TE Connectivity 788752-2 D-Sub Receptacle Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 788752-2 is a 25 Position D-Sub Receptacle connector with female sockets, right-angle solder termination, and through-hole mounting. This connector is classified as obsolete product status. The AMPLIMITE HD-20 series connector features a nickel-plated steel shell with gold-plated contacts and board lock functionality. Due to its obsolete classification, equivalent and substitute parts from active manufacturers are necessary for new designs, production continuity, and long-term component availability.

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, Nickel Plated
Contact Finish	Gold
Backset Spacing	0.318" (8.08mm)
Flange Feature	Housing/Shell (4-40)
Material Flammability Rating	UL94 V-0
Color	Black
Dielectric Material	Polybutylene Terephthalate (PBT)
Contact Material	Phosphor Bronze

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 788752-2 is determined by strict alignment of the following critical parameters:

Core Substitution Criteria:

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, Nickel Plated
Contact Finish: Gold
Backset Spacing: 0.318" (8.08mm)
Material Flammability Rating: UL94 V-0
Color: Black

Substitute parts are grouped into two categories based on flange feature configuration:

Group 1: Housing/Shell Flange (4-40) — Direct functional equivalents with identical mounting interface. Includes NorComp 182-025-213R161 and Mercury United Electronics 622-025-260-032, 622-025-260-042, 622-025-268-032, 622-025-660-042, and 622-025-668-032.

Group 2: Mating Side Female Screwlock (4-40) — Functionally equivalent with alternative mating interface. Includes NorComp 182-025-213R181 and 182-025-213R561, and Mercury United Electronics 622-025-260-033 and 622-025-260-043.

All substitute parts maintain the required 25-position, 2-row D-Sub configuration with solder termination and through-hole right-angle mounting. Variations in dielectric material (Polyamide PA9T versus Polyester Thermoplastic), contact material composition, and packaging format do not affect core electrical and mechanical compatibility within the D-Sub receptacle category.

Parameter Comparison

Parameter	TE Connectivity 788752-2	NorComp 182-025-213R161	NorComp 182-025-213R181	NorComp 182-025-213R561	Mercury 622-025-260-032	Mercury 622-025-260-042	Mercury 622-025-260-033	Mercury 622-025-260-043	Mercury 622-025-268-032	Mercury 622-025-660-042	Mercury 622-025-668-032
Connector Style	D-Sub	D-Sub	D-Sub	D-Sub	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	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	25	25	25	25	25	25	25	25	25	25	25
Number of Rows	2	2	2	2	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)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Panel Mount, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle	Board Edge, Through Hole, Right Angle
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shell Material, Finish	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Backset Spacing	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)	0.318" (8.08mm)
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Color	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black	Black
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Product Status Consideration: The TE Connectivity 788752-2 carries obsolete product status, indicating discontinued manufacturing and limited long-term availability. All listed substitute parts maintain active product status from NorComp Inc. and Mercury United Electronics, Inc., ensuring ongoing supply chain access and manufacturing support.

Compliance and Certification: The original TE Connectivity 788752-2 is RoHS non-compliant. All substitute parts listed are ROHS3 compliant, meeting current regulatory requirements for new equipment designs and applications subject to RoHS directives. All substitute parts maintain UL94 V-0 material flammability rating and EAR99 ECCN classification consistent with the original part.

Functional Equivalence: All substitute parts satisfy the core D-Sub receptacle requirements: 25-position, 2-row configuration; Shell Size 3 (DB, B); through-hole right-angle solder termination; nickel-plated steel shell; and gold-plated contacts. Substitution is mechanically and electrically valid across all listed alternatives.

Flange Feature Selection: For direct replacement in existing designs with Housing/Shell (4-40) flange mounting, select from NorComp 182-025-213R161 or Mercury United Electronics 622-025-260-032, 622-025-260-042, 622-025-268-032, 622-025-660-042, or 622-025-668-032.

For designs requiring Mating Side Female Screwlock (4-40) interface, select from NorComp 182-025-213R181, 182-025-213R561, or Mercury United Electronics 622-025-260-033, 622-025-260-043.

Inventory Availability: Mercury United Electronics 622-025-668-032 offers the highest inventory level (1,011 pieces) among substitute options with Housing/Shell flange configuration. NorComp 182-025-213R561 provides maximum availability (10,117 pieces) for Mating Side Screwlock configuration.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 788752-2 be directly replaced with any of the listed substitute parts?

A: Yes. All listed substitute parts maintain identical core specifications: 25-position D-Sub receptacle, 2-row configuration, Shell Size 3 (DB, B), through-hole right-angle solder termination, nickel-plated steel shell, and gold-plated contacts. Selection depends on flange feature requirements (Housing/Shell versus Mating Side Screwlock) and mounting interface compatibility with your application.

Q: What is the difference between Housing/Shell (4-40) and Mating Side Female Screwlock (4-40) flange features?

A: Housing/Shell (4-40) flange features mounting holes on the connector shell body for board-level or panel mounting. Mating Side Female Screwlock (4-40) provides threaded receptacles on the mating face for cable connector retention. Selection depends on your mechanical assembly requirements and mating connector type.

Q: Are the NorComp and Mercury substitute parts electrically compatible with the original TE Connectivity design?

A: Yes. All substitute parts maintain the same electrical interface: 25 signal contacts, gold-plated contact finish, and solder termination. Dielectric material variations (Polyamide PA9T versus Polyester Thermoplastic) do not affect electrical performance within the D-Sub receptacle category.

Q: What is the significance of RoHS3 compliance on the substitute parts?

A: RoHS3 compliance indicates the substitute parts meet current Restriction of Hazardous Substances directives, restricting lead, cadmium, mercury, and other hazardous materials. The original TE Connectivity 788752-2 is RoHS non-compliant. For new designs or applications subject to RoHS regulations, substitute parts with ROHS3 compliance are required.

Q: How do packaging formats (Tray, Bulk, Tube) affect part selection?

A: Packaging format affects order quantity, storage, and handling but does not impact electrical or mechanical compatibility. Tray packaging is standard for production quantities. Bulk packaging offers cost efficiency for high-volume orders. Tube packaging is used for specific distribution channels. Select based on your procurement and inventory management requirements.

Q: What is the operating temperature range for substitute parts?

A: NorComp substitute parts (182 series) operate from -55°C to 105°C. Mercury United Electronics substitute parts (622 series) operate from -55°C to 85°C. The original TE Connectivity 788752-2 does not specify an operating temperature range. Verify your application temperature requirements against the selected substitute part specification.

Q: Are there current rating differences between the original and substitute parts?

A: The original TE Connectivity 788752-2 does not specify a current rating. NorComp substitute parts (182 series) are rated at 5A. Mercury United Electronics substitute parts (622 series) are rated at 3A per contact. Verify your circuit current requirements against the selected substitute part rating.

Q: Can I use Mercury 622-025-668-032 as a direct replacement for TE Connectivity 788752-2?

A: Yes. Mercury 622-025-668-032 is functionally equivalent with Housing/Shell (4-40) flange configuration matching the original part. It includes board lock, filter, mounting brackets, and shielding features. Contact finish thickness is 30.0µin (0.76µm) compared to the original 15.0µin (0.38µm), which does not affect compatibility.

Q: What features distinguish Mercury 622-025-668-032 from other Mercury 622 series alternatives?

A: Mercury 622-025-668-032 includes integrated filter and shielding features in addition to board lock and mounting brackets. It is packaged in Tray format with 1,011 pieces in stock. The contact finish thickness is 30.0µin (0.76µm). These features provide enhanced EMI/RFI protection compared to non-filtered alternatives.

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