TE Connectivity 1-1634224-2 D-Sub 25 Position Receptacle Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1-1634224-2 is a 25 Position D-Sub Receptacle connector with female sockets, vertical through-hole mounting, and solder termination. This connector belongs to the AMPLIMITE HD-20 series and features a nickel-plated steel shell with gold-plated contacts. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility for D-Sub connector applications requiring 25-position receptacle configurations.

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, Nickel Plated
Contact Finish	Gold
Material Flammability Rating	UL94 V-0
Current Rating (Amps)	3A
Voltage Rating	250V
Operating Temperature	-55°C ~ 105°C
Contact Material	Phosphor Bronze

Substitute Part Grouping Explanation

Substitution of the 1-1634224-2 is determined by strict equivalence across the following critical parameters: connector style (D-Sub), connector type (receptacle with female sockets), number of positions (25), number of rows (2), shell size layout (3/DB/B), mounting type (through hole), and termination method (solder). All substitute parts listed maintain these core specifications.

Substitute parts are grouped into two categories based on functional compatibility:

Direct Equivalents (Active Status): Parts that maintain identical or superior electrical and mechanical specifications with active product status, enabling direct replacement without design modification.

Functional Equivalents (Active Status): Parts that satisfy core D-Sub 25-position receptacle requirements with variations in secondary parameters such as flange feature type, shell finish, contact finish thickness, or dielectric material composition. These parts are functionally compatible within the D-Sub 25-position receptacle category.

The following parameters determine substitution eligibility: connector style, connector type, number of positions, number of rows, shell size layout, mounting type, and termination method. Variations in current rating, voltage rating, shell finish material, contact finish thickness, flange feature design, and dielectric material are permitted within the scope of D-Sub 25-position receptacle substitution.

Parameter Comparison

Parameter	1-1634224-2	2301841-1	628-025-222-048	D25S24A6RL22LF	D25S24A6RV22LF	D25S24A6RX22LF	FCE17-B25SE-A50
Manufacturer	TE Connectivity AMP	TE Connectivity AMP	Mercury United Electronics	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (Commercial)
Connector Style	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub	D-Sub
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
Number of Rows	2	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)	3 (DB, B)
Mounting Type	Through Hole	Through Hole	Free Hanging (In-Line)	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder Cup	Solder Paste	Solder Paste	Solder Paste	Solder
Shell Material, Finish	Steel, Nickel Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Tin Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness	15.0µin (0.38µm)	15.0µin (0.38µm)	Flash	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	15.0µin (0.38µm)
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	3A	1.5A per Contact	3A per Contact	5A per Contact	5A per Contact	5A per Contact	5A
Voltage Rating	250V	250VAC	Not Specified	300V	300V	300V	Not Specified
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 85°C	-55°C	-55°C	-55°C	-40°C ~ 85°C
Contact Material	Phosphor Bronze	Phosphor Bronze	Brass	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	Not Specified	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

The TE Connectivity 2301841-1 is the primary substitute for the obsolete 1-1634224-2. Both parts are manufactured by TE Connectivity AMP Connectors within the AMPLIMITE HD-20 series, maintaining identical core specifications: 25-position D-Sub receptacle, female sockets, through-hole mounting, and solder termination. The 2301841-1 is active product status with RoHS Compliant certification. The primary difference is shell finish (tin plated versus nickel plated) and current rating (1.5A per contact versus 3A). The 2301841-1 is packaged in Tray format with 3508 units in stock.

Secondary Recommendations for Functional Equivalence:

The Amphenol ICC (FCI) Delta D series parts D25S24A6RV22LF, D25S24A6RX22LF, and D25S24A6RL22LF provide functional equivalence with enhanced electrical performance. These parts maintain 25-position D-Sub receptacle configuration with through-hole mounting and nickel-plated steel shells. All three parts feature solder paste termination, higher current ratings (5A per contact), and higher voltage ratings (300V). These parts are RoHS Compliant and active product status. The D25S24A6RV22LF and D25S24A6RX22LF are packaged in Tape & Reel format with 924 and 720 units in stock respectively.

The Amphenol ICC (Commercial Products) FCE17-B25SE-A50 provides functional equivalence with board lock and filter features. This part maintains 25-position D-Sub receptacle configuration with through-hole mounting, solder termination, and 5A current rating. The FCE17-B25SE-A50 is RoHS Compliant, active product status, and packaged in Tray format with 1047 units in stock.

Conditional Recommendation:

The Mercury United Electronics 628-025-222-048 provides functional equivalence for applications where free-hanging (in-line) mounting is acceptable. This part maintains 25-position D-Sub receptacle configuration with solder cup termination and 3A per contact current rating. The 628-025-222-048 is ROHS3 Compliant and active product status. Note that mounting type differs from the original part (free hanging versus through hole).

All substitute parts maintain UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity level, consistent with the original part specifications.

Frequently Asked Questions (FAQ)

Q: Can the 2301841-1 directly replace the 1-1634224-2 in existing designs?

A: The 2301841-1 is the direct substitute from TE Connectivity AMP Connectors. Both parts share identical core specifications: 25-position D-Sub receptacle, female sockets, through-hole mounting, and solder termination. The 2301841-1 is active product status, addressing the obsolescence of the 1-1634224-2. Shell finish differs (tin plated versus nickel plated), and current rating is lower (1.5A per contact versus 3A). Verify current requirements for your application before selection.

Q: What is the difference between solder and solder paste termination?

A: Solder termination (1-1634224-2, 2301841-1, FCE17-B25SE-A50) uses traditional wave soldering or hand soldering methods. Solder paste termination (D25S24A6RV22LF, D25S24A6RX22LF, D25S24A6RL22LF) is designed for reflow soldering processes in automated assembly. Both termination methods achieve equivalent electrical connections. Selection depends on manufacturing process compatibility.

Q: Are the Amphenol ICC Delta D series parts (D25S24A6RV22LF, D25S24A6RX22LF, D25S24A6RL22LF) compatible with the original 1-1634224-2?

A: Yes, these parts are functionally compatible as 25-position D-Sub receptacles with through-hole mounting. All three parts maintain identical connector style, type, position count, row configuration, and shell size layout. Differences include termination method (solder paste versus solder), higher current ratings (5A per contact versus 3A), higher voltage ratings (300V versus 250V), and different dielectric materials. These parts are suitable for applications requiring enhanced electrical performance.

Q: What is the significance of the flange feature differences?

A: Flange features determine mounting interface type. The 1-1634224-2 uses Housing/Shell (4-40) flange. The 2301841-1 uses Board Side (4-40) flange. The D25S24A6RV22LF uses Mating Side, Female Screwlock (4-40) flange. The D25S24A6RX22LF and D25S24A6RL22LF use Housing/Shell (M3) and Housing/Shell (4-40) flanges respectively. Flange feature selection depends on mechanical mounting requirements in your application. Verify flange compatibility with your PCB or mounting structure.

Q: Why do some substitute parts have higher current ratings?

A: Current rating differences reflect design variations in contact material, contact geometry, and dielectric material composition. The Amphenol ICC Delta D series parts (5A per contact) use Copper Alloy contacts and Liquid Crystal Polymer (LCP) dielectric material, compared to Phosphor Bronze contacts and Thermoplastic dielectric in the original part. Higher current ratings indicate enhanced electrical performance capability. Applications requiring only 3A operation can use any substitute part without derating.

Q: Is the 628-025-222-048 from Mercury United Electronics suitable for through-hole PCB mounting?

A: The 628-025-222-048 uses Free Hanging (In-Line) mounting type, not through-hole mounting. This part is designed for wire harness or cable assembly applications where the connector is suspended in-line rather than mounted to a PCB. The 628-025-222-048 is not recommended as a direct replacement for through-hole PCB mounting applications. Select through-hole mounting alternatives (2301841-1, D25S24A6RV22LF, D25S24A6RX22LF, D25S24A6RL22LF, or FCE17-B25SE-A50) for PCB applications.

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

A: Shell finish affects corrosion resistance and environmental performance. Nickel plating (1-1634224-2, 628-025-222-048, D25S24A6RV22LF, D25S24A6RX22LF, D25S24A6RL22LF) provides superior corrosion resistance in harsh environments. Tin plating (2301841-1, FCE17-B25SE-A50) offers adequate corrosion resistance for standard industrial applications. Both finishes maintain electrical conductivity and mechanical durability. Selection depends on environmental exposure requirements.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are RoHS Compliant or ROHS3 Compliant. The 2301841-1, D25S24A6RV22LF, D25S24A6RX22LF, D25S24A6RL22LF, and FCE17-B25SE-A50 are RoHS Compliant. The 628-025-222-048 is ROHS3 Compliant. All parts meet RoHS requirements for restricted substance elimination. The original 1-1634224-2 does not specify RoHS status.

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

A: Packaging varies by part number. The 2301841-1 and FCE17-B25SE-A50 are packaged in Tray format. The D25S24A6RV22LF, D25S24A6RX22LF, and D25S24A6RL22LF are packaged in Tape & Reel (TR) format. The 628-025-222-048 is packaged in Tray format. Tape & Reel packaging is suitable for automated assembly processes. Tray packaging is suitable for manual assembly or lower-volume applications. Select packaging format based on manufacturing process requirements.

Q: What is the operating temperature range for each substitute part?

A: Operating temperature ranges vary. The 1-1634224-2 and 2301841-1 support -55°C to 105°C. The 628-025-222-048 supports -55°C to 85°C. The D25S24A6RV22LF, D25S24A6RX22LF, and D25S24A6RL22LF support -55°C minimum (upper limit not specified). The FCE17-B25SE-A50 supports -40°C to 85°C. Applications requiring operation above 85°C should select the 1-1634224-2 or 2301841-1. Applications with lower temperature requirements can use any substitute part.

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