TE Connectivity 4-644631-0 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 4-644631-0 is a rectangular connector header, vertical orientation, 10-position configuration with 0.156" (3.96mm) pitch. This through-hole component is designed for board-to-cable/wire applications in general purpose and industrial environments. The part operates across a temperature range of -55°C to 105°C with a 600VAC voltage rating and UL94 V-0 flammability classification.

The 4-644631-0 is classified as obsolete. Equivalent and substitute parts from active manufacturers provide direct functional alternatives with maintained electrical and mechanical compatibility for new designs and legacy system replacements.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.156" (3.96mm)
Number of Positions	10
Number of Rows	1
Mounting Type	Through Hole
Termination	Solder
Shrouding	Shrouded - 1 Wall
Contact Shape	Square
Fastening Type	Friction Lock
Material Flammability Rating	UL94 V-0
Voltage Rating	600VAC
Operating Temperature	-55°C ~ 105°C
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 4-644631-0 is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

Connector type: Header
Contact type: Male Pin
Pitch - mating: 0.156" (3.96mm)
Number of positions: 10
Number of rows: 1
Mounting type: Through Hole
Termination: Solder
Shrouding: Shrouded - 1 Wall
Contact shape: Square
Fastening type: Friction Lock

Secondary Compatibility Parameters:

Material flammability rating: UL94 V-0
Moisture sensitivity level: 1 (Unlimited)
Style: Board to Board or Cable

Substitute parts from Molex maintain these core specifications. Variations in contact length dimensions, contact finish materials, and insulation material composition do not prevent functional substitution when the primary matching criteria are satisfied. Parts with differing numbers of positions loaded (8 or 9 versus all 10) are included as substitutes when the connector housing accommodates the full 10-position configuration.

Parameter Comparison

Parameter	4-644631-0 (TE)	0026604100 (Molex)	0026604102 (Molex)	0026604103 (Molex)	0026606102 (Molex)	0026624101 (Molex)	0026626082 (Molex)	0026654100 (Molex)	0417910840 (Molex)	0417910857 (Molex)	1718130010 (Molex)
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Pitch - Mating	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)	0.156" (3.96mm)
Number of Positions	10	10	10	10	10	10	10	10	10	10	10
Number of Rows	1	1	1	1	1	1	1	1	1	1	1
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Shrouding	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall	Shrouded - 1 Wall
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Fastening Type	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock
Contact Length - Mating	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.450" (11.43mm)	0.448" (11.38mm)
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	Not applicable	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed Molex substitute parts maintain active product status and ROHS3 compliance, providing long-term availability and regulatory alignment for new designs and production environments requiring RoHS certification.

Primary Substitutes for Direct Replacement:

The Molex 0026604100, 0026604102, and 0026604103 parts from the KK396 series provide the most direct functional equivalence to the 4-644631-0. These parts maintain identical pitch, position count, mounting configuration, and shrouding specifications. The 0026604100 variant with all 10 positions loaded is the preferred substitute for applications requiring full position utilization.

Gold-Plated Contact Alternatives:

For applications requiring gold-plated mating contacts matching the original TE part specification, the Molex 0026606102, 0026654100, 0417910840, and 0417910857 parts provide gold finish options. The 0417910857 part offers contact finish thickness of 30.0µin (0.76µm), matching the original specification. The 0417910840 variant provides 15.0µin (0.38µm) gold thickness with active product status and ROHS3 compliance.

Partial Position Loading:

The Molex 0026624101 part accommodates 8 loaded positions within a 10-position housing, and the 0026626082 part accommodates 9 loaded positions. These variants are suitable for applications where fewer active connections are required within the same connector footprint.

Alternative Series Consideration:

The Molex 1718130010 from the KK396/171813 series provides a functionally equivalent 10-position header with slightly shorter contact lengths (0.448" mating, 0.093" post) and polyamide insulation material. This part maintains all critical electrical and mechanical parameters while offering an alternative material composition.

Frequently Asked Questions (FAQ)

Q: Can Molex KK396 series connectors directly replace the TE Connectivity MTA-156 4-644631-0?

A: Yes. The Molex KK396 series parts listed maintain identical pitch (0.156"/3.96mm), position count (10), mounting type (through hole), termination (solder), shrouding (shrouded 1-wall), and contact shape (square). These parameters define functional compatibility for board-to-cable/wire applications.

Q: What is the difference between 0026604100, 0026604102, and 0026604103?

A: These three parts differ in contact post length. The 0026604100 and 0026604102 both feature 0.140" (3.56mm) post length, while the 0026604103 features 0.170" (4.32mm) post length. Overall contact length varies accordingly: 0.720" for the first two variants and 0.750" for the 0026604103. Selection depends on PCB thickness and solder joint requirements.

Q: Are there differences in contact finish between substitute parts?

A: Yes. The original 4-644631-0 features gold-plated mating contacts (30.0µin/0.76µm thickness). Substitute parts offer both tin and gold finish options. The 0417910857 provides matching 30.0µin gold thickness. The 0026604100, 0026604102, and 0026604103 feature tin-plated mating contacts (60.0µin/1.52µm thickness). Contact finish selection depends on application requirements for corrosion resistance and contact reliability.

Q: What is the significance of "Number of Positions Loaded"?

A: This parameter indicates how many of the 10 available position cavities contain contacts. The 0026624101 has 8 positions loaded, and the 0026626082 has 9 positions loaded, while most other variants have all 10 positions loaded. The connector housing remains 10-position in all cases. Selection depends on whether all 10 positions require active connections.

Q: Do all substitute parts meet the same flammability and compliance standards?

A: Yes. All listed Molex substitute parts maintain UL94 V-0 flammability rating and ROHS3 compliance. The original 4-644631-0 is not RoHS-applicable due to its obsolete status. The active Molex alternatives provide regulatory alignment for new designs and production environments requiring RoHS certification.

Q: What is the difference between the KK396 and KK396/171813 series?

A: The Molex 1718130010 from the KK396/171813 series differs in insulation material (polyamide/nylon versus polyester/glass-filled), insulation color (black versus natural), and contact post length (0.093" versus 0.140"). The flammability rating is UL94 V-2 rather than V-0. This variant is suitable for applications where these material and dimensional specifications are acceptable.

Q: Can the 4-644631-0 be used interchangeably with parts having different insulation materials?

A: Functional interchangeability is determined by electrical and mechanical parameters, not insulation material composition. Parts with polyester, polyamide, or glass-filled insulation variants maintain the same pitch, position count, mounting type, and contact configuration. Material selection depends on specific application requirements for temperature performance, chemical resistance, and mechanical properties.

Q: What inventory availability should be considered for production planning?

A: The original 4-644631-0 has 737 pieces in stock but is obsolete. Active substitute parts have varying inventory levels: 0417910840 (2,371 pcs), 0026604100 (12,663 pcs), 0026654100 (1,048 pcs), 0026606102 (773 pcs), 0026626082 (1,077 pcs), 0026624101 (906 pcs), 0026604102 (1,145 pcs), 0026604103 (1,087 pcs), 0417910857 (861 pcs), and 1718130010 (1,006 pcs). The 0026604100 offers the highest inventory availability for high-volume production requirements.

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