M50-3202145 Equivalent & Substitute Parts

Part Overview

The Harwin M50-3202145 is a 42-position receptacle connector featuring 0.050" (1.27mm) pitch, through-hole right-angle mounting, and gold-plated contacts. Designed for board-to-board or cable applications, this connector operates across -40°C to 105°C and is rated for 1A current. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement.

Substiute Parts

M50-3202145

Harwin Inc.In Stock: 966M50-3202145 Datasheet

Current PartRFQ

853-83-042-20-001101

Preci-DipIn Stock: 777853-83-042-20-001101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Preci-Dip 853-83-042-20-001101 qualifies as a functional substitute based on the following critical parameters:

Matching Parameters:

• 42-position configuration with 2-row layout
• 0.050" (1.27mm) mating pitch and row spacing
• Through-hole, right-angle, solder-terminated mounting
• Push-pull fastening mechanism
• Gold-plated mating contacts
• 1A current rating
• UL94 V-0 flammability rating
• ROHS3 compliance
• MSL 1 (Unlimited) moisture sensitivity

Allowable Variations:

• Contact finish thickness on mating surface: 10.0µin (0.25µm) vs. 29.5µin (0.75µm) — both provide adequate gold plating for connector reliability
• Insulation height: 0.136" (3.46mm) vs. 0.128" (3.25mm) — within acceptable tolerance for board-to-board spacing
• Contact length - post: 0.094" (2.40mm) vs. 0.130" (3.30mm) — both accommodate standard PCB through-hole depths
• Operating temperature range: -40°C ~ 105°C vs. -55°C ~ 125°C — substitute provides extended range
• Contact material: Phosphor Bronze vs. Beryllium Copper — both materials meet electrical and mechanical requirements
• Post finish: Gold vs. Tin — both acceptable for solder termination

Parameter Comparison

Engineering Selection Recommendations

The Preci-Dip 853-83-042-20-001101 is a direct functional equivalent for the obsolete Harwin M50-3202145. Both connectors maintain identical electrical and mechanical specifications for the critical parameters governing substitution: 42-position configuration, 0.050" pitch, through-hole right-angle mounting, push-pull fastening, and 1A current rating.

The substitute part offers the advantage of active product status, ensuring ongoing availability and supply chain continuity. The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin compared to the original part. Both connectors carry identical compliance certifications: UL94 V-0 flammability rating, ROHS3 compliance, and MSL 1 moisture sensitivity.

Minor dimensional variations in contact finish thickness, insulation height, and post contact length fall within acceptable engineering tolerances and do not affect functional compatibility in board-to-board or cable applications.

Frequently Asked Questions (FAQ)

Q: Can the Preci-Dip 853-83-042-20-001101 directly replace the Harwin M50-3202145 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.050"), position count (42), row configuration (2 rows), mounting style (through-hole right-angle), and fastening mechanism (push-pull). The electrical and mechanical interface is fully compatible.

Q: What is the significance of the different contact finish thicknesses?

A: The Harwin part specifies 10.0µin (0.25µm) gold plating on mating contacts, while the Preci-Dip substitute provides 29.5µin (0.75µm). Both thicknesses exceed minimum requirements for gold-plated connector reliability and corrosion resistance. The thicker plating on the substitute offers enhanced durability.

Q: How do the insulation height differences affect board spacing?

A: The Harwin M50-3202145 has an insulation height of 0.136" (3.46mm), while the Preci-Dip 853-83-042-20-001101 measures 0.128" (3.25mm). This 0.008" (0.20mm) difference is negligible for standard board-to-board spacing applications and does not impact mechanical fit or electrical performance.

Q: Why does the substitute have a wider operating temperature range?

A: The Preci-Dip part operates from -55°C to 125°C, compared to the original -40°C to 105°C range. This extended specification reflects the design capabilities of the substitute connector and provides additional thermal margin for demanding applications without affecting compatibility in standard operating conditions.

Q: Are both connectors RoHS and REACH compliant?

A: Yes. Both the Harwin M50-3202145 and Preci-Dip 853-83-042-20-001101 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the difference between "Receptacle" and "Socket" connector terminology?

A: In this context, both terms describe female connectors designed to accept male pins or plugs. The terminology reflects different manufacturer conventions but indicates the same functional connector type for mating purposes.