3M 81040-600C01 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 81040-600C01 is a surface mount rectangular connector header with 40 positions arranged in 2 rows at 1.27mm pitch. This component functions as a board-to-cable/wire interface with shrouded 4-wall construction and push-pull fastening. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement planning.

Substiute Parts

81040-600C01

3MIn Stock: 83081040-600C01 Datasheet

Current PartRFQ

81040-600C01-RB

3MIn Stock: 103781040-600C01-RB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 81040-600C01 is determined by strict equivalence across the following critical parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Position count (40)
• Row configuration (2 rows)
• Mating pitch (1.27mm)
• Row spacing (2.54mm)
• Mounting method (Surface Mount)
• Shrouding design (Shrouded - 4 Wall)
• Fastening mechanism (Push-Pull)
• Insulation material (LCP)
• Operating temperature range (-55°C ~ 105°C)
• Current rating (0.75A)
• Flammability rating (UL94 V-0)

The identified substitute part 81040-600C01-RB maintains full equivalence across all these parameters, with documented differences limited to contact finish specifications and compliance status.

Parameter Comparison

Engineering Selection Recommendations

The 81040-600C01-RB serves as a direct functional equivalent to the 81040-600C01. Both parts are classified as obsolete and share identical electrical and mechanical specifications across all critical parameters.

The primary distinction between these parts is regulatory compliance: the 81040-600C01-RB is RoHS compliant, while the original 81040-600C01 is RoHS non-compliant. For applications subject to RoHS requirements or environmental regulations, the 81040-600C01-RB is the appropriate selection.

Contact finish on the post differs between the two parts: the original uses Tin-Lead plating at 125.0µin thickness, while the substitute uses Tin plating at 250.0µin thickness. Both finishes are compatible with standard solder assembly processes.

Frequently Asked Questions (FAQ)

Q: Are the 81040-600C01 and 81040-600C01-RB mechanically interchangeable?

A: Yes. Both parts maintain identical mechanical specifications including position count, pitch, row spacing, shrouding design, and mounting type. They are direct mechanical substitutes.

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

A: The original 81040-600C01 uses Tin-Lead plating on the post (125.0µin thickness). The 81040-600C01-RB uses Tin plating (250.0µin thickness). Both are compatible with standard solder assembly processes.

Q: Why is RoHS compliance relevant for this substitution?

A: The 81040-600C01-RB is RoHS compliant while the original is not. For applications or markets with RoHS requirements, the substitute part meets regulatory obligations.

Q: Do these parts have the same current rating?

A: Yes. Both parts are rated for 0.75A continuous current.

Q: Are the operating temperature ranges identical?

A: Yes. Both parts operate across the range of -55°C to 105°C.

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

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.