TE Connectivity AMP Connectors 4-644695-0 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 4-644695-0 is a rectangular connector header designed for through-hole mounting applications. This unshrouded, vertical-mount connector features 10 positions at 0.100" (2.54mm) pitch and is classified as a board-to-cable/wire interface component. The part is currently active in production and maintains full inventory availability. Substitute parts are identified for applications requiring alternative contact materials, finishes, mounting styles, or enhanced operating temperature ranges while maintaining core electrical and mechanical compatibility.

Substiute Parts

4-644695-0

TE Connectivity AMP ConnectorsIn Stock: 9254-644695-0 Datasheet

Current PartRFQ

77311-122-10LF

Amphenol ICC (FCI)In Stock: 240377311-122-10LF Datasheet

SimilarRFQ

77311-124-10LF

Amphenol ICC (FCI)In Stock: 222377311-124-10LF Datasheet

SimilarRFQ

77311-427-10LF

Amphenol ICC (FCI)In Stock: 75177311-427-10LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 4-644695-0 are qualified based on the following core parameters that determine functional compatibility:

Critical Matching Parameters:

• Number of Positions: 10
• Pitch - Mating: 0.100" (2.54mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Connector Type: Header
• Shrouding: Unshrouded
• Number of Rows: 1
• Insulation Height: 0.100" (2.54mm)
• Contact Shape: Square
• Insulation Material: Thermoplastic
• Material Flammability Rating: UL94 V-0
• Moisture Sensitivity Level: 1 (Unlimited)

Parameters Permitted to Vary:

• Manufacturer and Series designation
• Style (Board to Cable/Wire vs. Board to Board)
• Contact Material (Copper Alloy vs. Phosphor Bronze)
• Contact Finish (Tin vs. Gold/GXT™)
• Contact Finish Thickness
• Contact Length dimensions (mating and post)
• Overall Contact Length
• Operating Temperature Range (extended range acceptable)
• Current Rating specification format
• Termination method (Solder vs. Kinked Pin, Solder)
• Fastening Type
• Insulation Color
• Packaging format (Bulk vs. Bag)

The three substitute parts (77311-122-10LF, 77311-124-10LF, 77311-427-10LF) are all manufactured by Amphenol ICC (FCI) from the BERGSTIK® series and maintain all critical matching parameters while offering variations in contact geometry, material composition, and operating specifications.

Parameter Comparison

Engineering Selection Recommendations

All four parts maintain active product status and comply with RoHS and UL94 V-0 flammability requirements, ensuring regulatory compliance across applications.

4-644695-0 (TE Connectivity MTA-100): Select this part for applications requiring board-to-cable/wire connections with kinked pin termination. The copper alloy contact material with 150.0µin tin finish provides robust corrosion resistance. Operating temperature range of -55°C to 105°C is suitable for standard industrial and consumer applications. The 250VAC voltage rating specification is explicitly defined.

77311-122-10LF (Amphenol ICC BERGSTIK®): Select this part for board-to-board applications requiring gold or GXT™ contact finish on mating surfaces. The phosphor bronze contact material with push-pull fastening provides enhanced mechanical retention. Extended operating temperature range of -65°C to 125°C accommodates demanding thermal environments. Higher inventory availability (2312 pcs) supports high-volume procurement.

77311-124-10LF (Amphenol ICC BERGSTIK®): Select this part for board-to-board applications with shorter overall contact length (0.480" vs. 0.505"). Gold or GXT™ mating finish and phosphor bronze material provide equivalent performance to 77311-122-10LF with reduced mating contact length (0.266" vs. 0.305"). Extended operating temperature range of -65°C to 125°C. Inventory availability of 2183 pcs supports production requirements.

77311-427-10LF (Amphenol ICC BERGSTIK®): Select this part for board-to-board applications with the shortest overall contact length (0.465"). Tin finish on mating surface matches the main part specification. Phosphor bronze contact material and push-pull fastening provide mechanical advantages. Extended operating temperature range of -65°C to 125°C. Packaged in bags rather than bulk format. Lowest inventory availability (705 pcs) among substitutes.

Frequently Asked Questions (FAQ)

Q: Can 77311-122-10LF, 77311-124-10LF, or 77311-427-10LF be used as direct replacements for 4-644695-0?

A: These parts share identical pitch (0.100"), position count (10), mounting type (through hole), and core electrical characteristics. However, they differ in connector style (board-to-board vs. board-to-cable/wire), contact material (phosphor bronze vs. copper alloy), contact finish (gold vs. tin), and contact geometry. Selection depends on whether the application requires board-to-cable/wire or board-to-board connectivity and whether the contact length variations are compatible with the mating connector design.

Q: What is the significance of the contact length differences between these parts?

A: Contact length directly affects mating depth and engagement with receptacle contacts. The main part 4-644695-0 has a mating contact length of 0.295" (7.49mm). Substitute parts range from 0.260" to 0.305" (6.60mm to 7.75mm). These variations require verification against the mating connector specification to ensure proper electrical contact and mechanical stability. Shorter contact lengths may not engage sufficiently with deeper receptacles, while longer lengths may cause over-insertion.

Q: Why do the substitute parts have extended operating temperature ranges?

A: The substitute parts (77311-122-10LF, 77311-124-10LF, 77311-427-10LF) are rated for -65°C to 125°C compared to the main part's -55°C to 105°C. This extended range reflects the phosphor bronze contact material and BERGSTIK® series design characteristics. Applications requiring operation at temperatures below -55°C or above 105°C should select substitute parts with the extended range.

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

A: The main part 4-644695-0 features tin finish (150.0µin thickness) on mating contacts. Substitute parts 77311-122-10LF and 77311-124-10LF feature gold or GXT™ finish (30.0µin thickness) on mating contacts, while 77311-427-10LF features tin finish (78.7µin thickness). Gold finishes provide superior corrosion resistance and lower contact resistance in low-signal applications. Tin finishes are suitable for general-purpose applications with adequate contact pressure. The choice depends on environmental exposure and signal integrity requirements.

Q: Are there packaging differences between these parts?

A: The main part and 77311-122-10LF and 77311-124-10LF are supplied in bulk packaging. Part 77311-427-10LF is supplied in bag packaging. Packaging format affects handling, storage, and integration into assembly processes. Bulk packaging is typically preferred for high-volume automated assembly, while bag packaging may be suitable for lower-volume or manual assembly operations.

Q: What does "push-pull fastening" mean on the substitute parts?

A: Push-pull fastening refers to a mechanical locking mechanism on the connector housing that secures mated connectors together. The main part 4-644695-0 does not specify a fastening type, indicating it relies on friction fit or is designed for applications without mechanical locking. The substitute parts include push-pull fastening, which provides positive mechanical retention and prevents accidental disconnection. This feature is beneficial in applications subject to vibration or mechanical stress.

Q: How do the current ratings differ between these parts?

A: The main part 4-644695-0 specifies current rating as "varies by wire gauge," indicating the current capacity depends on the wire gauge used in the cable assembly. The substitute parts specify a fixed current rating of 3A per contact, independent of wire gauge. This fixed specification simplifies design calculations for board-to-board applications but requires verification that 3A per contact meets application requirements.

Q: Are all these parts RoHS compliant?

A: Yes. The main part 4-644695-0 is ROHS3 compliant. All substitute parts (77311-122-10LF, 77311-124-10LF, 77311-427-10LF) are RoHS compliant. All parts meet UL94 V-0 flammability requirements and have moisture sensitivity level 1 (unlimited), indicating no special moisture handling is required during storage or assembly.

Q: What is the difference between board-to-cable/wire and board-to-board connector styles?

A: Board-to-cable/wire connectors (4-644695-0) are designed to mate with cable assemblies or wire harnesses. The kinked pin termination is specifically designed for soldering to wires. Board-to-board connectors (77311-122-10LF, 77311-124-10LF, 77311-427-10LF) are designed to mate with receptacle connectors on another printed circuit board. The style selection depends on whether the application requires connection to a cable assembly or to another PCB.

Q: Which substitute part should be selected for maximum inventory availability?

A: Part 77311-122-10LF offers the highest inventory availability with 2312 pcs in stock, followed by 77311-124-10LF with 2183 pcs. The main part 4-644695-0 has 861 pcs available. Part 77311-427-10LF has the lowest availability with 705 pcs. For applications with high-volume requirements, 77311-122-10LF is the preferred substitute from an inventory perspective.