M50-3904142 Equivalent & Substitute Parts

Part Overview

The M50-3904142 is a rectangular connector header manufactured by Harwin Inc., part of the Archer M50 series. This through-hole, right-angle connector features 82 positions at 1.27mm pitch with male pin contacts and gold-plated mating surfaces. The part is classified as obsolete, making identification of suitable substitutes necessary for ongoing design support and component sourcing.

Substiute Parts

M50-3904142

Harwin Inc.In Stock: 980M50-3904142 Datasheet

Current PartRFQ

M50-3902542

Harwin Inc.In Stock: 1515M50-3902542 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The M50-3902542 qualifies as a substitute based on the following shared electrical and mechanical parameters:

• Same manufacturer (Harwin Inc.) and series (Archer M50)
• Identical pitch specification: 0.050" (1.27mm)
• Identical number of rows: 2
• Identical mounting type: Through Hole, Right Angle
• Identical contact type: Male Pin
• Identical contact material and finishes: Copper Alloy with gold mating surface and tin post finish
• Identical operating temperature range: -40°C ~ 105°C
• Identical current rating: 1A per contact
• Identical termination method: Solder
• Identical fastening type: Push-Pull
• Identical insulation material: Thermoplastic (Black)
• Identical material flammability rating: UL94 V-0
• Identical RoHS and REACH compliance status

The primary difference is the number of positions: M50-3902542 provides 50 positions versus the 82 positions of M50-3904142. This substitution is applicable only when the circuit design can accommodate the reduced position count.

Parameter Comparison

Engineering Selection Recommendations

The M50-3902542 is an active product within the same Archer M50 series, providing continuity of supply for applications previously using the obsolete M50-3904142. Both parts maintain identical electrical performance characteristics, operating temperature ranges, and compliance certifications (ROHS3, REACH Unaffected, UL94 V-0).

Selection of M50-3902542 as a substitute is appropriate when circuit designs require 50 or fewer connection positions. The reduced position count and lower insulation height (0.039" versus 0.134") must be evaluated against specific board layout and mating requirements. Both parts share identical contact specifications, pitch, and termination methods, ensuring mechanical and electrical compatibility within the constraints of position availability.

Frequently Asked Questions (FAQ)

Q: Can M50-3902542 directly replace M50-3904142 in all applications?

A: Direct replacement is possible only when the circuit design requires 50 or fewer connection positions. The M50-3902542 provides 50 positions compared to the 82 positions of M50-3904142. All other electrical and mechanical parameters are identical.

Q: What is the primary difference between these two connectors?

A: The primary difference is the number of positions: M50-3904142 has 82 positions while M50-3902542 has 50 positions. Additionally, the insulation height differs: 0.134" (3.40mm) for M50-3904142 versus 0.039" (1.00mm) for M50-3902542.

Q: Are the contact specifications identical between both parts?

A: Yes. Both parts feature identical contact length (mating: 0.150", post: 0.079"), contact material (Copper Alloy), contact finish (gold mating surface, tin post), and current rating (1A per contact).

Q: What is the pitch specification for both connectors?

A: Both connectors operate at 0.050" (1.27mm) pitch with 2 rows and identical row spacing of 0.050" (1.27mm).

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both M50-3904142 and M50-3902542 are ROHS3 Compliant and REACH Unaffected.

Q: What is the operating temperature range for these connectors?

A: Both parts operate across an identical temperature range of -40°C to 105°C.

Q: Why is M50-3904142 listed as obsolete?

A: M50-3904142 is classified as obsolete by the manufacturer. M50-3902542, an active product in the same series, provides an alternative for ongoing component sourcing.