TE Connectivity 5746443-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 5746443-6 is a rectangular connector header designed for through-hole mounting applications. This connector features 26 positions arranged in 2 rows with 0.100" (2.54mm) pitch spacing, shrouded 4-wall construction, and latch lock/eject hook fastening. The part operates across a temperature range of -65°C to 105°C and carries a current rating of 1A per contact.

The 5746443-6 is classified as obsolete. Equivalent and substitute parts from active manufacturers provide functional alternatives with comparable electrical and mechanical specifications, enabling continued system design and maintenance without redesign requirements.

Key Parameters

Parameter	Specification
Connector Type	Header
Contact Type	Male Pin
Number of Positions	26
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall
Mounting Type	Through Hole
Fastening Type	Latch Lock/Eject Hooks
Contact Shape	Square
Contact Material	Phosphor Bronze
Contact Finish - Mating	Gold or Gold-Palladium
Contact Finish - Post	Tin
Insulation Color	Black
Material Flammability Rating	UL94 V-0
Operating Temperature	-65°C ~ 105°C
Current Rating	1A per Contact
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 5746443-6 is determined by strict alignment with the following core parameters:

Critical Matching Parameters:

Connector type: Header
Contact type: Male Pin
Number of positions: 26
Number of rows: 2
Pitch - mating: 0.100" (2.54mm)
Row spacing - mating: 0.100" (2.54mm)
Shrouding: Shrouded - 4 Wall
Mounting type: Through Hole
Fastening type: Latch Lock/Eject Hooks
Contact shape: Square
Contact finish - post: Tin
Material flammability rating: UL94 V-0
Moisture sensitivity level: 1 (Unlimited)

All identified substitute parts meet these core electrical and mechanical parameters. Variations in contact length, insulation height, contact material composition, and contact finish thickness are secondary parameters that do not prevent functional substitution in standard through-hole header applications. Substitute parts from Amphenol ICC (FCI) and 3M are active products with current manufacturing status and compliance certifications.

Parameter Comparison

Parameter	5746443-6 (TE Connectivity)	53611-S26-4LF (Amphenol ICC)	53611-S26-6LF (Amphenol ICC)	71918-126LF (Amphenol ICC)	D3429-6302-AR (3M)	N3429-6302RB (3M)	N3429-6303RB (3M)
Manufacturer	TE Connectivity	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	3M	3M	3M
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Connector Type	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	26	26	26	26	26	26	26
Number of Rows	2	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Press-Fit, Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long	Latch Lock/Eject Hooks, Long
Contact Length - Mating	0.240" (6.10mm)	0.230" (5.84mm)	0.230" (5.84mm)	0.228" (5.80mm)	0.240" (6.10mm)	0.240" (6.10mm)	0.240" (6.10mm)
Contact Length - Post	0.174" (4.42mm)	0.120" (3.05mm)	0.150" (3.81mm)	0.114" (2.90mm)	0.112" (2.84mm)	0.112" (2.84mm)	0.155" (3.94mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold or Gold-Palladium	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold, GXT™	Gold	Gold	Gold
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black	Gray	Black	Black	Black
Operating Temperature	-65°C ~ 105°C	Not specified	Not specified	Not specified	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Current Rating	1A per Contact	Not specified	Not specified	Not specified	1.75A	1.75A	1.75A
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not applicable	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Active Product Availability: All substitute parts are manufactured by active suppliers with current production status. The 5746443-6 is obsolete and no longer manufactured by TE Connectivity. Selection of an active substitute part ensures long-term supply chain continuity and access to current manufacturing processes.

Compliance and Certifications: Amphenol ICC (FCI) substitute parts 53611-S26-4LF, 53611-S26-6LF, and 71918-126LF carry RoHS Compliant or ROHS3 Compliant certifications. The 3M substitute parts D3429-6302-AR, N3429-6302RB, and N3429-6303RB are ROHS3 Compliant. All substitute parts maintain UL94 V-0 flammability ratings and MSL 1 moisture sensitivity levels consistent with the original part.

Electrical Performance: The 3M D3429-6302-AR, N3429-6302RB, and N3429-6303RB parts specify a current rating of 1.75A per contact, which exceeds the 1A rating of the original 5746443-6. Amphenol ICC parts do not specify current ratings but maintain equivalent contact geometry and materials. All parts are suitable for standard through-hole header applications requiring 26-position, 2-row connectivity at 0.100" pitch.

Mechanical Compatibility: All substitute parts feature identical connector type, contact type, position count, row configuration, pitch spacing, shrouding, mounting type, and fastening mechanism. Contact length variations are within acceptable tolerances for standard PCB through-hole mounting. The 3M parts feature extended fastening hooks (Long) compared to standard hooks on Amphenol ICC parts, providing enhanced mechanical retention.

Packaging Considerations: Amphenol ICC 53611-S26-4LF and 53611-S26-6LF are supplied in Tray packaging. Amphenol ICC 71918-126LF is supplied in Tube packaging. 3M N3429-6302RB and N3429-6303RB are supplied in Bulk packaging. 3M D3429-6302-AR is supplied in Tray packaging. Selection should account for assembly process requirements and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 53611-S26-4LF and 53611-S26-6LF be used interchangeably with the TE Connectivity 5746443-6?

A: Both Amphenol ICC parts are functionally equivalent to the 5746443-6 for standard through-hole header applications. The primary difference is contact post length: 53611-S26-4LF has 0.120" (3.05mm) post length, while 53611-S26-6LF has 0.150" (3.81mm) post length. Selection depends on PCB thickness and solder joint requirements. Both parts maintain identical mating pitch, position count, shrouding, and fastening characteristics.

Q: What is the difference between the 3M N3429-6302RB and N3429-6303RB?

A: Both parts are from the 3M 3000 series and are functionally equivalent. The primary difference is contact post length: N3429-6302RB has 0.112" (2.84mm) post length, while N3429-6303RB has 0.155" (3.94mm) post length. Both parts feature identical mating contact length, operating temperature range (-55°C to 105°C), current rating (1.75A), and compliance certifications.

Q: Are the Amphenol ICC Quickie™ series parts RoHS compliant?

A: Yes. Amphenol ICC 53611-S26-4LF, 53611-S26-6LF, and 71918-126LF are all RoHS Compliant. These parts also carry REACH Affected status. The 3M parts are ROHS3 Compliant with REACH Unaffected status (N3429-6302RB and N3429-6303RB) or REACH status not specified (D3429-6302-AR).

Q: What is the difference between the Amphenol ICC 71918-126LF and the 53611 series parts?

A: The 71918-126LF differs in several secondary parameters: it features a Gray insulation color (versus Black), Thermoplastic Glass Filled insulation material (versus standard Thermoplastic), and includes a Mounting Flange feature. Contact post length is 0.114" (2.90mm). The part maintains identical mating pitch, position count, shrouding, and fastening characteristics. The 71918-126LF is supplied in Tube packaging with higher inventory availability (2300 pcs).

Q: Can I use a 3M part as a direct replacement for the TE Connectivity 5746443-6 without PCB redesign?

A: The 3M D3429-6302-AR, N3429-6302RB, and N3429-6303RB parts are mechanically and electrically compatible with the 5746443-6 for standard through-hole mounting applications. All parts share identical mating pitch (0.100"), position count (26), row configuration (2 rows), shrouding (Shrouded - 4 Wall), and fastening type (Latch Lock/Eject Hooks). Contact post length variations require verification against specific PCB thickness and solder joint design parameters.

Q: What is the significance of the contact finish thickness differences?

A: Contact finish thickness affects durability and wear resistance. The 5746443-6 specifies 30.0µin (0.76µm) mating finish thickness. Amphenol ICC parts specify 15.0µin (0.38µm), while 3M D3429-6302-AR specifies 10.0µin (0.25µm), and 3M N3429 series parts specify 30.0µin (0.76µm). All finishes are within industry standards for through-hole header applications. Post finish thickness also varies: 5746443-6 specifies 100.0µin (2.54µm), while 71918-126LF specifies 78.7µin (2.00µm), and 3M D3429-6302-AR specifies 39.4µin (1.00µm).

Q: Which substitute part has the highest current rating?

A: The 3M D3429-6302-AR, N3429-6302RB, and N3429-6303RB all specify a current rating of 1.75A per contact, which exceeds the 1A rating of the original 5746443-6. Amphenol ICC parts do not specify current ratings in the provided data.

Q: Are there temperature range differences between substitute parts?

A: The 5746443-6 operates from -65°C to 105°C. The 3M substitute parts (D3429-6302-AR, N3429-6302RB, N3429-6303RB) operate from -55°C to 105°C, providing a narrower low-temperature range. Amphenol ICC parts do not specify operating temperature ranges. For applications requiring operation below -55°C, the original 5746443-6 specification or equivalent parts with extended low-temperature ratings should be verified.

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