M50-3123245 Equivalent & Substitute Parts

Part Overview

The M50-3123245 is a 64-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 part is currently listed as obsolete, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

M50-3123245

Harwin Inc.In Stock: 826M50-3123245 Datasheet

Current PartRFQ

M50-3122045

Harwin Inc.In Stock: 936M50-3122045 Datasheet

MFR RecommendedRFQ

FLE-132-01-G-DV

Samtec Inc.In Stock: 917FLE-132-01-G-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M50-3123245 is determined by the following critical parameters:

Primary Matching Criteria:

• Connector type: Receptacle
• Contact type: Female socket
• Pitch - mating: 0.050" (1.27mm)
• Number of rows: 2
• Row spacing - mating: 0.050" (1.27mm)
• Mounting type: Surface mount
• Termination: Solder
• Fastening type: Push-pull
• Contact finish - mating: Gold
• Insulation material: Liquid Crystal Polymer (LCP)
• Contact shape: Square
• Contact material: Phosphor bronze

Secondary Compatibility Factors:

• Operating temperature range
• Current rating per contact
• Insulation height
• Mated stacking heights
• RoHS and REACH compliance status

Two substitute parts meet the primary matching criteria with variations in secondary parameters:

1. M50-3122045 (Harwin Inc.) - Same series, reduced position count (40 vs. 64)
2. FLE-132-01-G-DV (Samtec Inc.) - Different manufacturer, same position count (64), enhanced electrical specifications

Parameter Comparison

Engineering Selection Recommendations

M50-3122045 (Harwin Inc.)

This substitute is from the same manufacturer and series as the main part, ensuring mechanical and electrical compatibility within the Archer M50 platform. It maintains identical pitch, row spacing, mounting type, contact finish, and operating temperature specifications. The primary difference is the reduced position count (40 vs. 64), which limits its application to designs requiring 40 or fewer signal connections. This part is currently active in production and ROHS3 compliant, providing long-term availability and regulatory compliance.

FLE-132-01-G-DV (Samtec Inc.)

This substitute maintains the same 64-position count and 0.050" pitch as the main part, providing direct functional equivalence for connector density requirements. The FLE series offers enhanced electrical performance with a 2A per contact rating (versus 1A) and an extended operating temperature range (-55°C to 125°C versus -40°C to 105°C). The contact finish thickness is specified at 10.0µin (0.25µm) compared to flash plating on the main part. Insulation height is 0.172" (4.37mm) versus 0.142" (3.60mm), requiring PCB layout verification. This part is active in production and ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can M50-3122045 be used as a direct replacement for M50-3123245?

A: M50-3122045 is mechanically and electrically compatible for applications requiring 40 or fewer positions. If your design uses all 64 positions of the M50-3123245, this substitute is not suitable without circuit redesign.

Q: What are the key differences between FLE-132-01-G-DV and M50-3123245?

A: Both maintain 64 positions and 0.050" pitch. FLE-132-01-G-DV offers higher current rating (2A vs. 1A per contact), wider operating temperature range (-55°C to 125°C vs. -40°C to 105°C), and thicker gold plating (10.0µin vs. flash). Insulation height differs (0.172" vs. 0.142"), requiring PCB footprint verification.

Q: Are both substitutes ROHS3 compliant?

A: Yes. Both M50-3122045 and FLE-132-01-G-DV are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level).

Q: Which substitute should I select for new designs?

A: Selection depends on position count requirements. For 64-position applications, FLE-132-01-G-DV provides enhanced electrical performance and extended temperature range. For 40-position applications, M50-3122045 maintains the same manufacturer platform. Both are active products with established supply chains.

Q: Do the substitutes have different mated stacking heights?

A: M50-3123245 and M50-3122045 both specify mated stacking heights of 5.5mm and 6.18mm. FLE-132-01-G-DV does not specify mated stacking heights in available documentation.

Q: What is the impact of different insulation heights on PCB design?

A: M50-3123245 and M50-3122045 both have 0.142" (3.60mm) insulation height. FLE-132-01-G-DV has 0.172" (4.37mm) insulation height. This difference requires verification of PCB clearance and component placement during layout redesign if switching to the Samtec part.