Equivalent & Substitute Parts for TE Connectivity 1-644456-4 Rectangular Connector Header

Part Overview

The TE Connectivity 1-644456-4 is a vertical rectangular connector header from the MTA-100 series, designed for through-hole mounting with 14 positions at 0.100" (2.54mm) pitch. This connector features male pins with tin-lead plating and is rated for 250VAC operation across a temperature range of -55°C to 105°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design and procurement requirements. Active alternatives are available from both TE Connectivity and Amphenol ICC (FCI) manufacturers, offering improved compliance and availability characteristics.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	14
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Operating Temperature Range	-55°C to 105°C
Voltage Rating	250VAC
Material Flammability Rating	UL94 V-0
Insulation Material	Thermoplastic
Contact Material	Copper Alloy

Substitute Part Grouping Explanation

Substitution of the 1-644456-4 connector header is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Number of positions: 14
Pitch spacing: 0.100" (2.54mm)
Connector type: Header with male pins
Mounting method: Through hole solder termination
Operating temperature range: Minimum -55°C to 105°C
Voltage rating: 250VAC or higher
Flammability rating: UL94 V-0

Direct Equivalent: The TE Connectivity 4-644456-4 is a direct equivalent from the same manufacturer and series (MTA-100), differing only in contact finish (tin instead of tin-lead) and RoHS compliance status. This part maintains identical electrical and mechanical specifications while offering active product status and improved regulatory compliance.

Cross-Manufacturer Alternatives: Amphenol ICC (FCI) BERGSTIK® series connectors (77311-122-14LF, 77311-124-14LF, 77311-127-14LF, 77311-170-14LF, 77311-422-14LF, 77311-424-14LF, 77311-427-14LF, 77311-822-14LF, 77311-824-14LF) provide functional equivalence with variations in contact length, contact finish, and fastening type (push-pull). These alternatives maintain the core 14-position, 2.54mm pitch configuration with through-hole solder termination and UL94 V-0 flammability rating. Operating temperature ranges extend to -65°C to 125°C, providing enhanced thermal performance. Contact material differs (phosphor bronze vs. copper alloy) and current ratings are specified at 3A per contact.

Parameter Comparison

Parameter	1-644456-4	4-644456-4	77311-122-14LF	77311-124-14LF	77311-127-14LF	77311-170-14LF	77311-422-14LF	77311-424-14LF	77311-427-14LF	77311-822-14LF	77311-824-14LF
Manufacturer	TE Connectivity	TE Connectivity	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC
Series	MTA-100	MTA-100	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®
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
Number of Positions	14	14	14	14	14	14	14	14	14	14	14
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)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
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
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C	-65°C to 125°C
Voltage Rating	250VAC	250VAC	Not specified	Not specified	Not specified	Not specified	Not specified	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	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Material	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
Contact Material	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Contact Finish - Mating	Tin-Lead	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Tin	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™
RoHS Status	Non-compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 4-644456-4

The 4-644456-4 is the preferred direct substitute for the obsolete 1-644456-4. Both components are from the same manufacturer (TE Connectivity) and series (MTA-100), ensuring mechanical and electrical compatibility. The 4-644456-4 maintains identical specifications for connector type, position count, pitch, mounting method, and operating temperature range. The primary differences are contact finish (tin instead of tin-lead) and RoHS compliance status. The 4-644456-4 is RoHS compliant and carries active product status, eliminating obsolescence concerns. This part is recommended for direct replacement in new designs and legacy system updates.

Secondary Recommendations: Amphenol ICC BERGSTIK® Series

The Amphenol ICC BERGSTIK® series connectors (77311-122-14LF through 77311-824-14LF) provide functional equivalence with enhanced thermal performance. These alternatives maintain the 14-position, 2.54mm pitch configuration and through-hole solder termination. All BERGSTIK® variants are RoHS compliant with active product status. Selection among BERGSTIK® variants depends on specific application requirements:

77311-122-14LF, 77311-822-14LF: Gold-plated mating contacts with 0.305" (7.75mm) mating contact length
77311-124-14LF, 77311-824-14LF: Gold-plated mating contacts with 0.266" (6.75mm) mating contact length
77311-127-14LF: Gold-plated mating contacts with 0.260" (6.60mm) mating contact length
77311-170-14LF: Gold-plated mating contacts with 0.257" (6.54mm) mating contact length
77311-422-14LF: Tin-plated mating contacts with 0.305" (7.75mm) mating contact length
77311-424-14LF: Tin-plated mating contacts with 0.266" (6.75mm) mating contact length
77311-427-14LF: Tin-plated mating contacts with 0.260" (6.60mm) mating contact length

BERGSTIK® variants feature push-pull fastening and phosphor bronze contact material, providing enhanced durability and contact retention compared to the original design. These parts are suitable for applications requiring extended temperature operation (-65°C to 125°C) and improved compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the 4-644456-4 be used as a direct replacement for the 1-644456-4?

A: Yes. The 4-644456-4 is a direct equivalent from TE Connectivity's MTA-100 series. Both parts share identical connector type, position count, pitch spacing, mounting method, and operating temperature range. The primary differences are contact finish (tin vs. tin-lead) and RoHS compliance. The 4-644456-4 is recommended for direct replacement.

Q: What are the key differences between TE Connectivity and Amphenol ICC alternatives?

A: TE Connectivity 4-644456-4 maintains the original design specifications with improved compliance. Amphenol ICC BERGSTIK® series connectors offer enhanced thermal performance (-65°C to 125°C vs. -55°C to 105°C), push-pull fastening, phosphor bronze contacts, and specified current ratings (3A per contact). Contact finish options include gold or tin plating. Selection depends on application-specific thermal and mechanical requirements.

Q: Are all substitute parts RoHS compliant?

A: The TE Connectivity 4-644456-4 and all Amphenol ICC BERGSTIK® series parts listed are RoHS compliant. The original 1-644456-4 is RoHS non-compliant. RoHS compliance is required for most modern applications and regulatory environments.

Q: What is the significance of contact finish differences?

A: The original 1-644456-4 features tin-lead plating. The 4-644456-4 uses tin plating. Amphenol ICC BERGSTIK® variants offer either gold or tin plating options. Gold plating provides superior corrosion resistance and lower contact resistance, suitable for low-signal applications. Tin plating is cost-effective and suitable for general-purpose applications. Contact finish selection depends on environmental conditions and signal integrity requirements.

Q: Do all substitute parts maintain the same mating contact length?

A: No. The original 1-644456-4 has a mating contact length of 0.295" (7.49mm). Amphenol ICC BERGSTIK® variants offer multiple mating contact lengths ranging from 0.257" to 0.305" (6.54mm to 7.75mm). Contact length selection affects mating depth and connector stack height. Verify mechanical compatibility with mating connectors before selection.

Q: What packaging options are available?

A: The 4-644456-4 is available in bulk packaging. Amphenol ICC BERGSTIK® series parts are available in bulk or bag packaging. Packaging selection affects inventory management and handling procedures but does not impact electrical or mechanical performance.

Q: Are there any fastening type differences?

A: The original 1-644456-4 has no specified fastening type. The 4-644456-4 also has no specified fastening type. All Amphenol ICC BERGSTIK® variants feature push-pull fastening, providing positive connector retention and improved reliability in applications subject to vibration or mechanical stress.

Q: What is the current rating for each substitute part?

A: The original 1-644456-4 has a current rating that varies by wire gauge. The 4-644456-4 maintains this specification. All Amphenol ICC BERGSTIK® variants specify 3A per contact, providing defined current handling capacity independent of wire gauge selection.

Q: Can BERGSTIK® connectors be used in board-to-cable applications?

A: The original 1-644456-4 is specified for board-to-cable/wire applications. Amphenol ICC BERGSTIK® variants are specified for board-to-board applications. While mechanical compatibility may exist, application-specific design verification is required to confirm suitability for board-to-cable configurations.

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