M50-3901442 Equivalent & Substitute Parts

Part Overview

The M50-3901442 is a rectangular connector header manufactured by Harwin Inc. with 1.27mm pitch spacing designed for surface mount applications. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs. The obsolete status requires engineers to transition to active production equivalents that maintain electrical and mechanical compatibility.

Substiute Parts

M50-3901442

Harwin Inc.In Stock: 771M50-3901442 Datasheet

Current PartRFQ

M50-3901542

Harwin Inc.In Stock: 1267M50-3901542 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M50-3901442 is based on the following critical parameters that define functional equivalence within the Harwin connector portfolio:

• Pitch Specification: 1.27mm (0.050") mating pitch is the primary compatibility criterion
• Manufacturer Consistency: Harwin Inc. maintains electrical and mechanical standards across series variants
• Compliance Certifications: RoHS3 compliance and MSL Level 1 rating ensure regulatory and environmental compatibility
• Contact Configuration: Male pin headers with equivalent contact materials and finishes support direct signal path compatibility

The M50-3901542 qualifies as a substitute based on matching pitch specification and compliance requirements, though mounting configuration differs (through-hole right-angle versus surface mount).

Parameter Comparison

Engineering Selection Recommendations

The M50-3901542 is the manufacturer-designated substitute for the obsolete M50-3901442. Selection of this alternative is supported by:

• Active Production Status: M50-3901542 maintains current manufacturing and supply chain availability, eliminating procurement risk associated with obsolete components
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, ensuring continued regulatory alignment
• Electrical Equivalence: Matching pitch, contact material, contact finish, and operating temperature range preserve signal integrity and thermal performance
• Thermal Performance: Identical operating temperature range (-40°C ~ 105°C) ensures thermal compatibility in existing designs

Design transition requires evaluation of mounting configuration differences: M50-3901442 is surface mount (SMD), while M50-3901542 is through-hole right-angle. PCB layout modification may be necessary to accommodate the alternative mounting style.

Frequently Asked Questions (FAQ)

Q: Can M50-3901542 directly replace M50-3901442 without PCB modification?

A: Electrical compatibility is maintained through matching pitch and contact specifications. However, mounting configuration differs (surface mount versus through-hole right-angle), requiring PCB footprint redesign.

Q: Are there compliance concerns when transitioning from M50-3901442 to M50-3901542?

A: No. Both components maintain ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status. Regulatory requirements are preserved across the substitution.

Q: What is the primary reason for substituting M50-3901442?

A: M50-3901442 is classified as obsolete. M50-3901542 is the active production equivalent from Harwin Inc., ensuring long-term supply availability and manufacturing support.

Q: Are the contact specifications identical between these parts?

A: Yes. Both components use copper alloy contacts with gold mating finish and thermoplastic insulation, maintaining electrical performance and contact reliability.

Q: What packaging format is available for M50-3901542?

A: M50-3901542 is supplied in tray packaging format.