TE Connectivity 1-644695-0 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-644695-0 is a vertical connector header for through-hole mounting with 10 positions at 0.100" (2.54mm) pitch. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing design and procurement requirements. The part belongs to the MTA-100 series rectangular connectors and is designed for board-to-cable/wire applications with unshrouded, male pin contacts.

Key Parameters

Parameter	Value
Manufacturer Part Number	1-644695-0
Manufacturer	TE Connectivity AMP Connectors
Series	MTA-100
Product Status	Obsolete
Connector Type	Header
Contact Type	Male Pin
Number of Positions	10
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Operating Temperature Range	-55°C ~ 105°C
Voltage Rating	250VAC
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the 1-644695-0 is determined by the following critical parameters:

Primary Matching Criteria:

Number of positions: 10
Pitch - Mating: 0.100" (2.54mm)
Connector type: Header
Contact type: Male Pin
Mounting type: Through Hole
Material flammability rating: UL94 V-0

Secondary Compatibility Factors:

Operating temperature range (minimum -55°C, maximum 105°C or higher)
Voltage rating (minimum 250VAC or unspecified)
Contact shape: Square
Insulation material: Thermoplastic

The substitute parts are grouped into two categories:

Category 1: Direct TE Connectivity Equivalent

4-644695-0: Active status variant of the same base product (644695) with improved RoHS3 compliance

Category 2: Amphenol ICC (FCI) BERGSTIK® Series Alternatives

77311-122-10LF, 77311-124-10LF, 77311-127-10LF (Bulk packaging, gold or gold GXT™ finish)
77311-422-10LF, 77311-424-10LF, 77311-427-10LF (Bag packaging, tin finish)
77311-822-10LF, 77311-824-10LF, 77311-827-10LF (Bulk packaging, gold or gold GXT™ finish, reduced thickness)

All substitute parts maintain the core electrical and mechanical specifications required for functional equivalence while offering active product status and improved compliance certifications.

Parameter Comparison

Parameter	1-644695-0	4-644695-0	77311-122-10LF	77311-124-10LF	77311-127-10LF	77311-422-10LF	77311-424-10LF	77311-427-10LF	77311-822-10LF	77311-824-10LF	77311-827-10LF
Manufacturer	TE Connectivity	TE Connectivity	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)
Series	MTA-100	MTA-100	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
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	10	10	10	10	10	10	10	10	10	10	10
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)
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
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Insulation Material	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
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
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 105°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
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)
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99

Engineering Selection Recommendations

Primary Recommendation: 4-644695-0

The 4-644695-0 is the direct active equivalent from TE Connectivity. This part maintains identical electrical and mechanical specifications to the 1-644695-0 while offering active product status and ROHS3 compliance. Selection of this part eliminates cross-manufacturer compatibility concerns and maintains design continuity within the MTA-100 series.

Secondary Recommendations: Amphenol ICC (FCI) BERGSTIK® Series

The BERGSTIK® series parts (77311 base number) provide functional equivalence across all critical parameters. These parts offer the following advantages:

Active product status across all variants
RoHS compliance certification
Extended operating temperature range (-65°C ~ 125°C versus -55°C ~ 105°C)
Higher current rating (3A per contact versus varies by wire gauge)
Improved contact material (Phosphor Bronze versus Copper Alloy)

Selection by Contact Length and Finish:

The BERGSTIK® series is differentiated by contact length and finish specifications:

77311-122-10LF / 77311-422-10LF / 77311-822-10LF: 0.305" (7.75mm) mating contact length
77311-124-10LF / 77311-424-10LF / 77311-824-10LF: 0.266" (6.75mm) mating contact length
77311-127-10LF / 77311-427-10LF / 77311-827-10LF: 0.260" (6.60mm) mating contact length

Contact finish options include:

Gold or Gold GXT™ (77311-1xx-10LF, 77311-8xx-10LF series)
Tin (77311-4xx-10LF series)

Compliance Considerations:

All substitute parts meet UL94 V-0 flammability requirements. The 4-644695-0 and all BERGSTIK® variants are RoHS compliant, addressing regulatory requirements that the original 1-644695-0 does not satisfy. REACH compliance status varies by part; refer to individual datasheets for specific applications requiring REACH documentation.

Frequently Asked Questions (FAQ)

Q: Can the 4-644695-0 be used as a direct replacement for the 1-644695-0?

A: Yes. The 4-644695-0 maintains identical electrical and mechanical specifications including pitch, number of positions, mounting type, operating temperature range, and voltage rating. The primary difference is active product status and improved RoHS3 compliance.

Q: What are the key differences between TE Connectivity MTA-100 and Amphenol ICC BERGSTIK® headers?

A: Both series share identical pitch (0.100"), position count (10), mounting type (through hole), and flammability rating (UL94 V-0). BERGSTIK® parts offer extended operating temperature range (-65°C ~ 125°C), higher current rating (3A per contact), and Phosphor Bronze contacts versus Copper Alloy. The original 1-644695-0 uses Tin-Lead finish; BERGSTIK® variants use either Gold/Gold GXT™ or Tin finishes.

Q: How do I select the correct BERGSTIK® variant by contact length?

A: Contact length selection depends on mating depth requirements. The 77311-122-10LF/422-10LF/822-10LF series provides the longest mating contact (0.305"), suitable for deeper board-to-board or board-to-cable applications. The 77311-127-10LF/427-10LF/827-10LF series provides the shortest mating contact (0.260"), suitable for shallow mating applications. The 77311-124-10LF/424-10LF/824-10LF series provides intermediate length (0.266").

Q: What is the difference between bulk and bag packaging for BERGSTIK® parts?

A: Bulk packaging (77311-1xx-10LF, 77311-8xx-10LF) and bag packaging (77311-4xx-10LF) represent different distribution formats. Electrical and mechanical specifications are identical; packaging selection depends on procurement volume and handling requirements.

Q: Are BERGSTIK® parts compatible with MTA-100 mating connectors?

A: BERGSTIK® headers are designed for board-to-board applications with Push-Pull fastening, while the original 1-644695-0 is specified for board-to-cable/wire applications. Mechanical compatibility with existing mating connectors must be verified through contact geometry and mating force specifications in detailed datasheets.

Q: What compliance certifications should I prioritize for new designs?

A: All substitute parts listed are RoHS compliant. For applications requiring REACH compliance, verify individual part documentation as REACH status varies. The 4-644695-0 offers ROHS3 compliance, representing the most current regulatory standard.

Q: Can I mix contact finishes within a single assembly?

A: Contact finish selection (Gold/Gold GXT™ versus Tin) affects mating force, wear characteristics, and corrosion resistance. Mixing finishes within a single connector assembly is not recommended without engineering analysis of contact interface behavior.

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