M50-3123145 Equivalent & Substitute Parts

Part Overview

The M50-3123145 is a 62-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 rated for 1A per contact with an operating temperature range of -40°C to 105°C. The product is currently obsolete, making identification of equivalent and substitute parts essential for ongoing system support and component sourcing.

Substiute Parts

M50-3123145

Harwin Inc.In Stock: 821M50-3123145 Datasheet

Current PartRFQ

M50-3122045

Harwin Inc.In Stock: 936M50-3122045 Datasheet

MFR RecommendedRFQ

FLE-131-01-G-DV

Samtec Inc.In Stock: 1042FLE-131-01-G-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M50-3123145 is determined by the following critical parameters:

• Number of Positions: 62 positions (exact match required for connector compatibility)
• Pitch - Mating: 0.050" (1.27mm) (determines mechanical and electrical interchangeability)
• Number of Rows: 2 rows (defines physical layout and mating interface)
• Connector Type: Receptacle with Female Socket contacts
• Mounting Type: Surface Mount (SMD)
• Termination: Solder
• Contact Finish: Gold plating on mating surfaces
• Insulation Material: Liquid Crystal Polymer (LCP)
• Contact Material: Phosphor Bronze

Two substitute parts are identified:

1. M50-3122045 (Harwin Inc.) - Same series, reduced position count (40 positions). Suitable only for applications where 40-position configuration is acceptable.

2. FLE-131-01-G-DV (Samtec Inc.) - Exact position and pitch match (62 positions, 0.050" pitch). Functionally equivalent with enhanced electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

FLE-131-01-G-DV (Samtec Inc.) is the primary substitute for direct replacement of the M50-3123145. This part maintains exact electrical and mechanical compatibility with identical position count (62), pitch (0.050"), row configuration (2), and contact geometry. The FLE-131-01-G-DV offers enhanced specifications including higher current rating (2A vs. 1A), extended operating temperature range (-55°C to 125°C vs. -40°C to 105°C), and thicker gold plating on mating contacts (10.0µin vs. Flash). Both parts are ROHS3 compliant and carry MSL 1 rating. The FLE-131-01-G-DV is currently in active production status, ensuring long-term availability.

M50-3122045 (Harwin Inc.) is a reduced-position alternative within the same Archer M50 series. This 40-position connector shares identical pitch, row spacing, mounting type, and termination method. Selection of this part requires confirmation that the application can operate with 40 positions instead of 62. This option maintains manufacturer continuity within the Harwin product line and is also in active production status.

Frequently Asked Questions (FAQ)

Q: Can FLE-131-01-G-DV directly replace M50-3123145 in existing designs?

A: Yes. The FLE-131-01-G-DV maintains identical mating pitch (0.050"), position count (62), row configuration (2), and contact geometry. Both are surface mount, solder-terminated receptacles with gold-plated phosphor bronze contacts. The FLE-131-01-G-DV provides enhanced electrical performance and temperature range.

Q: What is the primary difference between M50-3123145 and M50-3122045?

A: The M50-3122045 is a 40-position variant of the same Archer M50 series, compared to the 62-position M50-3123145. Both share identical pitch, row spacing, and mounting characteristics. Selection depends on whether the application requires all 62 positions or can function with 40 positions.

Q: Are there packaging differences between the substitute parts?

A: Yes. M50-3122045 is supplied in Tube packaging, while FLE-131-01-G-DV is supplied in Bulk packaging. M50-3123145 packaging information was not specified. Packaging selection may affect handling, storage, and assembly processes.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both FLE-131-01-G-DV and M50-3122045 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of M50-3123145.

Q: What is the impact of the higher current rating on FLE-131-01-G-DV?

A: The FLE-131-01-G-DV is rated for 2A per contact compared to 1A for M50-3123145. This higher rating provides additional design margin and allows for increased current capacity in applications requiring higher power delivery through the connector interface.

Q: How do the operating temperature ranges compare?

A: M50-3123145 operates from -40°C to 105°C. FLE-131-01-G-DV extends this range to -55°C to 125°C, providing broader environmental compatibility for extreme temperature applications. M50-3122045 maintains the -40°C to 105°C range.