TE Connectivity 5749771-2 D-Sub HD Plug 44P Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 5749771-2 is a 44-position D-Sub high-density plug connector with male pins, right-angle solder termination, and through-hole mounting. This connector is part of the AMPLIMITE HD-22 series and is classified as obsolete. The connector features a 3-row high-density layout (DB/B shell size), nickel-plated steel housing, gold-plated brass contacts, and board lock with grounding indents. Due to its obsolete product status, equivalent and substitute connectors from active product lines are necessary for ongoing system maintenance, repair, and new design implementations requiring compatible 44-position D-Sub high-density plug configurations.

Key Parameters

Parameter	Value
Manufacturer Part Number	5749771-2
Manufacturer	TE Connectivity AMP Connectors
Connector Type	Plug, Male Pins
Number of Positions	44
Number of Rows	3
Shell Size, Connector Layout	3 (DB, B) High Density
Mounting Type	Through Hole, Right Angle
Termination	Solder
Shell Material, Finish	Steel, Nickel Plated
Contact Finish	Gold
Current Rating	2A
Voltage Rating	125V
Backset Spacing	0.350" (8.89mm)
Operating Temperature	-55°C ~ 105°C
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 5749771-2 is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

Connector type: Plug with male pins
Number of positions: 44
Number of rows: 3
Shell size and layout: 3 (DB, B) High Density
Mounting type: Through Hole, Right Angle
Termination method: Solder
Backset spacing: 0.350" (8.89mm)

Secondary Compatibility Parameters:

Shell material and finish: Steel, Nickel Plated
Contact finish: Gold
Flange feature configuration
Material flammability rating: UL94 V-0
Dielectric material composition

Substitute parts are grouped into two categories based on their alignment with these parameters:

Category 1: Direct Functional Equivalents – Parts that match all primary substitution criteria and maintain compatibility with the original connector's electrical and mechanical specifications. These parts are from active product lines and provide direct replacement capability.

Category 2: Compatible Alternatives – Parts that satisfy primary substitution criteria but may differ in secondary parameters such as contact finish thickness, current rating, voltage rating, or flange feature design. These parts maintain mechanical and electrical compatibility within the D-Sub high-density 44-position plug connector class.

The HARTING 09565525613 is excluded from direct substitution due to fundamental differences: it is a receptacle (female sockets) rather than a plug (male pins), contains 78 positions instead of 44, and features a 4-row layout instead of 3-row configuration.

Parameter Comparison

Parameter	5749771-2 (Main)	10090926-P444VLF	10090926-P444XLF	10090926-P446VLF	10090926-P446XLF	L717HDB44PD1CH3F	633-044-263-032	633-044-263-043	633-044-663-032	633-044-663-043
Connector Type	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins	Plug, Male Pins
Number of Positions	44	44	44	44	44	44	44	44	44	44
Number of Rows	3	3	3	3	3	3	3	3	3	3
Shell Size, Connector Layout	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density	3 (DB, B) High Density
Mounting Type	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	Through Hole, Right Angle	Right Angle	Right Angle	Right Angle	Right Angle
Termination	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, Tin Plated	Not Specified	Not Specified	Not Specified	Not Specified
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Current Rating	2A	2.5A per Contact	2.5A per Contact	2.5A per Contact	2.5A per Contact	3A	Not Specified	Not Specified	Not Specified	Not Specified
Voltage Rating	125V	250V	250V	250V	250V	250V	Not Specified	Not Specified	Not Specified	Not Specified
Backset Spacing	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)	0.350" (8.89mm)
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	Not Specified	Not Specified	Not Specified	Not Specified
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	Not Specified	Not Specified	Not Specified	Not Specified
Product Status	Obsolete	Active	Active	Active	Active	Active	Not Specified	Not Specified	Not Specified	Not Specified
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	Not Specified	Not Specified	Not Specified	Not Specified

Engineering Selection Recommendations

Primary Recommendation: Amphenol ICC (FCI) 10090926 Series

The Amphenol ICC (FCI) 10090926 series connectors (10090926-P444VLF, 10090926-P444XLF, 10090926-P446VLF, 10090926-P446XLF) are the preferred substitutes for the obsolete TE Connectivity 5749771-2. These parts satisfy all primary substitution criteria and offer the following advantages:

Active product status ensures ongoing availability and supply chain continuity
RoHS Compliant certification aligns with current regulatory requirements
Enhanced current rating (2.5A per Contact) exceeds the original 2A specification
Elevated voltage rating (250V) provides increased design margin over the original 125V
Operating temperature range (-55°C ~ 105°C) matches the original specification
UL94 V-0 flammability rating maintains safety compliance
Board edge mounting capability provides additional design flexibility

The selection between 10090926-P444VLF/P446VLF (mating side female screwlock) and 10090926-P444XLF/P446XLF (board side flange) depends on the specific application's flange mounting requirements.

Secondary Recommendation: Amphenol ICC (Commercial Products) L717HDB44PD1CH3F

The L717HDB44PD1CH3F from Amphenol ICC (Commercial Products) provides an alternative substitute with the following characteristics:

Active product status with established supply availability
RoHS Compliant certification
Highest current rating (3A) among all substitutes
Voltage rating (250V) exceeds original specification
Operating temperature range (-55°C ~ 105°C) matches original
UL94 V-0 flammability rating
Tin-plated steel shell (differs from nickel-plated original)
Mating side female screwlock (M3) flange configuration

Tertiary Recommendation: Mercury United Electronics 633 Series

The Mercury United Electronics 633 series connectors (633-044-263-032, 633-044-263-043, 633-044-663-032, 633-044-663-043) provide compatible alternatives with the following considerations:

All parts maintain 44-position, 3-row, high-density D-Sub plug configuration
Gold contact finish matches original specification
Right-angle solder termination compatible with original
Limited technical specification data available in provided parameters
Inventory availability confirmed for all variants

Compliance and Regulatory Status:

All recommended substitutes maintain RoHS compliance and UL94 V-0 flammability certification, ensuring compatibility with current regulatory frameworks and safety standards. The transition from the obsolete TE Connectivity 5749771-2 to any of these active product line alternatives does not introduce compliance risks.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 10090926-P444VLF directly replace the TE Connectivity 5749771-2 in existing designs?

A: Yes. The 10090926-P444VLF matches all critical substitution parameters: 44-position plug connector, 3-row high-density layout, through-hole right-angle solder termination, 0.350" backset spacing, and operating temperature range of -55°C to 105°C. The higher current rating (2.5A per Contact vs. 2A) and voltage rating (250V vs. 125V) provide enhanced electrical performance without introducing compatibility issues.

Q: What is the difference between the 10090926-P444VLF and 10090926-P444XLF variants?

A: Both connectors are functionally equivalent 44-position D-Sub high-density plugs with identical electrical and mechanical specifications. The primary difference is the flange feature location: the P444VLF features a mating side female screwlock (4-40), while the P444XLF features a board side flange (4-40). Selection depends on the specific mounting configuration required by the application.

Q: Why is the HARTING 09565525613 not recommended as a substitute?

A: The HARTING 09565525613 is fundamentally incompatible with the TE Connectivity 5749771-2. It is a receptacle connector with female sockets (not a plug with male pins), contains 78 positions (not 44), and features a 4-row layout (not 3-row). These differences make it unsuitable for direct substitution.

Q: Are the Mercury United Electronics 633 series connectors equivalent to the Amphenol ICC alternatives?

A: The Mercury United Electronics 633 series connectors satisfy the primary substitution criteria: 44-position plug configuration, 3-row high-density layout, right-angle solder termination, and gold contact finish. However, limited technical specification data is available for these parts. The Amphenol ICC 10090926 series is preferred due to complete specification documentation and active product status confirmation.

Q: What is the impact of the higher voltage rating (250V) in the substitute parts?

A: The higher voltage rating (250V) in the Amphenol ICC 10090926 series and L717HDB44PD1CH3F compared to the original 125V specification provides increased design margin and safety headroom. This does not create compatibility issues; applications designed for 125V operation remain fully compatible with 250V-rated connectors.

Q: Does the tin-plated shell finish of the L717HDB44PD1CH3F affect compatibility with the nickel-plated original?

A: The shell finish difference (tin-plated vs. nickel-plated) does not affect electrical or mechanical compatibility. Both finishes provide corrosion resistance and maintain the connector's structural integrity. The selection between these finishes depends on specific environmental exposure requirements and application-specific corrosion resistance specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All recommended substitute parts (Amphenol ICC 10090926 series, L717HDB44PD1CH3F, and Mercury United Electronics 633 series) are RoHS compliant, ensuring compatibility with current regulatory requirements and supply chain standards.

Q: What is the current rating difference between the original and substitute parts?

A: The original TE Connectivity 5749771-2 has a 2A current rating. The Amphenol ICC 10090926 series provides 2.5A per Contact, and the L717HDB44PD1CH3F provides 3A. These higher ratings do not create compatibility issues; they provide enhanced current-carrying capacity for applications requiring higher power delivery.

Q: Can the substitute parts be used in applications with operating temperatures below -55°C or above 105°C?

A: No. All substitute parts maintain the same operating temperature range as the original (-55°C to 105°C). Applications requiring operation outside this range require alternative connector solutions not covered by these substitutes.

Q: Is inventory availability a consideration in selecting a substitute?

A: Yes. The Amphenol ICC 10090926 series demonstrates higher inventory levels (757–1885 pieces) compared to the original TE Connectivity 5749771-2 (1077 pieces). The L717HDB44PD1CH3F (819 pieces) and Mercury United Electronics 633 series (723–1150 pieces) also provide adequate stock levels. Active product status of the Amphenol ICC alternatives ensures long-term supply continuity.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message