TE Connectivity AMP Connectors 644694-9 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 644694-9 is a rectangular connector header designed for through-hole, right-angle mounting applications. This connector features 9 positions at 0.100" (2.54mm) pitch and is classified as part of the MTA-100 series. The part is currently listed as obsolete, necessitating identification of functionally equivalent substitute components for ongoing design and procurement requirements. Substitute parts must maintain compatibility with the original electrical specifications, mechanical dimensions, and mounting characteristics while accommodating modern component availability.

Substiute Parts

644694-9

TE Connectivity AMP ConnectorsIn Stock: 636644694-9 Datasheet

Current PartRFQ

929500-01-09

3MIn Stock: 1167929500-01-09 Datasheet

SimilarRFQ

929500-01-09-RK

3MIn Stock: 1057929500-01-09-RK Datasheet

SimilarRFQ

929550-01-09-EU

3MIn Stock: 847929550-01-09-EU Datasheet

SimilarRFQ

929550-01-09-I

3MIn Stock: 837929550-01-09-I Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TE Connectivity 644694-9 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Number of Positions: 9
• Pitch - Mating: 0.100" (2.54mm)
• Mounting Type: Through Hole, Right Angle
• Contact Type: Male Pin
• Number of Rows: 1
• Contact Shape: Square
• Contact Material: Copper Alloy
• Material Flammability Rating: UL94 V-0

Allowable Variations:

• Connector Type: Header or Header with Breakaway capability
• Insulation Material: Thermoplastic or engineered polymers (PBT, PCT)
• Contact Finish: Tin-Lead, Tin, or Gold plating
• Operating Temperature Range: Minimum -40°C (acceptable for -55°C requirement with thermal derating consideration)
• Style: Board to Cable/Wire or Board to Board
• Fastening Type: Variations permitted

The 3M 929 series connectors (929500-01-09, 929500-01-09-RK, 929550-01-09-I, 929550-01-09-EU) satisfy all mandatory matching parameters and are classified as equivalent substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 3M 929500-01-09-RK

The 3M 929500-01-09-RK is the preferred substitute for the TE Connectivity 644694-9. This part maintains active product status, ensuring long-term availability and supply chain stability. The connector satisfies all mandatory electrical and mechanical parameters, including 9-position configuration, 0.100" (2.54mm) pitch, through-hole right-angle mounting, and UL94 V-0 flammability rating. The Tin contact finish provides corrosion resistance suitable for general-purpose applications. The operating temperature range of -40°C to 105°C covers the upper operational boundary of the original specification.

Secondary Recommendation: 3M 929550-01-09-I or 929550-01-09-EU

The 3M 929550 series variants offer enhanced contact reliability through Gold plating on both mating and post surfaces. These parts are suitable for applications requiring superior corrosion resistance or extended service life in challenging environments. Both variants maintain active product status and full compliance with UL94 V-0 flammability requirements. The 929550-01-09-I variant uses PBT insulation material, while the 929550-01-09-EU variant uses PCT insulation, providing flexibility for thermal and mechanical performance requirements.

Alternative: 3M 929500-01-09

The 3M 929500-01-09 is functionally equivalent but carries Last Time Buy status, indicating limited future availability. This variant is suitable only for applications where immediate procurement is feasible and long-term supply is not a constraint.

Compliance Considerations:

All substitute parts maintain UL94 V-0 material flammability certification. The original TE Connectivity 644694-9 and 3M 929550-01-09-I are both RoHS non-compliant. Applications subject to RoHS requirements should confirm compliance status with the selected substitute before final design approval.

Frequently Asked Questions (FAQ)

Q: Can the 3M 929 series connectors directly replace the TE Connectivity 644694-9 in existing designs?

A: The 3M 929 series connectors are mechanically and electrically compatible with the TE Connectivity 644694-9 for applications operating within the -40°C to 105°C temperature range. The 9-position, 0.100" (2.54mm) pitch configuration, through-hole right-angle mounting, and square contact geometry are identical. Minor dimensional variations exist in contact length and insulation height; however, these do not affect mating compatibility with standard 0.100" (2.54mm) pitch receptacles.

Q: What is the significance of the contact finish differences between the substitute parts?

A: Contact finish affects corrosion resistance and electrical performance over time. Tin-Lead and Tin finishes provide standard corrosion protection suitable for general-purpose applications. Gold-plated contacts (929550 series) offer superior corrosion resistance and are recommended for applications with extended shelf life, high-humidity environments, or critical signal integrity requirements. The choice depends on application-specific environmental and reliability demands.

Q: Why do the substitute parts have different operating temperature minimums (-40°C versus -55°C)?

A: The TE Connectivity 644694-9 specifies -55°C minimum operating temperature, while the 3M 929 series specifies -40°C. For applications requiring operation below -40°C, thermal analysis and component derating calculations are necessary to confirm suitability. Most general-purpose applications operate within the -40°C to 105°C range covered by the 3M substitutes.

Q: Are there differences in insulation material between the substitute options?

A: Yes. The 3M 929500-01-09 and 929550-01-09-I use Polybutylene Terephthalate (PBT) with glass filler, while the 929500-01-09-RK and 929550-01-09-EU use Polycyclohexylenedimethylene Terephthalate (PCT). Both materials meet UL94 V-0 flammability requirements. PBT offers cost efficiency and proven reliability in standard applications. PCT provides enhanced thermal stability and dimensional consistency, particularly beneficial for high-temperature or precision-critical applications.

Q: What is the significance of the Breakaway feature in the 3M 929 series?

A: The Breakaway feature allows individual connector positions to be separated from the main header strip, enabling customization of connector configurations. This feature does not affect compatibility with standard 0.100" (2.54mm) pitch receptacles and provides design flexibility for applications requiring variable position counts.

Q: How do the current ratings compare between the original and substitute parts?

A: The TE Connectivity 644694-9 specifies current rating as "Varies by Wire Gauge," indicating current capacity depends on the wire gauge used in the application. The 3M 929 series specifies a fixed 2.5A current rating per contact. For applications requiring current capacity verification, the wire gauge and actual current requirements must be evaluated against the 2.5A specification of the substitute parts.

Q: Which substitute part should be selected for new designs?

A: For new designs, the 3M 929500-01-09-RK is recommended due to its active product status, ensuring long-term availability and supply chain continuity. For applications requiring enhanced corrosion resistance or extended service life, the 3M 929550-01-09-I or 929550-01-09-EU variants with Gold-plated contacts are appropriate alternatives.

Q: Are there any RoHS compliance considerations for substitute selection?

A: The TE Connectivity 644694-9 and 3M 929550-01-09-I are both RoHS non-compliant. Applications subject to RoHS directives should confirm the compliance status of the selected substitute with the manufacturer or supplier. The RoHS status of the 3M 929500-01-09, 929500-01-09-RK, and 929550-01-09-EU variants should be verified for specific regulatory requirements.