TE Connectivity 1-644627-0 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-644627-0 is a rectangular connector header designed for through-hole mounting applications. This connector features a 10-position, single-row configuration with 0.156" (3.96mm) pitch spacing, suitable for board-to-cable and board-to-wire interconnections in general purpose and industrial applications. The part operates across a temperature range of -55°C to 105°C with a 600VAC voltage rating.

The 1-644627-0 carries an obsolete product status, necessitating identification of active equivalent and substitute components that maintain functional compatibility while offering current manufacturing availability and compliance certifications.

Key Parameters

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

Substitute Part Grouping Explanation

Substitution eligibility for the 1-644627-0 is determined by strict alignment with the following core parameters:

Critical Matching Parameters:

Connector Type: Header
Contact Type: Male Pin
Number of Positions: 10
Number of Rows: 1
Pitch - Mating: 0.156" (3.96mm)
Mounting Type: Through Hole
Termination: Solder
Shrouding: Shrouded - 1 Wall
Fastening Type: Friction Lock
Contact Shape: Square
Material Flammability Rating: UL94 V-0

Allowable Variation Parameters:

Contact Finish - Mating: Gold or Tin (both acceptable for electrical compatibility)
Contact Length - Post: Variations within 0.125" to 0.170" (3.18mm to 4.32mm) accommodate different PCB stack-up requirements
Overall Contact Length: Variations within 0.700" to 0.750" (17.78mm to 19.05mm) reflect post length differences
Insulation Height: Variations within 0.446" to 0.545" (11.33mm to 13.84mm) are acceptable
Number of Positions Loaded: Full loading (All) or partial loading (8 positions) depends on application requirements
Insulation Material: Thermoplastic or Polyester, both glass-filled, maintain equivalent performance

Substitute parts must maintain the same connector series compatibility (MTA-156 or equivalent KK396 series) and preserve the board-to-cable/wire connection style.

Parameter Comparison

Parameter	1-644627-0 (TE)	4-644627-0 (TE)	0026604100 (Molex)	0026604103 (Molex)	0026606102 (Molex)	0026624101 (Molex)	0417910840 (Molex)	0417910857 (Molex)
Manufacturer	TE Connectivity	TE Connectivity	Molex	Molex	Molex	Molex	Molex	Molex
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Connector Type	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
Number of Positions	10	10	10	10	10	10	10	10
Number of Rows	1	1	1	1	1	1	1	1
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)
Mounting Type	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
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
Fastening Type	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock	Friction Lock
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square
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)
Contact Length - Post	0.125" (3.18mm)	0.125" (3.18mm)	0.140" (3.56mm)	0.170" (4.32mm)	0.140" (3.56mm)	0.140" (3.56mm)	0.140" (3.56mm)	0.140" (3.56mm)
Overall Contact Length	0.700" (17.78mm)	0.700" (17.78mm)	0.720" (18.29mm)	0.750" (19.05mm)	0.720" (18.29mm)	0.720" (18.29mm)	0.720" (18.29mm)	0.720" (18.29mm)
Insulation Height	0.545" (13.84mm)	0.545" (13.84mm)	0.446" (11.33mm)	0.446" (11.33mm)	0.446" (11.33mm)	0.446" (11.33mm)	0.446" (11.33mm)	0.446" (11.33mm)
Contact Finish - Mating	Gold	Gold	Tin	Tin	Gold	Tin	Gold	Gold
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Number of Positions Loaded	All	All	All	All	All	8	All	All
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
RoHS Status	Non-compliant	Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	Vendor Undefined	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 4-644627-0

The 4-644627-0 is the direct successor to the obsolete 1-644627-0. Both parts share identical electrical and mechanical specifications with the exception of contact finish on the post (Tin-Lead versus Tin) and compliance certifications. The 4-644627-0 carries active product status, RoHS compliance, and REACH unaffected designation, making it the preferred choice for new designs and production continuity. This part maintains full compatibility with existing mating connectors and PCB layouts designed for the 1-644627-0.

Secondary Recommendations: Molex KK396 Series

The Molex 0417910840 and 0417910857 provide functionally equivalent alternatives with active product status and full RoHS3 compliance. These parts maintain the critical 10-position, 0.156" pitch configuration and through-hole solder termination. The primary differences are insulation height (0.446" versus 0.545") and contact post length variations (0.140" versus 0.125"). These dimensional differences are acceptable for applications where PCB stack-up accommodates the reduced insulation height.

The Molex 0026604100 and 0026604103 offer additional options with identical core functionality. The 0026604103 features an extended contact post length (0.170") suitable for applications requiring deeper PCB penetration.

Compliance Considerations

All recommended substitute parts carry RoHS3 compliance and REACH unaffected status, addressing regulatory requirements absent from the obsolete 1-644627-0. Organizations transitioning from the 1-644627-0 should prioritize the 4-644627-0 for direct replacement or select Molex alternatives based on specific PCB design requirements and dimensional constraints.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0026604100 directly replace the TE Connectivity 1-644627-0 on existing PCBs?

A: The Molex 0026604100 maintains electrical compatibility through identical pitch (0.156"), position count (10), and contact configuration. However, the insulation height differs (0.446" versus 0.545"), which may affect mechanical fit depending on PCB design. Verify that the reduced insulation height does not interfere with adjacent components or PCB features before substitution.

Q: What is the significance of the contact post length variation between parts?

A: Contact post length determines how deeply the connector penetrates the PCB. The 1-644627-0 features a 0.125" post, while Molex alternatives range from 0.140" to 0.170". Longer posts provide greater mechanical engagement with PCB vias but require deeper plating. Shorter posts reduce material usage but may compromise retention in thin PCBs. Select based on PCB thickness and via depth specifications.

Q: Why do some substitute parts have partial position loading (8 positions instead of 10)?

A: The Molex 0026624101 is manufactured with 8 positions loaded while maintaining the 10-position housing. This configuration is used in applications requiring fewer active connections while preserving the same form factor. This part is not suitable as a direct replacement for the 1-644627-0 unless the application design specifically accommodates reduced position count.

Q: Are there compatibility differences between gold and tin contact finishes?

A: Both gold and tin finishes provide acceptable electrical performance for this connector category. Gold finishes (1-644627-0, 4-644627-0, 0026606102, 0417910840, 0417910857) offer superior corrosion resistance and lower contact resistance. Tin finishes (0026604100, 0026604103, 0026624101) are cost-effective alternatives suitable for standard industrial applications. Mating connectors must be compatible with the selected finish type.

Q: What is the impact of insulation material differences (Thermoplastic versus Polyester)?

A: Both thermoplastic glass-filled and polyester glass-filled materials meet UL94 V-0 flammability requirements and operate across the -55°C to 105°C temperature range. Material selection does not affect electrical performance or mechanical compatibility. The choice reflects manufacturing process and cost considerations rather than functional capability.

Q: Is the 4-644627-0 the only TE Connectivity option for replacing the obsolete 1-644627-0?

A: The 4-644627-0 is the direct TE Connectivity successor and recommended primary replacement. However, Molex KK396 series alternatives (0417910840, 0417910857, 0026604100, 0026604103, 0026606102) provide equivalent functionality with active product status and full compliance certifications. Selection depends on supply chain preferences, cost considerations, and specific dimensional requirements.

Q: How do RoHS and REACH compliance differences affect part selection?

A: The obsolete 1-644627-0 carries non-compliant RoHS status and undefined REACH status. All recommended substitutes are RoHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronics manufacturing. Organizations subject to RoHS or REACH regulations must transition to compliant alternatives; the 4-644627-0 or Molex options satisfy these requirements.

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