TE Connectivity 644456-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644456-8 is a vertical connector header for through-hole mounting with 8 positions at 2.54mm pitch. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and production needs. The part features male pins, tin-lead contact finish, and operates across a temperature range of -55°C to 105°C with a 250VAC voltage rating. Equivalent parts maintain functional compatibility while substitute parts offer alternative configurations with differing mechanical or electrical characteristics within acceptable parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	644456-8
Manufacturer	TE Connectivity AMP Connectors
Series	MTA-100
Connector Type	Header
Contact Type	Male Pin
Number of Positions	8
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Operating Temperature Range	-55°C ~ 105°C
Voltage Rating	250VAC
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644456-8 is determined by the following critical parameters:

Primary Compatibility Criteria:

Connector type (Header)
Contact type (Male Pin)
Number of positions (8)
Pitch - mating (0.100" / 2.54mm)
Mounting type (Through Hole)
Termination method (Solder)
Insulation height (0.100" / 2.54mm)
Contact shape (Square)
Material flammability rating (UL94 V-0)

Secondary Consideration Parameters:

Operating temperature range
Contact length specifications (mating and post)
Contact material composition
Contact finish type and thickness
RoHS compliance status
Packaging format

The TE Connectivity 3-644456-8 serves as a direct equivalent with identical electrical and mechanical specifications but features RoHS compliance and active product status. The Amphenol ICC BERGSTIK® series (77311 base number) provides functional substitutes with compatible pitch, position count, and mounting characteristics. Variations within the BERGSTIK® series differ in contact length, contact finish composition, and packaging format while maintaining core compatibility parameters.

Parameter Comparison

Parameter	644456-8	3-644456-8	77311-122-08LF	77311-124-08LF	77311-127-08LF	77311-822-08LF	77311-824-08LF	77311-827-08LF
Manufacturer	TE Connectivity	TE Connectivity	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC	Amphenol ICC
Series	MTA-100	MTA-100	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®
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	8	8	8	8	8	8	8	8
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)
Number of Rows	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
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	—	—	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	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)
Contact Length - Post	0.110" (2.79mm)	0.110" (2.79mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)
Overall Contact Length	0.505" (12.83mm)	0.505" (12.83mm)	0.525" (13.34mm)	0.480" (12.19mm)	0.465" (11.81mm)	0.525" (13.34mm)	0.480" (12.19mm)	0.465" (11.81mm)
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)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Tin-Lead	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Finish Thickness - Mating	150.0µin (3.81µm)	150.0µin (3.81µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	15.0µin (0.38µm)	15.0µin (0.38µm)	15.0µin (0.38µm)
Contact Finish - Post	Tin-Lead	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
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
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
Insulation Color	Natural	Natural	Black	Black	Black	Black	Black	Black
Current Rating	Varies by Wire Gauge	Varies by Wire Gauge	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
Voltage Rating	250VAC	250VAC	—	—	—	—	—	—
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Equivalent:

The TE Connectivity 3-644456-8 is the primary equivalent for the obsolete 644456-8. Both parts share identical electrical and mechanical specifications within the MTA-100 series. The 3-644456-8 is currently in active production status with 14,385 units in stock. The primary distinction is RoHS compliance: the 3-644456-8 achieves RoHS compliance while the original 644456-8 does not. Contact finish differs slightly (Tin versus Tin-Lead), which does not affect functional compatibility. This part is suitable for direct replacement in new designs and production runs.

Amphenol ICC BERGSTIK® Series Substitutes:

The Amphenol ICC BERGSTIK® series (77311 base number) provides functional substitutes with compatible core parameters: 8 positions, 2.54mm pitch, through-hole mounting, and solder termination. All BERGSTIK® variants are RoHS compliant and in active production status. These parts feature phosphor bronze contact material and expanded operating temperature range (-65°C to 125°C) compared to the original specification (-55°C to 105°C).

Contact Length Variants:

BERGSTIK® parts are available in three contact length configurations:

77311-122-08LF and 77311-822-08LF: 0.305" mating length (longest)
77311-124-08LF and 77311-824-08LF: 0.266" mating length (medium)
77311-127-08LF and 77311-827-08LF: 0.260" mating length (shortest)

Selection of contact length variant depends on specific board-to-cable or board-to-board mating depth requirements.

Contact Finish Variants:

BERGSTIK® parts are available with two contact finish specifications:

Gold or Gold, GXT™ finish (77311-122-08LF, 77311-124-08LF, 77311-127-08LF, 77311-822-08LF, 77311-824-08LF, 77311-827-08LF): 30.0µin or 15.0µin thickness
Tin finish (77311-422-08LF, 77311-424-08LF, 77311-427-08LF): 78.7µin thickness

Packaging Considerations:

TE Connectivity parts are supplied in bulk packaging. Amphenol ICC BERGSTIK® parts are available in both bulk (77311-122-08LF, 77311-124-08LF, 77311-127-08LF, 77311-822-08LF, 77311-824-08LF) and bag packaging (77311-422-08LF, 77311-424-08LF, 77311-427-08LF, 77311-827-08LF) formats.

Compliance Status:

All recommended substitutes achieve RoHS compliance and carry active product status, addressing the obsolescence and compliance limitations of the original 644456-8.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity 3-644456-8 be used as a direct replacement for the 644456-8?

A: Yes. The 3-644456-8 is functionally equivalent with identical connector type, position count, pitch, mounting method, and termination. The primary differences are active product status and RoHS compliance. Contact finish differs (Tin versus Tin-Lead), which does not affect electrical or mechanical compatibility.

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 (2.54mm), position count (8), mounting type (through-hole), and termination method (solder). Primary differences include: contact material (Copper Alloy versus Phosphor Bronze), operating temperature range (-55°C to 105°C versus -65°C to 125°C), contact finish options (Tin-Lead versus Gold or Tin), and fastening type (none versus Push-Pull for BERGSTIK®). BERGSTIK® parts feature expanded temperature capability and are all RoHS compliant.

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

A: Contact length selection depends on the mating depth requirement. The 77311-122-08LF and 77311-822-08LF variants with 0.305" mating contact length accommodate deeper mating applications. The 77311-124-08LF and 77311-824-08LF variants with 0.266" mating contact length provide medium depth. The 77311-127-08LF and 77311-827-08LF variants with 0.260" mating contact length are for shallow mating applications. Verify your specific board-to-cable or board-to-board spacing requirement before selection.

Q: What is the difference between gold-plated and tin-plated BERGSTIK® contacts?

A: Gold-plated BERGSTIK® variants (77311-122-08LF, 77311-124-08LF, 77311-127-08LF, 77311-822-08LF, 77311-824-08LF, 77311-827-08LF) provide enhanced corrosion resistance and lower contact resistance. Tin-plated variants (77311-422-08LF, 77311-424-08LF, 77311-427-08LF) offer cost efficiency. Both finishes are suitable for general-purpose applications. Gold plating is specified at either 30.0µin or 15.0µin thickness depending on part number. Tin plating is specified at 78.7µin thickness.

Q: Are BERGSTIK® parts compatible with the original 644456-8 in terms of mating?

A: BERGSTIK® parts share the same 2.54mm pitch and 8-position configuration, enabling mechanical mating with compatible receptacles. However, the Push-Pull fastening feature on BERGSTIK® parts is not present on the original 644456-8. Verify that your mating receptacle is compatible with the specific BERGSTIK® variant selected, particularly regarding contact length and fastening mechanism.

Q: What is the operating temperature difference between the original 644456-8 and BERGSTIK® substitutes?

A: The original 644456-8 operates from -55°C to 105°C. All BERGSTIK® substitutes operate from -65°C to 125°C, providing expanded temperature capability. If your application requires operation below -55°C or above 105°C, BERGSTIK® parts are required.

Q: Are all recommended substitutes RoHS compliant?

A: Yes. The TE Connectivity 3-644456-8 and all Amphenol ICC BERGSTIK® variants listed are RoHS compliant. The original 644456-8 is RoHS non-compliant. If RoHS compliance is a design requirement, use the 3-644456-8 or any BERGSTIK® variant.

Q: What packaging options are available for these parts?

A: TE Connectivity 3-644456-8 is supplied in bulk packaging. Amphenol ICC BERGSTIK® parts are available in bulk packaging (77311-122-08LF, 77311-124-08LF, 77311-127-08LF, 77311-822-08LF, 77311-824-08LF) or bag packaging (77311-422-08LF, 77311-424-08LF, 77311-427-08LF, 77311-827-08LF). Select packaging format based on your procurement and inventory management requirements.

Q: Can I mix different BERGSTIK® variants in the same assembly?

A: Yes, provided that the mating receptacles accommodate the specific contact length and fastening characteristics of each variant. However, for consistency and simplified assembly procedures, using a single BERGSTIK® variant throughout an assembly is recommended.

Q: What is the current rating for these connectors?

A: The original 644456-8 current rating varies by wire gauge. BERGSTIK® substitutes are rated at 3A per contact. Verify that your application current requirements do not exceed the specified rating for the selected part.

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