M50-3122345 Equivalent & Substitute Parts

Part Overview

The M50-3122345 is a 46-position receptacle connector manufactured by Harwin Inc. in the Archer M50 series. This surface mount connector features 0.050" (1.27mm) pitch, gold-plated contacts, and is designed for board-to-board or cable applications in general purpose, medical, and telecommunications environments. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible connectivity solutions.

Substiute Parts

M50-3122345

Harwin Inc.In Stock: 1000M50-3122345 Datasheet

Current PartRFQ

M50-3121245

Harwin Inc.In Stock: 1597M50-3121245 Datasheet

MFR RecommendedRFQ

FLE-123-01-G-DV

Samtec Inc.In Stock: 1131FLE-123-01-G-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the M50-3122345 is determined by the following critical parameters:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Pitch: 46 positions at 0.050" (1.27mm) mating pitch
• Row Configuration: 2 rows with 0.050" (1.27mm) row spacing
• Mounting & Termination: Surface mount with solder termination
• Contact Material & Finish: Gold-plated phosphor bronze contacts
• Insulation Material: Liquid Crystal Polymer (LCP)
• Environmental Compliance: ROHS3 compliant, MSL 1

Two substitute parts are identified based on these parameters:

1. M50-3121245 (Harwin Inc.) - Same series connector with reduced position count (24 positions) but identical pitch, row spacing, mounting type, and material specifications
2. FLE-123-01-G-DV (Samtec Inc.) - Full 46-position equivalent from different manufacturer with identical position count, pitch, and row configuration

Parameter Comparison

Engineering Selection Recommendations

For Full 46-Position Replacement:

FLE-123-01-G-DV (Samtec Inc.) is the direct functional equivalent. Both the original M50-3122345 and FLE-123-01-G-DV maintain identical position count, pitch, row configuration, and mounting specifications. FLE-123-01-G-DV is currently in active production status with higher current rating capability (2A per contact versus 1A) and extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C). Both parts are ROHS3 compliant with MSL 1 rating and REACH unaffected status.

For Reduced Position Count Applications:

M50-3121245 (Harwin Inc.) remains within the same Archer M50 series and shares identical pitch, row spacing, mounting type, and material specifications. This part is suitable only for applications requiring 24 positions or fewer. M50-3121245 is currently in active production status with equivalent environmental compliance and thermal ratings to the original part.

Frequently Asked Questions (FAQ)

Q: Can FLE-123-01-G-DV directly replace M50-3122345 in existing designs?

A: Yes. Both connectors maintain 46 positions, 0.050" (1.27mm) pitch, 2-row configuration, surface mount solder termination, and gold-plated phosphor bronze contacts. Mechanical and electrical compatibility is established through these shared parameters. FLE-123-01-G-DV offers enhanced specifications with higher current rating and extended temperature range.

Q: What is the primary limitation of M50-3121245 as a substitute?

A: M50-3121245 is a 24-position connector versus the 46-position requirement of M50-3122345. This part is suitable only for applications where connector position count can be reduced to 24 or fewer. All other electrical and mechanical parameters remain compatible within the Archer M50 series.

Q: Are there packaging differences between these parts?

A: Yes. M50-3122345 packaging is not specified. M50-3121245 is supplied in tube packaging. FLE-123-01-G-DV is supplied in bulk packaging. Packaging format may affect procurement, handling, and assembly processes but does not impact electrical or mechanical compatibility.

Q: Do all three parts meet the same compliance standards?

A: Yes. M50-3122345, M50-3121245, and FLE-123-01-G-DV are all ROHS3 compliant, MSL 1 rated, and REACH unaffected. All parts are suitable for general purpose, medical, and telecommunications applications.

Q: What is the difference in contact finish specifications?

A: M50-3122345 and M50-3121245 specify flash gold plating on mating contacts. FLE-123-01-G-DV specifies 10.0µin (0.25µm) gold plating on mating contacts. Both finishes provide gold contact surfaces; the specification difference reflects manufacturing process documentation rather than functional incompatibility.

Q: Can FLE-123-01-G-DV handle higher current than the original part?

A: Yes. FLE-123-01-G-DV is rated for 2A per contact, while M50-3122345 is rated for 1A. Applications requiring higher current per contact benefit from this increased capability. Applications designed for 1A operation remain fully compatible.