M50-3122245 Equivalent & Substitute Parts

Part Overview

The M50-3122245 is a 44-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 product is currently obsolete, making identification of equivalent and substitute parts essential for ongoing system support and component procurement.

Substiute Parts

M50-3122245

Harwin Inc.In Stock: 1050M50-3122245 Datasheet

Current PartRFQ

M50-3121145

Harwin Inc.In Stock: 1752M50-3121145 Datasheet

MFR RecommendedRFQ

FLE-122-01-G-DV

Samtec Inc.In Stock: 1055FLE-122-01-G-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the M50-3122245 is determined by strict alignment of electrical and mechanical parameters. The critical substitution criteria are:

Primary Matching Parameters:

• 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)
• Contact material (Phosphor Bronze)

Two substitute parts are identified:

M50-3121145 (Harwin Inc.) - Same series, same manufacturer, identical electrical and mechanical parameters except for position count (22 vs. 44). This represents a reduced-position variant within the same product family.

FLE-122-01-G-DV (Samtec Inc.) - Cross-manufacturer equivalent with identical position count (44), pitch, row configuration, and core electrical characteristics. Differences exist in contact finish thickness specifications and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

M50-3121145 Selection Criteria: This substitute is appropriate when the application requires only 22 positions instead of 44. As an active product from the same manufacturer and series, it maintains identical electrical and mechanical characteristics for the supported position count. Selection of this part requires circuit redesign to accommodate the reduced position count. Compliance certifications (ROHS3, MSL 1) are equivalent to the main part.

FLE-122-01-G-DV Selection Criteria: This substitute maintains the full 44-position configuration and is the direct cross-manufacturer equivalent. It is suitable for applications requiring the same connector footprint and pin count. The FLE-122-01-G-DV offers an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C) and higher current rating (2A per contact versus 1A), making it applicable to more demanding thermal and power environments. The increased insulation height (0.172" versus 0.142") must be verified for PCB clearance compatibility. Both parts maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can M50-3121145 be used as a direct replacement for M50-3122245? A: M50-3121145 is a reduced-position variant (22 positions vs. 44 positions) within the same Archer M50 series. Direct replacement is not possible without circuit redesign. Use this substitute only if your application can operate with half the connector positions.

Q: Is FLE-122-01-G-DV a pin-compatible replacement? A: FLE-122-01-G-DV maintains identical position count (44), pitch (0.050"), row configuration (2 rows), and mating spacing. Pin compatibility is established. However, the increased insulation height (0.172" vs. 0.142") requires verification of PCB clearance to ensure no mechanical interference with adjacent components.

Q: What are the key differences between M50-3122245 and FLE-122-01-G-DV? A: Both connectors share identical core specifications: 44 positions, 0.050" pitch, 2-row configuration, surface mount solder termination, and push-pull fastening. Differences include: manufacturer (Harwin vs. Samtec), contact finish thickness (Flash vs. 10.0µin), operating temperature range (M50: -40°C to 105°C; FLE: -55°C to 125°C), current rating (M50: 1A; FLE: 2A per contact), and insulation height (M50: 3.60mm; FLE: 4.37mm).

Q: Are both substitutes RoHS compliant? A: Both M50-3121145 and FLE-122-01-G-DV are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the main part M50-3122245.

Q: Which substitute should I select for a new design? A: For new designs requiring 44 positions, FLE-122-01-G-DV is the recommended choice as it is an active product with extended operating temperature range and higher current capacity. For applications limited to 22 positions, M50-3121145 provides an active alternative within the same manufacturer ecosystem.