3M 81068-660C01-RB-WG Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 81068-660C01-RB-WG is a surface mount rectangular connector header designed for board-to-cable/wire applications. This 68-position connector operates at 0.050" (1.27mm) pitch with dual-row configuration and 0.100" (2.54mm) row spacing. The connector features shrouded 4-wall design with latch lock/eject hooks and gold-plated mating contacts. The product carries obsolete status, making identification of equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

81068-660C01-RB-WG

3MIn Stock: 90981068-660C01-RB-WG Datasheet

Current PartRFQ

81068-660C01-RB-WG

3MIn Stock: 90981068-660C01-RB-WG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 81068-660C01-RB-WG is determined by strict equivalence across the following critical parameters:

• Connector Type & Contact Configuration: Header with male pin contacts
• Position Count & Row Configuration: 68 positions in 2-row arrangement
• Pitch Specifications: 0.050" (1.27mm) mating pitch with 0.100" (2.54mm) row spacing
• Mounting Technology: Surface mount termination with solder attachment
• Mechanical Interface: Shrouded 4-wall design with latch lock/eject hooks, long fastening type
• Electrical Performance: 0.75A current rating at operating temperature range -55°C to 105°C
• Contact Specifications: Square contact shape, gold-plated mating surface (30.0µin thickness), tin-plated posts (250.0µin thickness)
• Material & Compliance: Liquid Crystal Polymer insulation, UL94 V-0 flammability rating, RoHS compliant

The provided substitute list contains only the original part number 81068-660C01-RB-WG, indicating no alternative equivalent parts are documented for this specific configuration.

Parameter Comparison

Engineering Selection Recommendations

The 81068-660C01-RB-WG is classified as obsolete. For applications requiring this connector, the documented substitute is the same part number, indicating direct equivalence. Both the main part and substitute maintain identical electrical and mechanical specifications, including the 0.75A current rating, -55°C to 105°C operating temperature range, and UL94 V-0 flammability compliance.

The connector's RoHS compliance and MSL 1 rating support use in modern manufacturing environments without moisture sensitivity constraints. The gold-plated mating contacts with 30.0µin thickness and tin-plated posts with 250.0µin thickness ensure reliable electrical performance and solder joint integrity.

For procurement of this obsolete connector, sourcing from existing inventory stocks is the primary strategy. Current inventory availability is documented at 833 pieces in new original condition.

Frequently Asked Questions (FAQ)

Q: What makes the 81068-660C01-RB-WG suitable for board-to-cable/wire applications?

A: The connector's header design with male pin contacts, surface mount termination, and latch lock/eject hooks provides secure mechanical attachment and reliable electrical connection for board-to-cable/wire interconnections. The 68-position, dual-row configuration at 0.050" pitch supports high-density signal routing.

Q: Are there mechanical compatibility considerations when using this connector?

A: Yes. The connector requires mating with a receptacle designed for 68-position, 0.050" (1.27mm) pitch, dual-row configuration with 0.100" (2.54mm) row spacing. The shrouded 4-wall design and latch lock/eject hooks are integral to the mechanical interface and must be matched in the mating connector.

Q: What is the significance of the contact finish specifications?

A: The gold-plated mating surface (30.0µin thickness) provides corrosion resistance and low contact resistance for signal integrity. The tin-plated posts (250.0µin thickness) ensure reliable solder joint formation during surface mount assembly. These finishes work together to maintain electrical performance across the connector's operating temperature range of -55°C to 105°C.

Q: How does the Liquid Crystal Polymer (LCP) insulation material affect connector performance?

A: LCP insulation provides excellent dimensional stability, low moisture absorption, and high mechanical strength. Combined with the UL94 V-0 flammability rating, LCP supports reliable operation in demanding environments while meeting safety and regulatory requirements.

Q: What does MSL 1 (Unlimited) mean for handling and storage?

A: MSL 1 classification indicates unlimited shelf life without moisture sensitivity constraints. The connector does not require special dry-pack storage or baking procedures prior to assembly, simplifying inventory management and procurement logistics.

Q: Is this connector suitable for new designs?

A: The 81068-660C01-RB-WG carries obsolete product status. For new designs, alternative current-production connectors with equivalent electrical and mechanical specifications should be evaluated. For legacy system support and repair, existing inventory sources remain the primary procurement option.