TM3RA1-66(51) Equivalent & Substitute Parts

Part Overview

The TM3RA1-66(51) is a modular jack connector manufactured by Hirose Electric Co Ltd, designed for 6-position 6-contact (6p6c) applications including RJ11, RJ12, RJ14, and RJ25 standards. This vertical, unshielded through-hole connector features a board lock mechanism and phosphor bronze contacts with gold finish. The part is classified as Last Time Buy, indicating discontinued production status and the necessity to identify compatible substitute components for ongoing design requirements and inventory planning.

Substiute Parts

TM3RA1-66(51)

Hirose Electric Co LtdIn Stock: 1034TM3RA1-66(51) Datasheet

Current PartRFQ

TM3RA1-66(50)

Hirose Electric Co LtdIn Stock: 1088TM3RA1-66(50) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TM3RA1-66(51) is determined by the following critical parameters:

• Base Product Number: Both the main part and substitute share the TM3R base designation, indicating compatibility within the Hirose TM-DSA series family
• Connector Type: Jack configuration for modular applications
• Contact Configuration: 6-position 6-contact (6p6c) standard
• Termination Method: Solder attachment to PCB
• RoHS Compliance: Environmental regulatory alignment
• Moisture Sensitivity Level: MSL 1 classification for storage and handling

The substitute TM3RA1-66(50) maintains these core parameters while differing in specific form factor characteristics (low profile black housing variant). Both components are manufactured by Hirose Electric Co Ltd and share the same base product lineage, ensuring functional compatibility within the modular connector ecosystem.

Parameter Comparison

Engineering Selection Recommendations

The TM3RA1-66(50) is the manufacturer-recommended substitute for the TM3RA1-66(51). Both components maintain RoHS compliance and identical MSL classification, ensuring regulatory and environmental compatibility. The TM3RA1-66(50) carries Active product status, providing ongoing availability and supply chain continuity compared to the Last Time Buy status of the primary part. Selection between these components should be based on specific form factor requirements, as the TM3RA1-66(50) is specified as a low-profile black variant. Both components share the TM3R base product designation and are suitable for 6p6c modular jack applications requiring solder termination.

Frequently Asked Questions (FAQ)

Q: Can the TM3RA1-66(50) directly replace the TM3RA1-66(51) in existing designs?

A: The TM3RA1-66(50) is the manufacturer-recommended substitute and shares the same base product number (TM3R), connector type (jack), and core electrical specifications. Physical form factor differences (low-profile black housing) must be evaluated against specific PCB layout and mechanical envelope constraints.

Q: What is the significance of the Last Time Buy status for the TM3RA1-66(51)?

A: Last Time Buy indicates discontinued production. The TM3RA1-66(50) with Active status provides a path for ongoing supply and future design iterations.

Q: Are both parts RoHS compliant?

A: Yes, both the TM3RA1-66(51) and TM3RA1-66(50) are RoHS compliant with MSL 1 (Unlimited) classification.

Q: What are the key differences between these two part numbers?

A: The primary differences are product status (Last Time Buy vs. Active) and form factor designation (standard vertical unshielded vs. low-profile black variant). Both maintain identical compliance certifications and base product lineage.

Q: Are there any packaging or inventory considerations?

A: The TM3RA1-66(51) has 926 pieces in stock (Last Time Buy status), while the TM3RA1-66(50) has 1066 pieces available with Active product status, providing greater long-term availability.