TE Connectivity 644695-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644695-6 is a rectangular connector header for through-hole mounting, featuring 6 vertical positions at 0.100" (2.54mm) pitch. This connector is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design and procurement requirements. The part functions as a board-to-cable/wire interface with unshrouded male pin contacts and kinked pin solder termination. Equivalent parts maintain functional compatibility while substitute parts offer alternative electrical and mechanical characteristics within acceptable parameters for the rectangular connector category.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	6
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Shrouding	Unshrouded
Operating Temperature Range	-55°C ~ 105°C
Voltage Rating	250VAC
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644695-6 is determined by strict alignment of the following critical parameters:

Primary Compatibility Criteria:

Connector type (Header)
Contact type (Male Pin)
Number of positions (6)
Pitch - mating (0.100" / 2.54mm)
Mounting type (Through Hole)
Shrouding (Unshrouded)
Material flammability rating (UL94 V-0)
Moisture sensitivity level (1 - Unlimited)

Secondary Consideration Parameters:

Operating temperature range (minimum -55°C, maximum 105°C or higher)
Contact material and finish specifications
Overall contact length and insulation height
Termination method compatibility

Substitute parts are grouped into two categories: direct equivalents from TE Connectivity that maintain identical specifications with updated compliance status, and functionally compatible alternatives from Amphenol ICC (FCI) that meet all primary criteria while offering variations in contact finish, contact length, and operating temperature range.

Parameter Comparison

Parameter	644695-6	3-644695-6	69173-406HLF	77311-122-06LF	77311-124-06LF	77311-127-06LF	77311-422-06LF	77311-424-06LF	77311-427-06LF	77311-822-06LF	77311-824-06LF
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® II	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	6	6	6	6	6	6	6	6	6	6	6
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
Termination	Kinked Pin, Solder	Kinked Pin, Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Length - Mating	0.295" (7.49mm)	0.295" (7.49mm)	0.295" (7.49mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.260" (6.60mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.260" (6.60mm)	0.305" (7.75mm)	0.266" (6.75mm)
Contact Length - Post	0.110" (2.79mm)	0.110" (2.79mm)	0.135" (3.43mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)	0.120" (3.05mm)	0.114" (2.90mm)
Overall Contact Length	0.505" (12.83mm)	0.505" (12.83mm)	0.530" (13.46mm)	0.525" (13.34mm)	0.480" (12.19mm)	0.465" (11.81mm)	0.525" (13.34mm)	0.480" (12.19mm)	0.465" (11.81mm)	0.525" (13.34mm)	0.480" (12.19mm)
Insulation Height	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)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
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	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Tin	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™
Operating Temperature	-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
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 Color	Natural	Natural	Black	Black	Black	Black	Black	Black	Black	Black	Black
Current Rating	Varies by Wire Gauge	Varies by Wire Gauge	3A	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
ECCN	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040	8536.69.4040

Engineering Selection Recommendations

Direct Equivalent - Recommended for Obsolescence Replacement:

The TE Connectivity 3-644695-6 is the primary direct equivalent to the obsolete 644695-6. This part maintains identical electrical and mechanical specifications while offering active product status and ROHS3 compliance. The 3-644695-6 is functionally interchangeable with the original part and is the preferred selection for direct replacement in existing designs.

Amphenol ICC (FCI) BERGSTIK® Series Alternatives:

The Amphenol ICC (FCI) BERGSTIK® series connectors (77311-122-06LF, 77311-124-06LF, 77311-127-06LF, 77311-422-06LF, 77311-424-06LF, 77311-427-06LF, 77311-822-06LF, 77311-824-06LF) and BERGSTIK® II series (69173-406HLF) provide functional substitution with the following considerations:

All BERGSTIK® alternatives meet the primary compatibility criteria of 6-position, 0.100" pitch, through-hole, unshrouded male pin headers with UL94 V-0 flammability rating and MSL 1 classification. These parts feature phosphor bronze contact material with improved operating temperature range (-65°C to 125°C) compared to the original specification (-55°C to 105°C).

Contact length variations exist across the BERGSTIK® series. Parts designated with "-122-" and "-422-" and "-822-" suffix maintain 0.305" (7.75mm) mating contact length. Parts with "-124-" and "-424-" and "-824-" suffix provide 0.266" (6.75mm) mating contact length. Parts with "-127-" and "-427-" suffix provide 0.260" (6.60mm) mating contact length. Selection must account for PCB stack-up and mating connector depth requirements.

Contact finish options include tin finish (77311-422-06LF, 77311-424-06LF, 77311-427-06LF) and gold or gold GXT™ finish (77311-122-06LF, 77311-124-06LF, 77311-127-06LF, 77311-822-06LF, 77311-824-06LF). Gold-finished variants provide enhanced corrosion resistance and are suitable for applications requiring extended shelf life or harsh environmental exposure.

The BERGSTIK® II series (69173-406HLF) offers board-to-board style with push-pull fastening and tin finish contact, with operating temperature range of -65°C to 125°C and 3A current rating.

All BERGSTIK® alternatives carry active product status and RoHS compliance certification, supporting long-term design continuity and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 3-644695-6 be used as a direct replacement for the obsolete 644695-6?

A: Yes. The 3-644695-6 maintains identical specifications for connector type, contact type, number of positions, pitch, mounting type, shrouding, termination method, contact dimensions, insulation height, contact shape, operating temperature range, flammability rating, and moisture sensitivity level. The primary difference is product status (active versus obsolete) and RoHS compliance (ROHS3 versus non-compliant). The 3-644695-6 is the recommended direct replacement.

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

A: Both series share identical pitch (0.100"), position count (6), mounting type (through-hole), shrouding (unshrouded), and flammability rating (UL94 V-0). Primary differences include: contact material (copper alloy versus phosphor bronze), contact finish (tin-lead or tin versus gold or tin), operating temperature range (MTA-100: -55°C to 105°C; BERGSTIK®: -65°C to 125°C), and contact length variations. BERGSTIK® parts feature push-pull fastening and board-to-board style, while MTA-100 is board-to-cable/wire style.

Q: How do contact length variations affect part selection?

A: Contact length determines the depth of engagement with mating connectors and affects PCB stack-up clearance. The original 644695-6 specifies 0.295" (7.49mm) mating contact length. BERGSTIK® alternatives provide three options: 0.305" (7.75mm), 0.266" (6.75mm), and 0.260" (6.60mm). Selection must account for the mating connector depth and available PCB clearance. Shorter contact lengths reduce overall assembly height; longer contact lengths provide greater engagement depth.

Q: What is the significance of contact finish options (tin versus gold)?

A: Contact finish affects corrosion resistance, shelf life, and environmental performance. Tin finish (77311-422-06LF, 77311-424-06LF, 77311-427-06LF) provides standard performance for general applications. Gold or gold GXT™ finish (77311-122-06LF, 77311-124-06LF, 77311-127-06LF, 77311-822-06LF, 77311-824-06LF) offers enhanced corrosion resistance and extended shelf life, suitable for applications with extended storage periods or exposure to corrosive environments. The original 644695-6 uses tin-lead finish; the 3-644695-6 equivalent uses tin finish.

Q: Are all substitute parts RoHS compliant?

A: The original 644695-6 is RoHS non-compliant. The direct equivalent 3-644695-6 is ROHS3 compliant. All Amphenol ICC BERGSTIK® alternatives carry RoHS compliance certification. For applications requiring RoHS compliance, the 3-644695-6 or any BERGSTIK® series part is suitable.

Q: What is the difference between BERGSTIK® and BERGSTIK® II series?

A: The BERGSTIK® II series (69173-406HLF) differs from standard BERGSTIK® in contact material specification and fastening type. BERGSTIK® II features push-pull fastening and is designated for board-to-board applications. Standard BERGSTIK® series also features push-pull fastening and board-to-board style. Both maintain identical pitch, position count, and flammability rating. Contact length and finish options vary within each series.

Q: Can these connectors be used interchangeably in existing designs?

A: Interchangeability depends on specific design requirements. The 3-644695-6 provides direct interchangeability with the original 644695-6. BERGSTIK® alternatives require design review to confirm compatibility with mating connectors, PCB stack-up, and environmental requirements. Contact length variations and fastening type differences (kinked pin versus push-pull) must be evaluated for each application.

Q: What packaging options are available?

A: The original 644695-6 packaging is not specified. The 3-644695-6 is available in bulk packaging. BERGSTIK® series parts are available in bulk or bag packaging depending on part number. Packaging selection affects inventory management and component handling but does not affect electrical or mechanical performance.

Q: Are there current rating differences between parts?

A: The original 644695-6 specifies current rating as "varies by wire gauge." All BERGSTIK® alternatives specify 3A per contact. This represents a defined current rating specification for the BERGSTIK® series. Actual current capacity depends on wire gauge, insulation material, and application environment.

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