3M 81100-560403-RB Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The 3M 81100-560403-RB is a right-angle rectangular connector header designed for through-hole mounting applications. This 100-position, 2-row header connector operates at 0.050" (1.27mm) pitch and is rated for 0.75A per contact. The connector features shrouded 4-wall construction with board lock functionality and gold-plated mating contacts on a copper alloy base with liquid crystal polymer insulation.

The product carries an obsolete status. Identifying equivalent and substitute parts is necessary to support legacy system maintenance, board redesigns, and supply chain continuity for applications currently utilizing this connector specification.

Substiute Parts

81100-560403-RB

3MIn Stock: 66281100-560403-RB Datasheet

Current PartRFQ

81100-560403-RB

3MIn Stock: 66281100-560403-RB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 81100-560403-RB is determined by strict equivalence across the following critical parameters:

• Connector Configuration: 100 positions, 2 rows, 0.050" (1.27mm) mating pitch, 0.100" (2.54mm) row spacing
• Mounting and Orientation: Through-hole, right-angle mounting with board lock feature
• Contact Specifications: Male pin contacts with gold mating finish and tin post finish
• Electrical Performance: 0.75A current rating per contact
• Environmental Compliance: UL94 V-0 flammability rating, RoHS compliance, MSL 1 rating
• Operating Conditions: -55°C to 105°C temperature range

Only parts meeting all these parameters qualify as direct substitutes. The 81100-560403-RB is the manufacturer-recommended equivalent for this specification.

Parameter Comparison

Engineering Selection Recommendations

The 81100-560403-RB maintains full compliance with RoHS directives and carries UL94 V-0 flammability certification, meeting regulatory requirements for industrial and commercial applications. The MSL 1 rating indicates unlimited shelf life without moisture sensitivity constraints.

For applications currently specified with the 81100-560403-RB, the manufacturer-recommended equivalent 81100-560403-RB provides identical electrical, mechanical, and environmental performance. Both parts are sourced from 3M's 810 series connector line and maintain the same contact geometry, pitch spacing, and termination specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute a different 3M connector series for the 81100-560403-RB?

A: Substitution is limited to parts meeting all specified parameters: 100 positions, 2 rows, 0.050" pitch, right-angle through-hole mounting, shrouded 4-wall construction, and 0.75A current rating. Connectors from different series or with different pitch spacing are not compatible.

Q: What is the significance of the 0.050" (1.27mm) pitch specification?

A: The 0.050" mating pitch and 0.100" row spacing are fixed mechanical dimensions that determine PCB footprint and mating connector compatibility. Any substitute must maintain these exact spacing parameters.

Q: Does the gold mating contact finish affect substitution criteria?

A: Yes. The gold finish on mating contacts is a specified parameter. Substitutes must maintain gold plating on mating surfaces to ensure equivalent electrical performance and contact reliability.

Q: Is the RoHS compliance status a substitution requirement?

A: RoHS compliance is a regulatory requirement for many applications. Substitute parts must maintain RoHS compliance status to meet current procurement and environmental standards.

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

A: MSL 1 indicates the connector has no moisture sensitivity limitations. Standard storage conditions without desiccant or controlled humidity are acceptable, simplifying inventory management and logistics.