TE Connectivity AMP Connectors 3-644457-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 3-644457-8 is a rectangular connector header classified as an 8-position, right-angle, through-hole male pin connector with 0.100" (2.54mm) pitch spacing. This connector is part of the MTA-100 series and is designed for board-to-cable/wire applications with solder termination.

The 3-644457-8 carries an obsolete product status, making it necessary to identify equivalent and substitute components for ongoing design requirements and production continuity. Substitute parts must maintain compatibility across critical electrical and mechanical parameters including pitch spacing, number of positions, mounting type, termination method, and operating temperature range.

Substiute Parts

3-644457-8

TE Connectivity AMP ConnectorsIn Stock: 9003-644457-8 Datasheet

Current PartRFQ

0022122081

MolexIn Stock: 49270022122081 Datasheet

SimilarRFQ

929500-01-08

3MIn Stock: 826929500-01-08 Datasheet

SimilarRFQ

929500-01-08-RK

3MIn Stock: 751929500-01-08-RK Datasheet

SimilarRFQ

929550-01-08-EU

3MIn Stock: 959929550-01-08-EU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3-644457-8 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Compatibility Criteria:

• Pitch spacing: 0.100" (2.54mm)
• Number of positions: 8
• Number of rows: 1
• Connector type: Header with male pin contacts
• Mounting type: Through hole, right angle
• Termination method: Solder
• Contact shape: Square
• Shrouding: Unshrouded
• Material flammability rating: UL94 V-0

Secondary Compatibility Considerations:

• Operating temperature range overlap
• Contact finish material (tin or gold acceptable for general purpose applications)
• Insulation material composition
• RoHS3 compliance status

The substitute parts identified maintain these core parameters while offering variations in contact length, insulation height, contact finish thickness, and insulation material composition. These variations do not affect the fundamental substitutability for standard board-to-cable interconnection applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute Recommendation: 929500-01-08-RK (3M)

The 3M 929500-01-08-RK is the preferred substitute for the obsolete TE Connectivity 3-644457-8. This part maintains all critical compatibility parameters including 8-position, 2.54mm pitch, through-hole right-angle mounting, and solder termination. The 929500-01-08-RK carries an active product status, ensuring long-term availability and supply chain continuity. Both parts feature UL94 V-0 flammability rating, ROHS3 compliance, and copper alloy contacts with tin finish. The operating temperature range of -40°C ~ 105°C covers the upper portion of the original part's specification, suitable for most general purpose applications. The 929500-01-08-RK is available in bulk packaging with 668 units in stock.

Secondary Substitute Recommendation: 929550-01-08-EU (3M)

The 3M 929550-01-08-EU serves as an alternative substitute with identical core mechanical and electrical compatibility. This part features gold contact finish on both mating and post surfaces, providing enhanced corrosion resistance compared to tin-finished alternatives. The 929550-01-08-EU maintains active product status and ROHS3 compliance. The gold finish may be advantageous for applications requiring extended shelf life or exposure to corrosive environments. This part is available with 911 units in stock.

Tertiary Substitute Recommendation: 0022122081 (Molex)

The Molex 0022122081 provides an alternative from a different manufacturer while maintaining core compatibility parameters. This part features gold contact finish on mating surfaces and carries active product status. The Molex part is available in bulk packaging with 4830 units in stock, offering superior availability. However, the operating temperature range is not specified in the provided data, requiring verification for applications with specific temperature requirements below -40°C.

Not Recommended: 929500-01-08 (3M)

The 3M 929500-01-08 carries a last-time-buy product status, indicating discontinued production and limited future availability. While functionally compatible, this part should not be selected for new designs or long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 929500-01-08-RK directly replace the obsolete 3-644457-8 in existing designs?

A: Yes. The 929500-01-08-RK maintains all critical compatibility parameters: 8-position configuration, 2.54mm pitch spacing, through-hole right-angle mounting, solder termination, and unshrouded design. Both parts feature square copper alloy contacts with tin finish and UL94 V-0 flammability rating. The primary difference is the insulation material composition (PCT versus thermoplastic), which does not affect functional compatibility for standard board-to-cable interconnection applications.

Q: What is the difference between tin-finished and gold-finished contacts?

A: Tin-finished contacts (929500-01-08-RK) provide cost-effective performance for general purpose applications with standard shelf life requirements. Gold-finished contacts (929550-01-08-EU) offer enhanced corrosion resistance and extended shelf life, making them suitable for applications with extended storage periods or exposure to corrosive environments. Both finishes are acceptable for the 2.54mm pitch header application.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance certification, matching the compliance status of the original 3-644457-8. This ensures compatibility with regulatory requirements for electronic equipment manufacturing.

Q: What is the significance of the breakaway connector type in the 3M parts?

A: The breakaway feature in the 3M 929 series headers allows individual pins to be separated from the connector body if required. This feature does not affect the standard mating interface and does not prevent direct substitution for applications using the full 8-position connector.

Q: Why is the operating temperature range different between the original part and substitutes?

A: The original TE Connectivity 3-644457-8 specifies -55°C ~ 105°C, while the 3M substitutes specify -40°C ~ 105°C. The 3M parts cover the upper portion of the original specification. For applications requiring operation below -40°C, the original part specification should be verified against actual application requirements. Most general purpose applications operate within the -40°C ~ 105°C range covered by the substitute parts.

Q: Is the Molex 0022122081 suitable for applications requiring low-temperature operation?

A: The operating temperature range for the Molex 0022122081 is not specified in the available technical data. For applications with specific low-temperature requirements, the Molex part should not be selected without obtaining complete temperature specification documentation from the manufacturer.

Q: What packaging options are available for the substitute parts?

A: All identified substitute parts are available in bulk packaging. The 929500-01-08-RK and 929550-01-08-EU are supplied in bulk with 668 and 911 units in stock respectively. The Molex 0022122081 is supplied in bulk with 4830 units in stock, offering the highest inventory availability.

Q: Can the substitute parts be used interchangeably in the same application?

A: Yes, within the constraints of specific application requirements. The 929500-01-08-RK and 929550-01-08-EU are fully interchangeable for standard applications. The Molex 0022122081 is interchangeable for applications not requiring operation below -40°C. Selection should be based on product status (active versus last-time-buy), contact finish requirements (tin versus gold), and inventory availability.