TE Connectivity AMP Connectors 2-1734282-1 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 2-1734282-1 is a 25-position D-Sub stacked connector featuring both plug (male pins) and receptacle (female sockets) configurations in a right-angle, through-hole mounting design. This connector is part of the AMPLIMITE HD-20 series and is designated as obsolete. The connector supports signal-level applications with a current rating of 1.5–3A and operates across a temperature range of –55°C to 105°C.

Due to its obsolete product status, locating equivalent substitute parts is necessary for ongoing system maintenance, repair, and new design implementations where legacy connector compatibility is required.

Key Parameters

Parameter	Value
Connector Style	D-Sub - Stacked
Number of Positions	25, 25
Number of Rows	2, 2
Shell Size, Connector Layout	3 (DB, B)
Connector Type	Plug, Male Pins; Receptacle, Female Sockets
Mounting Type	Through Hole, Right Angle
Termination	Solder
Contact Type	Signal
Current Rating (Amps)	1.5–3A
Voltage Rating	250V
Operating Temperature	–55°C to 105°C
Shell Material, Finish	Steel, Tin Plated
Contact Finish	Gold, Flash
Color	Black
Dielectric Material	Thermoplastic

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 2-1734282-1 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Connector style: D-Sub - Stacked configuration
Position count: 25 positions in 2-row arrangement
Shell size and layout: 3 (DB, B)
Connector type: Plug with male pins and receptacle with female sockets
Mounting type: Through-hole, right-angle orientation
Termination method: Solder
Contact type: Signal-level
Operating temperature range: –55°C to 105°C
Color: Black

Allowable Variations: Substitute parts may differ in shell material finish (tin plated versus nickel plated), current rating (provided the substitute meets or exceeds the original 1.5–3A specification), voltage rating specification format, dielectric material composition, and flange feature design, provided all mandatory parameters remain consistent.

The two NorComp Inc. substitute parts (178-025-413R571 and 179-025-413R571) satisfy all mandatory matching parameters and are therefore valid functional equivalents for the obsolete TE Connectivity part.

Parameter Comparison

Parameter	TE Connectivity 2-1734282-1	NorComp 178-025-413R571	NorComp 179-025-413R571
Manufacturer	TE Connectivity AMP Connectors	NorComp Inc.	NorComp Inc.
Series	AMPLIMITE HD-20	178	179
Product Status	Obsolete	Active	Active
Connector Style	D-Sub - Stacked	D-Sub - Stacked	D-Sub - Stacked
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)
Connector Type	Plug, Male Pins; Receptacle, Female Sockets	Plug, Male Pins; Receptacle, Female Sockets	Plug, Male Pins; Receptacle, Female Sockets
Mounting Type	Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle
Termination	Solder	Solder	Solder
Contact Type	Signal	Signal	Signal
Current Rating (Amps)	1.5–3A	5A	5A
Voltage Rating	250V	Not specified	Not specified
Operating Temperature	–55°C to 105°C	–55°C to 105°C	–55°C to 105°C
Shell Material, Finish	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Finish	Gold, Flash	Gold, Flash	Gold, Flash
Color	Black	Black	Black
Dielectric Material	Thermoplastic	Polyamide (PA9T), Nylon 9T	Polyamide (PA9T), Nylon 9T
RoHS Status	Not applicable	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not Applicable	Not Applicable
REACH Status	REACH Affected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Both NorComp substitute parts (178-025-413R571 and 179-025-413R571) are functionally equivalent to the obsolete TE Connectivity 2-1734282-1 based on matching connector geometry, position count, mounting configuration, and operating temperature specifications.

Compliance Advantages of Substitute Parts: The NorComp alternatives carry active product status, ensuring ongoing availability and supply chain continuity. Both substitute parts are ROHS3 compliant and REACH unaffected, providing regulatory compliance advantages over the original part, which carries REACH-affected status.

Current Rating Consideration: The NorComp substitutes provide a 5A current rating, which exceeds the original part's 1.5–3A specification. This higher rating is compatible with applications designed for the original connector and does not introduce incompatibility.

Mounting Type Differentiation: NorComp 178-025-413R571 specifies panel mount capability in addition to through-hole mounting, while NorComp 179-025-413R571 specifies board edge mounting. Both retain through-hole, right-angle orientation required for direct substitution. Selection between these two should be based on specific mounting requirements of the target application.

Shell Material Finish: The substitute parts feature nickel plating rather than tin plating. Both finishes are compatible with gold-flashed contacts and support the same signal-level application requirements.

Frequently Asked Questions (FAQ)

Q: Can NorComp 178-025-413R571 or 179-025-413R571 directly replace the TE Connectivity 2-1734282-1 in existing designs?

A: Yes. Both NorComp parts match the critical substitution parameters: 25-position D-Sub stacked configuration, shell size 3 (DB, B), plug and receptacle connector types, through-hole right-angle mounting, solder termination, and –55°C to 105°C operating temperature range. The connectors are mechanically and electrically compatible for direct substitution.

Q: What is the difference between NorComp 178-025-413R571 and 179-025-413R571?

A: The primary difference is mounting type specification. The 178-025-413R571 includes panel mount capability, while the 179-025-413R571 specifies board edge mounting. Both support through-hole, right-angle installation. Selection depends on whether the application requires panel-mount flexibility or board-edge mounting configuration.

Q: Why do the NorComp substitutes have a higher current rating (5A) than the original part (1.5–3A)?

A: The higher current rating reflects the design specifications of the NorComp connector series. A higher current rating does not create incompatibility; applications designed for 1.5–3A operation function correctly with connectors rated for 5A. The substitute part is suitable for all applications within the original current specification range.

Q: Are there any compliance differences between the original and substitute parts?

A: Yes. The NorComp substitutes are ROHS3 compliant and REACH unaffected, while the original TE Connectivity part is not RoHS applicable and carries REACH-affected status. For applications subject to RoHS or REACH regulations, the NorComp substitutes provide regulatory compliance advantages.

Q: Does the change from tin plating to nickel plating affect connector performance?

A: No. Both tin and nickel plating finishes are standard for D-Sub connectors and are compatible with gold-flashed contact surfaces. The nickel-plated finish of the NorComp substitutes provides equivalent electrical and mechanical performance for signal-level applications.

Q: What is the inventory status of the substitute parts?

A: NorComp 178-025-413R571 has 2,905 pieces in stock, and NorComp 179-025-413R571 has 1,471 pieces in stock. Both parts are active products with established supply availability, contrasting with the obsolete status of the original TE Connectivity part.

Q: Are the dielectric materials of the substitute parts compatible with the original application?

A: Yes. The NorComp substitutes use polyamide (PA9T) nylon 9T dielectric material, which is a standard thermoplastic material for D-Sub connectors. This material is compatible with the thermoplastic dielectric of the original part and supports the same operating temperature range and signal-level performance requirements.

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