3M 81050-660C01-RB Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 81050-660C01-RB is a surface mount rectangular connector header from the 810 series, designed for board-to-cable/wire applications. This component features 50 positions arranged in 2 rows with 0.050" (1.27mm) pitch spacing and shrouded 4-wall construction. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement planning.

Substiute Parts

81050-660C01-RB

3MIn Stock: 83381050-660C01-RB Datasheet

Current PartRFQ

81050-660C01-RB

3MIn Stock: 91281050-660C01-RB Datasheet

MFR RecommendedRFQ

81050-660C01-RB-WG

3MIn Stock: 112181050-660C01-RB-WG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 81050-660C01-RB are identified based on strict electrical and mechanical parameter matching within the 3M 810 series connector family. The substitution criteria are:

• Connector type: Header
• Contact type: Male Pin
• Number of positions: 50
• Number of rows: 2
• Pitch - mating: 0.050" (1.27mm)
• Row spacing - mating: 0.100" (2.54mm)
• Mounting type: Surface Mount
• Shrouding: Shrouded - 4 Wall
• Contact finish - mating: Gold
• Contact material: Copper Alloy
• Insulation material: Liquid Crystal Polymer (LCP)
• Operating temperature: -55°C ~ 105°C
• Current rating: 0.75A
• Material flammability rating: UL94 V-0
• RoHS status: ROHS3 Compliant

The identified substitutes maintain these core parameters while differing in product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The 81050-660C01-RB-WG is the primary substitute for the obsolete 81050-660C01-RB. This part maintains identical electrical and mechanical specifications while offering active product status, ensuring continued availability and manufacturing support. The -WG variant is supplied in bulk packaging and represents the current production equivalent within the 810 series.

The second substitute, 81050-660C01-RB (without suffix), provides an alternative with identical specifications but remains classified as obsolete. This option is suitable only when active product status is not a procurement requirement.

Both substitutes are ROHS3 compliant and maintain the same operating temperature range, current rating, and flammability certification as the original part. Selection between substitutes should prioritize product status and packaging requirements for your application.

Frequently Asked Questions (FAQ)

Q: Are the substitute parts electrically compatible with the original 81050-660C01-RB?

A: Yes. Both substitute parts maintain identical electrical specifications including 0.75A current rating, 0.050" (1.27mm) pitch, 50-position configuration, and gold-plated copper alloy contacts. They are direct functional equivalents.

Q: What is the difference between 81050-660C01-RB and 81050-660C01-RB-WG?

A: The primary difference is product status. The 81050-660C01-RB-WG is active and supplied in bulk packaging, while the non-suffixed variant is obsolete. Both maintain identical electrical and mechanical parameters.

Q: Can I use the 81050-660C01-RB-WG as a drop-in replacement?

A: Yes, the 81050-660C01-RB-WG is a direct mechanical and electrical substitute. It features the same 50-position, 2-row configuration with 0.050" pitch, surface mount termination, and 4-wall shrouding.

Q: Are there any dimensional differences between these parts?

A: The insulation height differs between the main part (0.828" / 21.03mm) and the substitutes (0.405" / 10.29mm). This dimensional change must be evaluated against your PCB layout and mating connector specifications.

Q: Do all parts meet the same compliance standards?

A: Yes. All parts are ROHS3 compliant, UL94 V-0 rated, and operate across the -55°C to 105°C temperature range. Moisture sensitivity level is 1 (Unlimited) for all variants.

Q: Which substitute should I select for new designs?

A: The 81050-660C01-RB-WG is recommended for new designs due to its active product status, ensuring long-term availability and manufacturing continuity.