TE Connectivity 1-644886-9 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 1-644886-9 is a rectangular connector header manufactured under the MTA-100 series. This through-hole vertical connector features 19 positions at 0.100" (2.54mm) pitch with male pin contacts and kinked pin solder termination. The part is classified as obsolete, necessitating identification of active equivalent alternatives from current manufacturers. Substitute parts must maintain electrical and mechanical compatibility while meeting modern compliance standards.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	19
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Shape	Square
Insulation Material	Thermoplastic
Operating Temperature Range	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Voltage Rating	250VAC
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 1-644886-9 are selected from the Amphenol ICC (FCI) BERGSTIK® series based on the following critical parameters:

Mandatory Matching Parameters:

Number of positions: 19
Pitch - mating: 0.100" (2.54mm)
Connector type: Header
Contact type: Male Pin
Mounting type: Through Hole
Termination: Solder
Contact shape: Square
Insulation material: Thermoplastic
Material flammability rating: UL94 V-0
Moisture sensitivity level: 1 (Unlimited)

Variable Parameters Defining Substitute Groups:

Contact length - mating (affects insertion depth and board clearance)
Contact finish - mating (gold or tin plating)
Contact finish thickness - mating (affects durability and conductivity)
Operating temperature range (extended range in substitutes)
Current rating per contact (3A in substitutes vs. variable in original)

The substitute parts are organized into three contact length groups based on mating contact length: 0.305" (7.75mm), 0.266" (6.75mm), and 0.260" (6.60mm). Within each group, variants differ by contact finish specification (gold or tin) and finish thickness.

Parameter Comparison

Parameter	1-644886-9 (TE)	77311-122-19LF	77311-124-19LF	77311-127-19LF	77311-422-19LF	77311-424-19LF	77311-427-19LF	77311-822-19LF	77311-824-19LF	77311-827-19LF
Manufacturer	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	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
Connector Type	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
Number of Positions	19	19	19	19	19	19	19	19	19	19
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)
Number of Rows	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
Termination	Kinked Pin, Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Contact Length - Mating	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)	0.260" (6.60mm)
Contact Length - Post	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)	0.120" (3.05mm)	0.114" (2.90mm)	0.105" (2.67mm)
Overall Contact Length	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)	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)	0.100" (2.54mm)	0.100" (2.54mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Tin	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold or Gold, GXT™
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	78.7µin (2.00µm)	78.7µin (2.00µm)	78.7µin (2.00µm)	15.0µin (0.38µm)	15.0µin (0.38µm)	15.0µin (0.38µm)
Contact Finish - Post	Not specified	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic
Operating Temperature	-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
Insulation Color	Natural	Black	Black	Black	Black	Black	Black	Black	Black	Black
Current Rating (Amps)	Varies by Wire Gauge	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact
Voltage Rating	250VAC	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified	Not specified
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant
Moisture Sensitivity Level	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
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

Engineering Selection Recommendations

All substitute parts listed are manufactured by Amphenol ICC (FCI) under the active BERGSTIK® series and maintain full RoHS compliance. The original TE Connectivity 1-644886-9 is classified as obsolete, making substitution necessary for new designs and ongoing production.

Selection Criteria by Application:

For applications requiring maximum mating contact length (0.305" / 7.75mm):

77311-122-19LF: Gold finish, 30.0µin thickness
77311-422-19LF: Tin finish, 78.7µin thickness
77311-822-19LF: Gold finish, 15.0µin thickness

For applications requiring moderate mating contact length (0.266" / 6.75mm):

77311-124-19LF: Gold finish, 30.0µin thickness
77311-424-19LF: Tin finish, 78.7µin thickness
77311-824-19LF: Gold finish, 15.0µin thickness

For applications requiring minimum mating contact length (0.260" / 6.60mm):

77311-127-19LF: Gold finish, 30.0µin thickness
77311-427-19LF: Tin finish, 78.7µin thickness
77311-827-19LF: Gold finish, 15.0µin thickness

All substitute parts provide extended operating temperature range (-65°C ~ 125°C) compared to the original part (-55°C ~ 105°C), offering improved thermal performance. Contact finish selection between gold and tin depends on application-specific corrosion resistance and conductivity requirements. All parts maintain UL94 V-0 flammability rating and MSL 1 moisture sensitivity classification.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC BERGSTIK® parts directly replace the TE Connectivity MTA-100 1-644886-9?

A: Yes, all listed Amphenol ICC BERGSTIK® parts are direct functional replacements. They maintain identical pitch (0.100" / 2.54mm), position count (19), connector type (header), contact type (male pin), mounting method (through hole), and termination (solder). The primary design differences are contact length variations and contact finish specifications, which must be selected based on specific board layout and environmental requirements.

Q: What is the significance of the different contact length options?

A: Contact length determines the insertion depth into the mating connector and affects board clearance. The original part specifies 0.295" (7.49mm) mating contact length. Substitute options provide 0.305" (7.75mm), 0.266" (6.75mm), or 0.260" (6.60mm). Selection depends on the mating connector specifications and available board space. Longer contacts provide greater engagement depth; shorter contacts reduce overall connector height.

Q: What is the difference between gold and tin contact finishes?

A: Contact finish affects corrosion resistance and electrical conductivity. Gold finishes (77311-122-19LF, 77311-124-19LF, 77311-127-19LF, 77311-822-19LF, 77311-824-19LF, 77311-827-19LF) provide superior corrosion resistance and are suitable for applications with extended shelf life or harsh environments. Tin finishes (77311-422-19LF, 77311-424-19LF, 77311-427-19LF) offer cost efficiency and are suitable for applications with shorter shelf life and controlled environments.

Q: What do the finish thickness values mean?

A: Contact finish thickness affects durability and wear resistance. The original part specifies 30.0µin (0.76µm) gold thickness. Substitute parts offer three thickness options: 30.0µin (0.76µm), 78.7µin (2.00µm), and 15.0µin (0.38µm). Thicker finishes (78.7µin) provide extended contact life under repeated mating cycles; thinner finishes (15.0µin) reduce material cost while maintaining functional performance for standard applications.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed Amphenol ICC BERGSTIK® substitute parts are RoHS compliant. The original TE Connectivity part is ROHS3 compliant, and all substitutes meet current RoHS standards, ensuring compatibility with modern procurement and environmental regulations.

Q: What is the operating temperature difference between the original and substitute parts?

A: The original TE Connectivity 1-644886-9 operates from -55°C to 105°C. All Amphenol ICC BERGSTIK® substitutes operate from -65°C to 125°C, providing an extended temperature range of 10°C lower minimum and 20°C higher maximum. This extended range offers improved performance in extreme temperature applications.

Q: How do I select between the different substitute part numbers?

A: Selection is determined by three primary factors: (1) required mating contact length based on mating connector specifications, (2) contact finish preference (gold for corrosion resistance or tin for cost efficiency), and (3) finish thickness based on expected mating cycle count and environmental conditions. Consult your mating connector specifications and application requirements to determine the appropriate substitute.

Q: Are there inventory considerations when selecting a substitute?

A: Yes, inventory levels vary across substitute parts. Current stock ranges from 633 to 1041 pieces. For high-volume production, parts with higher inventory (77311-427-19LF with 1001 pieces, 77311-827-19LF with 1041 pieces, 77311-822-19LF with 1026 pieces) may offer supply chain advantages.

Q: What is the difference between the packaging options listed?

A: Substitute parts are available in Bag or Bulk packaging. Packaging selection depends on production volume and handling requirements. Bag packaging is suitable for standard production runs; Bulk packaging is appropriate for high-volume manufacturing operations.

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