FCE17B25SB68B D-Sub 25 Position Receptacle Connector Equivalent & Substitute Parts

Part Overview

The FCE17B25SB68B is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC (Commercial Products). This through-hole, right-angle solder termination connector features female sockets in a 2-row configuration with shell size 3 (DB, B) layout. The connector is actively produced and widely used in industrial and commercial applications requiring reliable signal transmission with 5A current capacity per contact.

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or when functionally compatible alternatives from other manufacturers meet the same electrical and mechanical specifications.

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, Right Angle
Termination	Solder
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold
Current Rating (Amps)	5A
Operating Temperature	-40°C ~ 85°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute parts for the FCE17B25SB68B are identified based on strict equivalence of the following critical parameters:

Mandatory Matching Parameters:

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, Right Angle
Termination: Solder
Shell Material, Finish: Steel, Tin Plated
Contact Finish: Gold
Material Flammability Rating: UL94 V-0
Contact Material: Phosphor Bronze
Color: Black

Allowable Parameter Variations: Substitute parts may differ in the following parameters while maintaining functional compatibility:

Current Rating: 5A or higher
Operating Temperature Range: Equal to or wider than -40°C ~ 85°C
Contact Finish Thickness: Variations acceptable (Flash, 15.0µin, or unspecified)
Backset Spacing: Minor variations within mechanical tolerance
Flange Feature: Board Side (M3) or Mating Side with Standard Screws
Dielectric Material: Thermoplastic Glass Filled or Polyamide (PA) Nylon Glass Filled
Packaging: Box, Tray, or unspecified
RoHS Status: Compliant or non-compliant (application-dependent)
Product Status: Active or Obsolete (inventory availability consideration)

Parameter Comparison

Parameter	FCE17B25SB68B (Main)	FCE17B25SB61B	5745440-1	5745440-4	745440-1
Manufacturer	Amphenol ICC	Amphenol ICC	TE Connectivity AMP	TE Connectivity AMP	TE Connectivity AMP
Series	FCE17	FCE17	AMPLIMITE HDP-20	AMPLIMITE HDP-20	AMPLIMITE HDP-20
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	25	25	25	25	25
Shell Size, Connector Layout	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	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
Shell Material, Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness	15.0µin (0.38µm)	15.0µin (0.38µm)	Flash	Not specified	Flash
Current Rating (Amps)	5A	5A	6A	6A	6A
Backset Spacing	0.405" (10.29mm)	0.405" (10.29mm)	0.454" (11.53mm)	0.454" (11.53mm)	0.454" (11.53mm)
Voltage Rating	Not specified	Not specified	125V	125V	125V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Dielectric Material	Thermoplastic, Glass Filled	Thermoplastic, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Thermoplastic
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Color	Black	Black	Black	Black	Black
Product Status	Active	Active	Active	Active	Obsolete
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS non-compliant
Inventory (Pcs)	829	1084	1034	958	706

Engineering Selection Recommendations

FCE17B25SB61B (Parametric Equivalent)

The FCE17B25SB61B is a parametric equivalent from Amphenol ICC within the same FCE17 series. All electrical and mechanical parameters match the FCE17B25SB68B exactly, including current rating (5A), operating temperature range (-40°C ~ 85°C), contact finish thickness (15.0µin), and backset spacing (0.405"). Both parts are RoHS Compliant and actively produced. The primary difference is packaging (Box versus unspecified). This part is the preferred direct substitute when Amphenol ICC sourcing is required or when identical specifications are mandated.

5745440-1 (TE Connectivity AMP Connectors - Active)

The 5745440-1 from TE Connectivity AMP Connectors (AMPLIMITE HDP-20 series) is functionally compatible with the FCE17B25SB68B. Key differences include higher current rating (6A versus 5A), wider operating temperature range (-55°C ~ 105°C versus -40°C ~ 85°C), specified voltage rating (125V), and different dielectric material (Polyamide Nylon Glass Filled versus Thermoplastic Glass Filled). Backset spacing differs (0.454" versus 0.405"). Contact finish is Flash rather than 15.0µin. This part is RoHS Compliant and actively produced. Selection is appropriate when TE Connectivity sourcing is preferred or when extended temperature performance is required.

5745440-4 (TE Connectivity AMP Connectors - Active)

The 5745440-4 is functionally equivalent to 5745440-1 with identical electrical and mechanical specifications. Contact finish thickness is not specified. This part is RoHS Compliant and actively produced. Selection between 5745440-1 and 5745440-4 is determined by packaging and inventory availability.

745440-1 (TE Connectivity AMP Connectors - Obsolete)

The 745440-1 is an obsolete part from TE Connectivity AMP Connectors with specifications matching the active 5745440 series variants. This part is RoHS non-compliant and no longer in active production. Selection of this part is not recommended for new designs. Use only when legacy system compatibility or existing inventory constraints require obsolete part sourcing.

Frequently Asked Questions (FAQ)

Q: Can FCE17B25SB61B be used as a direct replacement for FCE17B25SB68B?

A: Yes. The FCE17B25SB61B is a parametric equivalent with identical electrical and mechanical specifications. All critical parameters including connector type, position count, shell size, mounting configuration, current rating, operating temperature, and contact materials match exactly. The only difference is packaging format (Box versus unspecified).

Q: What are the key differences between Amphenol ICC FCE17 series and TE Connectivity AMPLIMITE HDP-20 series substitutes?

A: The primary differences are backset spacing (0.405" for FCE17 versus 0.454" for AMPLIMITE HDP-20), dielectric material composition (Thermoplastic Glass Filled versus Polyamide Nylon Glass Filled), current rating (5A versus 6A), and operating temperature range (-40°C ~ 85°C versus -55°C ~ 105°C). Flange feature configuration also differs (Board Side M3 versus Mating Side Standard Screws). These differences may affect PCB layout and mechanical mounting considerations.

Q: Are TE Connectivity 5745440-1 and 5745440-4 interchangeable?

A: Yes. Both parts are functionally equivalent with identical electrical and mechanical specifications. The difference is contact finish thickness specification (Flash for 5745440-1 versus unspecified for 5745440-4). Selection between these parts is determined by packaging format and inventory availability rather than technical performance.

Q: Can the obsolete 745440-1 be used in new designs?

A: The 745440-1 is RoHS non-compliant and obsolete. Use in new designs is not recommended unless legacy system compatibility or existing inventory constraints specifically require this part. For all new applications, select from active parts: FCE17B25SB61B, 5745440-1, or 5745440-4.

Q: What is the impact of different backset spacing between FCE17B25SB68B (0.405") and TE Connectivity substitutes (0.454")?

A: Backset spacing determines the distance from the mounting flange to the rear of the connector body. The 0.049" (1.24mm) difference affects PCB layout and mechanical clearance behind the connector. Designs must accommodate this spacing variation. Verify PCB cutout dimensions and component placement clearance before substituting between these part families.

Q: Are all substitute parts RoHS Compliant?

A: FCE17B25SB61B, 5745440-1, and 5745440-4 are RoHS Compliant. The obsolete 745440-1 is RoHS non-compliant. For applications requiring RoHS compliance, select from the three compliant alternatives.

Q: What is the significance of the 6A current rating on TE Connectivity parts versus 5A on Amphenol ICC parts?

A: The higher 6A rating on TE Connectivity AMPLIMITE HDP-20 series indicates greater current-carrying capacity per contact. This provides additional design margin for applications approaching the 5A limit. However, the 5A rating on FCE17B25SB68B and FCE17B25SB61B is sufficient for applications designed to this specification. Selection based on current rating should align with actual circuit requirements.

Q: How does the extended operating temperature range (-55°C ~ 105°C) of TE Connectivity parts affect substitution decisions?

A: TE Connectivity AMPLIMITE HDP-20 series parts operate across a wider temperature range than FCE17B25SB68B (-40°C ~ 85°C). For applications operating within the FCE17 range, both part families are suitable. For applications requiring extended low-temperature (-55°C) or high-temperature (above 85°C) operation, TE Connectivity substitutes are required.

Q: What packaging formats are available for these substitute parts?

A: FCE17B25SB68B packaging is unspecified. FCE17B25SB61B is supplied in Box packaging. TE Connectivity 5745440-1 and 5745440-4 are supplied in Tray packaging. The obsolete 745440-1 packaging is unspecified. Packaging selection affects handling, storage, and integration into assembly processes.

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