feature on the mating side, providing enhanced mechanical retention compared to standard housing/shell flanges. This variant is suitable for applications requiring positive mating force control.

Frequently Asked Questions (FAQ)

Q: Can the FCE17B25SC240 be directly replaced with the NorComp 183-025-213R571?

A: The NorComp part meets all core substitution parameters: 25-position D-Sub receptacle, right-angle solder termination, through-hole mounting, and identical backset spacing. The nickel-plated shell finish and brass contact material represent material variations that do not affect electrical compatibility. Selection depends on compliance requirements and application-specific material specifications.

Q: What is the difference between the TE Connectivity 5747838-4 and 747838-4 parts?

A: Both parts are AMPLIMITE HD-20 series 25-position D-Sub receptacles with identical electrical and mechanical specifications. The primary difference is RoHS compliance status: 5747838-4 is RoHS Compliant, while 747838-4 is RoHS Compliant. Both feature 6A current rating and 30.0µin gold contact finish thickness.

Q: Does the higher current rating of substitute parts (6A vs. 5A) affect compatibility?

A: No. A higher current rating indicates the substitute part can safely handle greater electrical load. The FCE17B25SC240 application will operate within the substitute part's electrical envelope. This represents a design margin improvement.

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

A: The FCE17B25SC240 specifies 15.0µin (0.38µm) gold finish thickness. Substitute parts with 30.0µin (0.76µm) or flash thickness provide equivalent or enhanced contact durability. Flash thickness is sufficient for signal-level applications and represents cost optimization.

Q: Are the TE Connectivity AMPLIMITE HD-20 series parts (5747838 and 747838 base numbers) interchangeable?

A: The 5747838 and 747838 series share identical mechanical and electrical specifications. The primary distinction is RoHS compliance status. Both series are suitable for the FCE17B25SC240 application, with selection based on regulatory requirements.

Q: What does the flange feature designation mean for part 5747838-6?

A: The 5747838-6 incorporates a female screwlock feature on the mating side with 4-40 threaded holes. This provides positive mechanical locking between mating connectors, preventing accidental disconnection. Standard parts (5747838-3, 5747838-4) use unthreaded housing/shell flanges.

Q: Can packaging format (tube vs. tray) affect part selection?

A: Packaging format does not affect electrical or mechanical compatibility. Selection between tube packaging (TE Connectivity parts) and tray packaging (NorComp part) depends on assembly process requirements, inventory management, and handling procedures.

Q: Is the extended operating temperature range of substitute parts (-55°C to 105°C) a requirement for compatibility?

A: No. The extended temperature range represents a design margin improvement over the FCE17B25SC240 specification (-40°C to 85°C). Substitute parts with wider temperature ranges are fully compatible with applications designed for the original temperature specification.

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