3M 81068-660C04-RB Equivalent & Substitute Parts

Part Overview

The 3M 81068-660C04-RB is a rectangular connector header designed for surface mount applications. This 68-position connector operates at a 0.050" (1.27mm) pitch and features a shrouded 4-wall design with board lock functionality. The part is classified as obsolete, making identification of equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

81068-660C04-RB

3MIn Stock: 82081068-660C04-RB Datasheet

Current PartRFQ

81068-660C04-RB

3MIn Stock: 82081068-660C04-RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 81068-660C04-RB is determined by strict equivalence across the following critical parameters:

• Connector Configuration: 68 positions, 2 rows, 0.050" (1.27mm) pitch, 0.100" (2.54mm) row spacing
• Mounting and Termination: Surface mount with solder termination
• Mechanical Design: Shrouded 4-wall construction with board lock features
• Contact Specifications: Male pins with gold mating finish and tin post finish
• Material and Environmental: Liquid Crystal Polymer insulation, UL94 V-0 flammability rating, operating range -55°C to 105°C
• Electrical Performance: 0.75A current rating
• Compliance: RoHS compliant status

Only components matching all these parameters across connector type, position count, pitch, mounting method, shrouding style, contact finish, insulation material, temperature range, and regulatory compliance qualify as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The 81068-660C04-RB is classified as obsolete. The manufacturer-recommended equivalent is the 81068-660C04-RB itself, indicating that this part number represents the current designation for this connector within the 3M 810 series.

For applications requiring this 68-position, 1.27mm pitch surface mount header, the specified part maintains full compliance with RoHS regulations and UL94 V-0 flammability requirements. The connector's operating temperature range of -55°C to 105°C and 0.75A current rating support standard industrial and commercial applications.

When sourcing this component, verify that the connector's board lock features and shrouded 4-wall design align with your PCB layout and mating interface requirements. The gold-plated mating contacts and tin-plated posts ensure reliable electrical performance across the specified temperature range.

Frequently Asked Questions (FAQ)

Q: What makes a part a valid substitute for the 81068-660C04-RB?

A: A substitute must match all critical parameters: 68 positions, 2-row configuration, 0.050" (1.27mm) mating pitch, 0.100" (2.54mm) row spacing, surface mount termination, shrouded 4-wall design, male pin contacts, gold mating finish, tin post finish, Liquid Crystal Polymer insulation, -55°C to 105°C operating range, 0.75A current rating, UL94 V-0 flammability rating, and RoHS compliance.

Q: Why is the product status listed as obsolete?

A: Obsolete status indicates that 3M has discontinued active production of this part number. However, the part remains available through authorized distributors with existing inventory. For new designs, consult 3M's current connector offerings within the 810 series or equivalent product lines.

Q: Can I use a connector with a different pitch or row count?

A: No. The 0.050" (1.27mm) pitch and 0.100" (2.54mm) row spacing are mechanical constraints that determine PCB footprint and mating interface compatibility. Substitutes must maintain identical pitch and row spacing specifications.

Q: What is the significance of the shrouded 4-wall design?

A: The 4-wall shrouding provides mechanical protection and alignment during mating operations. This design feature is integral to the connector's form factor and cannot be substituted with unshrouded or differently shrouded variants without affecting mechanical compatibility.

Q: Are there any compliance considerations for this connector?

A: Yes. The connector is RoHS compliant and carries a UL94 V-0 flammability rating. Any substitute must maintain these certifications to ensure regulatory compliance in your application.