M50-3501842 Equivalent & Substitute Parts

Part Overview

The M50-3501842 is a rectangular connector header manufactured by Harwin Inc., part of the Archer M50 series. This is a through-hole vertical header with 36 positions at 0.050" (1.27mm) pitch, configured as a 2-row unshrouded connector with male pins and solder termination. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

M50-3501842

Harwin Inc.In Stock: 754M50-3501842 Datasheet

Current PartRFQ

FTS-118-01-L-D

Samtec Inc.In Stock: 1118FTS-118-01-L-D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The FTS-118-01-L-D from Samtec Inc. qualifies as a direct substitute based on the following critical parameters:

• Identical connector type (Header) and contact type (Male Pin)
• Matching pitch specifications: 0.050" (1.27mm) mating pitch and 0.050" (1.27mm) row spacing
• Identical position count (36) and row configuration (2 rows)
• Matching mounting type (Through Hole) and termination method (Solder)
• Identical fastening type (Push-Pull) and contact shape (Square)
• Unshrouded configuration matching the original design
• Both parts maintain UL94 V-0 flammability rating and ROHS3 compliance

The FTS-118-01-L-D is an active product with current manufacturing status, providing long-term availability compared to the obsolete M50-3501842.

Parameter Comparison

Engineering Selection Recommendations

The FTS-118-01-L-D is suitable for applications currently using the M50-3501842. Both parts maintain identical regulatory compliance (ROHS3 Compliant, REACH Unaffected, EAR99 classification). The Samtec part offers an extended operating temperature range (-55°C to 125°C versus -40°C to 105°C) and higher current rating per contact (3.4A versus 1A), providing enhanced performance margins in thermal and electrical stress conditions. The FTS-118-01-L-D is an active product with established supply chain availability, eliminating obsolescence risk associated with the discontinued M50-3501842.

Frequently Asked Questions (FAQ)

Q: Are the M50-3501842 and FTS-118-01-L-D mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.050"), position count (36), row configuration (2 rows), row spacing (0.050"), contact shape (square), and mounting type (through hole). Physical dimensions for mating and post contacts are within acceptable tolerance ranges for direct substitution.

Q: What is the difference in insulation material between these parts?

A: The M50-3501842 uses thermoplastic insulation, while the FTS-118-01-L-D uses Liquid Crystal Polymer (LCP). LCP provides superior thermal stability and dimensional consistency, supporting the extended operating temperature range of the Samtec part.

Q: Does the FTS-118-01-L-D cuttable feature affect compatibility?

A: The cuttable feature of the FTS-118-01-L-D is an additional capability that does not impact compatibility with applications designed for the M50-3501842. The connector functions identically when used as a complete 36-position assembly.

Q: Are there any electrical performance differences?

A: The FTS-118-01-L-D supports higher current per contact (3.4A versus 1A) and operates across a wider temperature range (-55°C to 125°C versus -40°C to 105°C). Both parts maintain identical contact finish specifications (gold mating, tin post) and equivalent electrical characteristics for standard applications.

Q: What is the packaging difference?

A: The M50-3501842 packaging specification is not provided. The FTS-118-01-L-D is supplied in bulk packaging. Confirm packaging requirements with your procurement specification.