TE Connectivity 641120-3 Rectangular Connector Header Equivalent & Substitute Parts

Part Overview

The TE Connectivity 641120-3 is a shrouded rectangular connector header designed for through-hole mounting in board-to-cable/wire applications. This 3-position connector operates within the MTA-156 series and features a 0.156" (3.96mm) pitch configuration with male pin contacts. The part is classified as Active product status and serves general purpose and industrial applications requiring reliable solder termination and friction lock fastening.

Substitute parts are identified to address inventory availability, packaging preferences, and compliance requirements while maintaining electrical and mechanical compatibility with the original specification.

Substiute Parts

641120-3

TE Connectivity AMP ConnectorsIn Stock: 875641120-3 Datasheet

Current PartRFQ

3-641120-3

TE Connectivity AMP ConnectorsIn Stock: 31593-641120-3 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution between 641120-3 and 3-641120-3 is based on identical electrical and mechanical parameters across all critical dimensions and performance characteristics. Both parts share the same series designation (MTA-156), connector type (Header), contact configuration (3-position male pin), pitch specification (0.156"), mounting methodology (through-hole solder), and operating envelope (-55°C ~ 105°C, 600VAC).

The primary differentiators between these parts are packaging format and compliance status. The substitute part 3-641120-3 is supplied in bulk packaging and carries ROHS3 compliance certification, whereas the main part 641120-3 is RoHS non-compliant. Both parts maintain identical contact geometry, insulation material composition (Thermoplastic, Glass Filled), contact finish specifications (Gold mating surface, Tin or Tin-Lead post finish), and fastening mechanism (Friction Lock).

Substitution is valid when the following parameters are matched:

• Connector Type: Header
• Number of Positions: 3
• Pitch - Mating: 0.156" (3.96mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Shrouding: Shrouded - 1 Wall
• Voltage Rating: 600VAC
• Operating Temperature: -55°C ~ 105°C

Parameter Comparison

Engineering Selection Recommendations

Both 641120-3 and 3-641120-3 are Active status products manufactured by TE Connectivity within the MTA-156 series. Selection between these parts is determined by compliance requirements and packaging specifications.

The 641120-3 is suitable for applications where RoHS non-compliance is acceptable or where legacy system compatibility is required. This part is available in standard packaging with 774 units in current inventory.

The 3-641120-3 is the appropriate selection for applications requiring ROHS3 compliance certification. This substitute part is supplied in bulk packaging and maintains higher inventory availability with 3105 units in stock. The contact finish on the post differs slightly (Tin versus Tin-Lead), which does not affect electrical or mechanical compatibility within the specified operating parameters.

Both parts satisfy the same electrical performance envelope (600VAC, -55°C ~ 105°C), mechanical interface requirements (0.156" pitch, 3-position through-hole solder termination), and safety certifications (UL94 V-0 flammability rating).

Frequently Asked Questions (FAQ)

Q: Are 641120-3 and 3-641120-3 electrically interchangeable?

A: Yes. Both parts operate at identical voltage ratings (600VAC), current capacity (varies by wire gauge), and temperature range (-55°C ~ 105°C). The electrical performance is equivalent across all specified parameters.

Q: What is the difference in contact finish between these parts?

A: The 641120-3 features Tin-Lead post finish, while the 3-641120-3 features Tin post finish. Both maintain identical gold mating surface finish (15.0µin thickness). This difference does not affect solder joint reliability or electrical performance within the specified operating envelope.

Q: Why does the substitute part have higher inventory?

A: The 3-641120-3 is supplied in bulk packaging format, which typically results in larger stock quantities. The 641120-3 is supplied in standard packaging. Both are Active status products with equivalent availability from TE Connectivity.

Q: Can I use 3-641120-3 in place of 641120-3 in existing designs?

A: Yes, provided the design does not have specific RoHS non-compliance requirements. The 3-641120-3 is ROHS3 compliant, making it suitable for applications with regulatory compliance mandates. All mechanical and electrical parameters are identical.

Q: What does the packaging difference mean for my application?

A: The main part (641120-3) uses standard packaging, while the substitute (3-641120-3) uses bulk packaging. Bulk packaging typically accommodates higher-volume production runs and may offer cost advantages for large-quantity orders. Both deliver identical connector performance.

Q: Are both parts suitable for industrial applications?

A: Yes. Both 641120-3 and 3-641120-3 are rated for general purpose and industrial applications. The UL94 V-0 flammability rating and operating temperature range (-55°C ~ 105°C) support industrial deployment in both cases.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These connectors do not require special moisture control during storage, handling, or assembly.