TE Connectivity 3-644695-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 3-644695-6 is an unshrouded rectangular connector header designed for through-hole mounting applications. This connector features 6 vertical positions with 0.100" (2.54mm) pitch spacing, male pin contact type, and kinked pin solder termination. The part is classified as board-to-cable/wire style and operates across a temperature range of -55°C to 105°C with a 250VAC voltage rating. Product status is Active with full RoHS3 compliance and MSL Level 1 rating. Equivalent and substitute parts are identified based on matching core electrical and mechanical parameters including connector type, pitch, position count, mounting method, and contact configuration.

Substiute Parts

3-644695-6

TE Connectivity AMP ConnectorsIn Stock: 8823-644695-6 Datasheet

Current PartRFQ

77311-122-06LF

Amphenol ICC (FCI)In Stock: 198777311-122-06LF Datasheet

SimilarRFQ

77311-124-06LF

Amphenol ICC (FCI)In Stock: 110877311-124-06LF Datasheet

SimilarRFQ

77311-127-06LF

Amphenol ICC (FCI)In Stock: 86277311-127-06LF Datasheet

SimilarRFQ

77311-822-06LF

Amphenol ICC (FCI)In Stock: 104977311-822-06LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TE Connectivity 3-644695-6 are identified from the Amphenol ICC (FCI) BERGSTIK® series based on matching core parameters. All substitute parts share the following critical specifications with the main part:

Matching Parameters:

• Connector Type: Header
• Contact Type: Male Pin
• Number of Positions: 6
• Number of Rows: 1
• Pitch - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole
• Shrouding: Unshrouded
• Insulation Height: 0.100" (2.54mm)
• Contact Shape: Square
• Insulation Material: Thermoplastic
• Material Flammability Rating: UL94 V-0
• Moisture Sensitivity Level: 1 (Unlimited)
• ECCN: EAR99
• HTSUS: 8536.69.4040

Substitute Parts:

• 77311-122-06LF (Amphenol ICC)
• 77311-124-06LF (Amphenol ICC)
• 77311-127-06LF (Amphenol ICC)
• 77311-822-06LF (Amphenol ICC)

Variations among substitute parts exist in contact length dimensions, contact finish specifications, and fastening type (Push-Pull vs. Kinked Pin). These variations address different application requirements while maintaining electrical and mechanical compatibility at the core connector interface.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 77311-122-06LF and 77311-822-06LF

The Amphenol ICC 77311-122-06LF and 77311-822-06LF are direct functional equivalents for applications requiring board-to-board connectivity. Both parts maintain identical pitch spacing, position count, and through-hole mounting configuration. These parts feature an extended operating temperature range (-65°C to 125°C) compared to the TE part (-55°C to 105°C), providing enhanced thermal performance. Both are RoHS Compliant with MSL Level 1 rating. The primary distinction between these two options is contact finish thickness on the mating surface: 77311-122-06LF provides 30.0µin (0.76µm) gold finish, while 77311-822-06LF provides 15.0µin (0.38µm) gold finish. Selection between these should be based on specific contact durability and mating cycle requirements.

Secondary Substitutes: 77311-124-06LF and 77311-127-06LF

The Amphenol ICC 77311-124-06LF and 77311-127-06LF are suitable alternatives for applications with space constraints or specific contact engagement depth requirements. These parts feature shorter overall contact lengths (0.480" and 0.465" respectively) compared to the main part (0.505"). Both maintain the same pitch, position count, and through-hole mounting. Operating temperature range extends to -65°C to 125°C. The 77311-124-06LF carries ROHS3 Compliant status, while 77311-127-06LF is RoHS Compliant. Both feature 30.0µin (0.76µm) gold mating finish and are suitable for applications where reduced insertion depth is required.

Compliance Considerations

All substitute parts maintain UL94 V-0 flammability rating and MSL Level 1 classification. The TE part carries ROHS3 Compliant status. Amphenol substitutes carry either RoHS Compliant or ROHS3 Compliant designations. All parts share identical ECCN (EAR99) and HTSUS (8536.69.4040) classifications. The 77311-127-06LF carries REACH Affected status, while 77311-122-06LF and 77311-124-06LF are REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol 77311 series parts directly replace the TE 3-644695-6 in existing designs?

A: The Amphenol BERGSTIK® 77311 series parts are functionally equivalent at the connector interface level, sharing identical pitch (0.100"), position count (6), mounting type (through-hole), and contact configuration (male pin, unshrouded). However, design review is necessary to confirm compatibility with specific application requirements, particularly regarding contact length dimensions, fastening type differences (Push-Pull vs. Kinked Pin), and board-to-board versus board-to-cable/wire style differences.

Q: What are the key dimensional differences between substitute options?

A: Contact length variations exist among the substitute parts. The 77311-122-06LF and 77311-822-06LF provide the longest overall contact length at 0.525" (13.34mm), compared to the main part at 0.505" (12.83mm). The 77311-124-06LF provides 0.480" (12.19mm), and the 77311-127-06LF provides the shortest at 0.465" (11.81mm). These dimensional differences affect mating depth and should be evaluated against PCB layout and connector pocket specifications.

Q: How do contact finish specifications differ among the options?

A: The TE 3-644695-6 features tin mating finish at 150.0µin (3.81µm) thickness. All Amphenol substitutes feature gold or gold GXT™ mating finish with varying thicknesses: 77311-122-06LF and 77311-124-06LF provide 30.0µin (0.76µm), while 77311-822-06LF provides 15.0µin (0.38µm). Gold finish provides enhanced corrosion resistance and lower contact resistance compared to tin, with thickness affecting durability across mating cycles.

Q: What is the difference between Push-Pull fastening and Kinked Pin termination?

A: The TE 3-644695-6 uses kinked pin solder termination, where pins are bent for through-hole PCB insertion and soldering. All Amphenol substitutes feature Push-Pull fastening with straight solder termination. Push-Pull fastening provides mechanical retention and alignment during mating, while kinked pins rely on solder joint strength for retention. Application requirements determine which termination style is appropriate.

Q: Are there temperature rating differences between the main part and substitutes?

A: The TE 3-644695-6 operates across -55°C to 105°C. All Amphenol substitutes extend this range to -65°C to 125°C, providing broader thermal operating envelope. Applications requiring operation at the extended temperature extremes benefit from the Amphenol options, while applications within the TE temperature range are fully compatible with either option.

Q: What is the significance of REACH and RoHS compliance status differences?

A: The TE 3-644695-6 carries ROHS3 Compliant status with Vendor Undefined REACH status. Amphenol substitutes carry either RoHS Compliant or ROHS3 Compliant designations. The 77311-127-06LF is REACH Affected, while 77311-122-06LF and 77311-124-06LF are REACH Unaffected. Applications subject to REACH regulations should confirm compliance requirements with specific substitute selection.

Q: How do current ratings compare across the options?

A: The TE 3-644695-6 specifies current rating as "Varies by Wire Gauge," indicating current capacity depends on connected wire specifications. All Amphenol substitutes specify 3A per Contact, providing defined current capacity independent of wire gauge. Applications requiring specific current ratings should confirm that the 3A per contact specification meets design requirements.

Q: What inventory availability exists for these substitute parts?

A: The TE 3-644695-6 has 831 pieces in stock. Amphenol substitutes show varying availability: 77311-122-06LF has 1960 pieces, 77311-124-06LF has 1027 pieces, 77311-127-06LF has 758 pieces, and 77311-822-06LF has 940 pieces. Higher inventory levels for Amphenol options may provide supply chain advantages for high-volume applications.