FCC17-B25SE-A50 Equivalent & Substitute Parts

Part Overview

The FCC17-B25SE-A50 is a 25-position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole solder-terminated connector features female sockets with a board-side flange and is designed for signal applications. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing procurement and system maintenance. The connector is constructed with a steel tin-plated shell, gold-plated phosphor bronze contacts, and thermoplastic dielectric material rated UL94 V-0.

Key Parameters

Parameter	Value
Connector Style	D-Sub
Connector Type	Receptacle, Female Sockets
Number of Positions	25
Number of Rows	2
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Through Hole
Termination	Solder
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Contact Material	Phosphor Bronze
Flange Feature	Board Side (4-40)
Current Rating (Amps)	5A
Voltage Rating	200V
Operating Temperature	-40°C ~ 85°C
Material Flammability Rating	UL94 V-0
Contact Type	Signal
Features	Board Lock, Filter

Substitute Part Grouping Explanation

Substitution of the FCC17-B25SE-A50 is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Connector style (D-Sub)
Connector type (Receptacle, Female Sockets)
Number of positions (25)
Number of rows (2)
Shell size and layout (3 / DB, B)
Mounting type (Through Hole)
Termination method (Solder)
Flange feature (Board Side with 4-40 mounting)
Contact type (Signal)
Material flammability rating (UL94 V-0)

Secondary Compatibility Parameters:

Shell material and finish (Steel, Tin Plated or equivalent)
Contact finish (Gold)
Contact material (Phosphor Bronze or Brass)
Operating temperature range (minimum -40°C to 85°C)
Current rating (5A or greater)
Voltage rating (200V or greater, where specified)

Substitute parts must maintain mechanical and electrical compatibility with the original connector footprint and circuit requirements. Variations in dielectric material composition, contact finish thickness, and packaging format do not affect functional substitution when all primary criteria are met.

Parameter Comparison

Parameter	FCC17-B25SE-A50	FCE17-B25SE-A50	5745886-1	5745886-2	628-025-220-047	628-025-221-042
Manufacturer	Amphenol ICC	Amphenol ICC	TE Connectivity AMP	TE Connectivity AMP	Mercury United Electronics	Mercury United Electronics
Product Status	Obsolete	Active	Active	Active	Active	Active
Connector Type	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
Number of Rows	2	2	2	2	2	2
Shell Size, Connector Layout	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Panel Mount, Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass	Phosphor Bronze
Flange Feature	Board Side (4-40)	Board Side (4-40)	Board Side (4-40)	Board Side (4-40)	Board Side (4-40)	Board Side (4-40)
Current Rating (Amps)	5A	5A	6A	6A	3A per Contact	5A
Voltage Rating	200V	Not Specified	125V	125V	Not Specified	Not Specified
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 85°C	-55°C ~ 85°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Contact Type	Signal	Signal	Signal	Signal	Signal	Signal
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

FCE17-B25SE-A50 (Amphenol ICC)

This substitute is the direct active-production equivalent from the same manufacturer. It maintains identical mechanical and electrical specifications to the FCC17-B25SE-A50, including 25-position configuration, through-hole solder termination, board-side flange, and operating temperature range of -40°C to 85°C. The FCE17-B25SE-A50 is RoHS Compliant, addressing regulatory requirements that the original obsolete part does not meet. This part is recommended as the primary substitute for direct replacement applications.

5745886-1 and 5745886-2 (TE Connectivity AMP Connectors, AMPLIMITE HD-20 Series)

These TE Connectivity parts provide functional equivalence with enhanced electrical performance. Both parts support 6A current rating compared to the original 5A specification, and operate across an extended temperature range of -55°C to 105°C. The voltage rating is specified at 125V, which is lower than the original 200V specification. These parts are RoHS Compliant and suitable for applications where the lower voltage rating is acceptable and extended temperature performance is beneficial. The AMPLIMITE HD-20 series uses polyamide (PA) nylon dielectric material instead of thermoplastic.

628-025-220-047 (Mercury United Electronics, 628 Metal Series)

This substitute maintains 25-position D-Sub receptacle configuration with through-hole solder termination and board-side flange. The part features nickel-plated steel shell and brass contacts with gold finish. Current rating is specified at 3A per contact, which is lower than the original 5A specification. This part is ROHS3 Compliant and includes board lock and shielded features. Selection of this part requires verification that the 3A per contact current rating is sufficient for the application.

628-025-221-042 (Mercury United Electronics, 628 Series)

This substitute provides 25-position D-Sub receptacle configuration with panel mount and through-hole mounting options. It maintains 5A current rating equivalent to the original part and features nickel-plated steel shell with phosphor bronze contacts. The part is ROHS3 Compliant and includes shielded features. Operating temperature range is -55°C to 85°C. This part is suitable for applications requiring panel-mount capability in addition to through-hole termination.

Frequently Asked Questions (FAQ)

Q: Can the FCE17-B25SE-A50 be used as a direct replacement for the FCC17-B25SE-A50?

A: Yes. The FCE17-B25SE-A50 maintains identical mechanical and electrical specifications including 25-position configuration, through-hole solder termination, board-side flange mounting, and operating temperature range. The primary difference is product status (active versus obsolete) and RoHS compliance. No design modifications are required for substitution.

Q: What is the significance of the voltage rating difference between the FCC17-B25SE-A50 (200V) and the TE Connectivity alternatives (125V)?

A: The voltage rating indicates the maximum voltage the connector can safely withstand. The original part is rated for 200V, while the TE Connectivity 5745886-1 and 5745886-2 are rated for 125V. If your application operates at voltages exceeding 125V, these TE Connectivity parts are not suitable substitutes. If your application operates at 125V or below, these parts are acceptable.

Q: How does the current rating difference affect part selection?

A: The FCC17-B25SE-A50 is rated for 5A total current. The TE Connectivity alternatives (5745886-1 and 5745886-2) support 6A, providing additional current capacity. The Mercury 628-025-220-047 is rated at 3A per contact, which is lower than the original specification. Selection depends on your application's current requirements. If your design requires 5A or greater, the TE Connectivity parts or FCE17-B25SE-A50 are appropriate. If your design requires 3A or less, the Mercury 628-025-220-047 is acceptable.

Q: What is the difference between the Mercury 628-025-220-047 and 628-025-221-042?

A: Both parts are 25-position D-Sub receptacles from Mercury United Electronics. The 628-025-220-047 is through-hole only with 3A per contact current rating. The 628-025-221-042 supports both panel mount and through-hole mounting with 5A current rating. Selection depends on whether panel-mount capability is required and whether the 3A or 5A current rating matches your application requirements.

Q: Are there RoHS compliance considerations for substitution?

A: Yes. The original FCC17-B25SE-A50 is RoHS non-compliant. All substitute parts listed (FCE17-B25SE-A50, 5745886-1, 5745886-2, 628-025-220-047, and 628-025-221-042) are RoHS Compliant or ROHS3 Compliant. If your application or supply chain requires RoHS compliance, any of these substitutes addresses this requirement.

Q: What is the difference between tin-plated and nickel-plated shell finishes?

A: The original FCC17-B25SE-A50 features a steel tin-plated shell. The Mercury alternatives (628-025-220-047 and 628-025-221-042) feature steel nickel-plated shells. Both finishes provide corrosion resistance and are suitable for standard environmental conditions. The choice between them depends on specific application requirements and environmental exposure. Both finishes are compatible with gold-plated contacts.

Q: Can I use the TE Connectivity parts in applications requiring the extended temperature range?

A: Yes. The TE Connectivity 5745886-1 and 5745886-2 operate across -55°C to 105°C, which exceeds the original part's -40°C to 85°C range. If your application requires operation at temperatures below -40°C or above 85°C, these TE Connectivity parts provide extended capability. The Mercury alternatives operate at -55°C to 85°C, providing lower temperature capability but not exceeding the upper temperature limit of the original part.

Q: What does "Board Lock" feature mean?

A: Board Lock is a mechanical feature that secures the connector to the printed circuit board, preventing accidental disconnection or movement during handling or vibration. The original FCC17-B25SE-A50 includes this feature. The FCE17-B25SE-A50 also includes Board Lock. The TE Connectivity parts do not specify this feature. The Mercury 628-025-220-047 includes Board Lock; the 628-025-221-042 does not specify this feature. If Board Lock is required for your application, verify this feature is present in your selected substitute.

Q: What does "Filter" feature mean on the original part?

A: Filter refers to integrated electromagnetic interference (EMI) filtering capability within the connector. The original FCC17-B25SE-A50 includes this feature. None of the listed substitute parts specify integrated filter capability. If EMI filtering is required, external filtering components may be necessary when using substitute parts, or alternative connectors with integrated filtering should be evaluated.

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