TE Connectivity 644694-6 Equivalent & Substitute Parts

Part Overview

The TE Connectivity 644694-6 is a rectangular connector header manufactured by TE Connectivity AMP Connectors, classified within the MTA-100 series. This component is a through-hole, right-angle connector header with 6 positions at 0.100" (2.54mm) pitch, designed for board-to-cable/wire applications. The part is currently listed as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement needs.

Substiute Parts

644694-6

TE Connectivity AMP ConnectorsIn Stock: 852644694-6 Datasheet

Current PartRFQ

3-644694-6

TE Connectivity AMP ConnectorsIn Stock: 10123-644694-6 Datasheet

DirectRFQ

929500-01-06

3MIn Stock: 1143929500-01-06 Datasheet

SimilarRFQ

929500-01-06-RK

3MIn Stock: 914929500-01-06-RK Datasheet

SimilarRFQ

929550-01-06-EU

3MIn Stock: 800929550-01-06-EU Datasheet

SimilarRFQ

929550-01-06-I

3MIn Stock: 1300929550-01-06-I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TE Connectivity 644694-6 is determined by the following critical parameters that must align across candidate parts:

Primary Matching Criteria:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 6
• Number of Rows: 1
• Connector Type: Header with Male Pin contacts
• Mounting Type: Through Hole, Right Angle
• Contact Shape: Square
• Material Flammability Rating: UL94 V-0

Secondary Compatibility Factors:

• Operating Temperature Range: Minimum -55°C to 105°C (or compatible subset)
• Voltage Rating: 250VAC or higher
• Termination: Solder-compatible
• Contact Material: Copper Alloy

The identified substitute parts maintain these core electrical and mechanical parameters, enabling direct functional replacement in applications originally designed for the 644694-6. Variations in contact finish, insulation material, and connector style (board-to-cable versus board-to-board) represent acceptable engineering trade-offs based on application requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 3-644694-6

The 3-644694-6 is the direct equivalent to the obsolete 644694-6, manufactured by TE Connectivity within the same MTA-100 series. This part maintains identical electrical and mechanical specifications with the following advantages:

• Active product status with current manufacturing support
• ROHS3 compliance, meeting modern regulatory requirements
• Identical pitch, position count, mounting configuration, and operating temperature range
• Contact finish changed from Tin-Lead to Tin, representing a lead-free upgrade
• Higher inventory availability (917 units in stock versus 842 for the original part)

Secondary Recommendations: 3M 929 Series Headers

The 3M 929 series headers (929500-01-06, 929500-01-06-RK, 929550-01-06-EU, 929550-01-06-I) provide functional equivalence with the following considerations:

929500-01-06 and 929500-01-06-RK: These parts maintain the 6-position, 0.100" pitch configuration with through-hole right-angle mounting. The 929500-01-06-RK variant is preferred due to active product status. Operating temperature range is -40°C to 105°C, which is acceptable for applications not requiring the full -55°C lower limit. Contact finish options include Tin-Lead (929500-01-06) and Tin (929500-01-06-RK).

929550-01-06-EU and 929550-01-06-I: These variants provide gold-plated contacts (10.0µin thickness) for enhanced corrosion resistance and contact reliability. Both maintain active product status with identical pitch and position specifications. The 929550-01-06-I variant uses glass-filled polyester insulation, while 929550-01-06-EU uses PCT insulation material.

Compliance Considerations:

The original 644694-6 is RoHS non-compliant. For applications subject to RoHS regulations, the 3-644694-6 (ROHS3 compliant) is the appropriate selection. The 3M 929 series parts do not specify RoHS status in the provided data and should be evaluated against specific regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 3-644694-6 be used as a direct replacement for the 644694-6?

A: Yes. The 3-644694-6 is manufactured by TE Connectivity in the same MTA-100 series and maintains identical electrical and mechanical specifications including pitch (0.100"), position count (6), mounting type (through-hole right-angle), and operating temperature range (-55°C to 105°C). The primary difference is the contact finish upgrade from Tin-Lead to Tin and active product status.

Q: What is the difference between the TE Connectivity MTA-100 series and the 3M 929 series substitutes?

A: Both series maintain the critical 0.100" (2.54mm) pitch and 6-position configuration. The MTA-100 series is designed for board-to-cable/wire applications, while the 3M 929 series is designed for board-to-board applications. The 929 series includes a push-pull fastening mechanism not present in the MTA-100. Contact lengths differ slightly: MTA-100 mating contact length is 0.260" (6.60mm) versus 929 series 0.295" (7.49mm).

Q: Are there RoHS compliance differences between these substitutes?

A: Yes. The 3-644694-6 is ROHS3 compliant, making it suitable for applications requiring RoHS certification. The original 644694-6 is RoHS non-compliant. The 3M 929 series parts do not specify RoHS status in available documentation and should be evaluated against specific regulatory requirements for your application.

Q: What is the significance of contact finish variations (Tin-Lead, Tin, and Gold)?

A: Contact finish affects solderability, corrosion resistance, and contact reliability. Tin-Lead finishes are traditional but subject to RoHS restrictions. Tin finishes provide lead-free compliance with equivalent performance. Gold finishes (929550-01-06-EU and 929550-01-06-I) provide superior corrosion resistance and are preferred for high-reliability applications or environments with moisture exposure.

Q: Can I use the 3M 929 series in applications originally designed for the TE Connectivity MTA-100?

A: Functional compatibility exists due to matching pitch, position count, and mounting type. However, design verification is required for the following differences: board-to-board versus board-to-cable application style, push-pull fastening mechanism in the 929 series, and slightly longer contact lengths in the 929 series. These differences may require PCB layout or connector housing modifications.

Q: What is the operating temperature difference between the 644694-6 and 3M 929 series substitutes?

A: The 644694-6 operates from -55°C to 105°C. The 3M 929 series operates from -40°C to 105°C. The 15°C difference at the lower temperature limit is acceptable for most general-purpose applications. Applications requiring operation below -40°C must use the TE Connectivity 3-644694-6 or original 644694-6.

Q: Is the 929500-01-06 still available for new designs?

A: The 929500-01-06 is listed as Last Time Buy status, indicating limited availability and no new production. For new designs, the 929500-01-06-RK (active status) is the preferred 3M alternative, offering identical specifications with current manufacturing support.

Q: What packaging options are available for these substitutes?

A: All identified substitutes are available in bulk packaging. The original 644694-6 packaging type is not specified in the provided data. Bulk packaging is standard for these connector headers and is suitable for manufacturing and assembly operations.