M50-4803045 Equivalent & Substitute Parts

Part Overview

The M50-4803045 is a rectangular connector header manufactured by Harwin Inc., designed for board-to-board applications with 60 positions at 0.050" (1.27mm) pitch. This through-hole, right-angle header features shrouded 4-wall construction with push-pull fastening and gold-plated copper alloy contacts. The product is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and procurement.

Substiute Parts

M50-4803045

Harwin Inc.In Stock: 970M50-4803045 Datasheet

Current PartRFQ

SBH31-NBPB-D30-RA-BK

Sullins Connector SolutionsIn Stock: 1188SBH31-NBPB-D30-RA-BK Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M50-4803045 is determined by strict equivalence across the following critical parameters:

• Connector configuration: Header type, male pin contact, 60 positions in 2 rows
• Pitch specifications: 0.050" (1.27mm) mating pitch and row spacing
• Mechanical interface: Through-hole, right-angle mounting with shrouded 4-wall construction
• Electrical performance: 1A per contact current rating and -40°C ~ 105°C operating temperature range
• Compliance: UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 rating

The SBH31-NBPB-D30-RA-BK from Sullins Connector Solutions meets all these criteria and is classified as an active product, providing a direct functional equivalent for the obsolete M50-4803045.

Parameter Comparison

Engineering Selection Recommendations

The SBH31-NBPB-D30-RA-BK is the qualified substitute for the M50-4803045. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The Sullins part carries active product status, ensuring ongoing availability and supply chain continuity. Both components meet ROHS3 compliance and UL94 V-0 flammability requirements, supporting equivalent regulatory and safety certifications. The transition from the obsolete Harwin part to the active Sullins equivalent presents no functional or compliance barriers for board-level integration.

Frequently Asked Questions (FAQ)

Q: Can the SBH31-NBPB-D30-RA-BK directly replace the M50-4803045 in existing designs?

A: Yes. Both parts share identical pitch (0.050"), position count (60), row configuration (2 rows), mounting style (through-hole right-angle), and shrouding (4-wall). Mating interface compatibility is assured.

Q: Are there differences in contact post length between these parts?

A: The M50-4803045 specifies 0.083" (2.11mm) contact post length, while the SBH31-NBPB-D30-RA-BK specifies 0.094" (2.40mm). This difference does not affect board-level compatibility for standard PCB thicknesses within the design envelope.

Q: What is the difference in insulation height?

A: The M50-4803045 has an insulation height of 0.222" (5.65mm), while the SBH31-NBPB-D30-RA-BK measures 0.211" (5.35mm). This 0.011" variance is within typical mechanical tolerance for board-to-board connector applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the M50-4803045 and SBH31-NBPB-D30-RA-BK are ROHS3 compliant, UL94 V-0 rated, and carry MSL 1 (Unlimited) moisture sensitivity levels. Regulatory and environmental compliance is equivalent.

Q: What is the packaging difference?

A: The M50-4803045 packaging is not specified in available data. The SBH31-NBPB-D30-RA-BK is supplied in Tray packaging. Confirm packaging requirements with your procurement specification.

Q: Are the contact materials compatible?

A: The M50-4803045 uses copper alloy contacts with gold plating. The SBH31-NBPB-D30-RA-BK uses brass contacts with gold plating. Both materials provide equivalent electrical performance and corrosion resistance for the specified 1A per contact current rating.