3M 81036-650C01 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 81036-650C01 is a surface mount rectangular connector header designed for board-to-cable/wire applications. This 36-position connector operates at 0.050" (1.27mm) pitch with dual-row configuration and shrouded design. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

81036-650C01

3MIn Stock: 118081036-650C01 Datasheet

Current PartRFQ

81036-650C01-RB

3MIn Stock: 180681036-650C01-RB Datasheet

DirectRFQ

81036-650C01-RB

3MIn Stock: 180681036-650C01-RB Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 81036-650C01 is determined by strict alignment of the following critical parameters:

• Connector type (Header)
• Contact type (Male Pin)
• Number of positions (36)
• Number of rows (2)
• Pitch - mating (0.050" / 1.27mm)
• Row spacing - mating (0.100" / 2.54mm)
• Mounting type (Surface Mount)
• Shrouding configuration (Shrouded - 4 Wall)
• Termination method (Solder)
• Contact material (Copper Alloy)
• Insulation material (Liquid Crystal Polymer)
• Operating temperature range (-55°C ~ 105°C)
• Current rating (0.75A)
• Material flammability rating (UL94 V-0)
• Moisture sensitivity level (1 - Unlimited)

The 81036-650C01-RB variant meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The 81036-650C01-RB serves as a direct functional equivalent to the 81036-650C01. Both parts share identical electrical and mechanical specifications across all critical connector parameters. The primary distinctions are:

Packaging: The substitute is supplied in tray packaging versus bulk, affecting inventory management and handling procedures.

RoHS Compliance: The 81036-650C01-RB achieves RoHS compliance, while the original part does not. This distinction is significant for applications subject to RoHS regulatory requirements or customer specifications mandating RoHS-compliant components.

Post Contact Finish: The substitute features pure tin post finish with increased thickness (250.0µin vs. 125.0µin), compared to the tin-lead finish of the original. This change aligns with lead-free manufacturing standards and provides enhanced corrosion resistance in the solder joint interface.

For applications where RoHS compliance is required or preferred, the 81036-650C01-RB is the appropriate selection. For legacy systems with no RoHS mandate, both parts deliver equivalent functional performance.

Frequently Asked Questions (FAQ)

Q: Are the 81036-650C01 and 81036-650C01-RB mechanically interchangeable?

A: Yes. Both connectors share identical mechanical dimensions, pitch spacing, row configuration, shrouding design, and mounting footprint. They are direct mechanical substitutes.

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

A: The original 81036-650C01 uses tin-lead finish at 125.0µin thickness. The 81036-650C01-RB uses pure tin finish at 250.0µin thickness. The increased thickness in the substitute provides enhanced durability and corrosion resistance in solder joint applications.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance reflects manufacturing process and material composition standards, not electrical or thermal performance. Both parts operate identically within the specified -55°C to 105°C temperature range and 0.75A current rating.

Q: Can I use the 81036-650C01-RB as a drop-in replacement for the 81036-650C01?

A: Yes, provided your application or customer specifications do not explicitly prohibit RoHS-compliant components or require the original tin-lead finish specification. The tray packaging of the substitute may require adjustment to receiving and storage procedures.

Q: Why is the 81036-650C01-RB available in higher inventory than the original part?

A: The substitute reflects current manufacturing standards and RoHS compliance requirements. Manufacturers maintain higher stock of compliant variants to support modern procurement specifications.