M50-4302445 Equivalent & Substitute Parts

Part Overview

The M50-4302445 is a 48-position receptacle connector from Harwin Inc.'s Archer M50 series, designed for board-to-board applications with 0.050" (1.27mm) pitch spacing. This surface mount connector features gold-plated contacts, push-pull fastening, and operates across -40°C to 105°C. The part is currently obsolete, making equivalent and substitute components necessary for ongoing system support and new designs requiring compatible interconnect solutions.

Substiute Parts

M50-4302445

Harwin Inc.In Stock: 1007M50-4302445 Datasheet

Current PartRFQ

M50-4302545

Harwin Inc.In Stock: 1063M50-4302545 Datasheet

MFR RecommendedRFQ

SFM-124-02-S-D-A

Samtec Inc.In Stock: 768SFM-124-02-S-D-A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M50-4302445 is determined by the following critical parameters:

Primary Matching Criteria:

• Connector type: Receptacle
• Contact type: Female socket
• Mounting type: Surface mount
• Pitch - mating: 0.050" (1.27mm)
• Number of rows: 2
• Row spacing - mating: 0.050" (1.27mm)
• Fastening type: Push-pull
• Termination: Solder
• Insulation material: Liquid crystal polymer (LCP)
• Contact shape: Square
• Material flammability rating: UL94 V-0
• RoHS status: ROHS3 compliant

Secondary Compatibility Parameters:

• Operating temperature range
• Current rating per contact
• Contact finish specifications
• Mated stacking heights

The substitute parts listed below maintain compatibility across all primary matching criteria. Variations in secondary parameters are noted where they provide enhanced performance or expanded operational capability.

Parameter Comparison

Engineering Selection Recommendations

M50-4302545 (Harwin Inc.)

This substitute maintains identical electrical and mechanical specifications to the M50-4302445 with two key differences: 50-position configuration versus 48-position, and active product status. The M50-4302545 is the direct Harwin equivalent within the Archer M50 series. Selection of this part is appropriate for applications where the additional two contact positions do not create design constraints. Active product status ensures ongoing availability and manufacturing support.

SFM-124-02-S-D-A (Samtec Inc.)

This substitute provides identical 48-position, 0.050" pitch configuration with enhanced electrical performance characteristics. The SFM-124-02-S-D-A operates across an extended temperature range (-55°C to 125°C versus -40°C to 105°C) and supports higher current ratings (3.2A per contact versus 1A). Contact finish on the post side differs (tin versus gold). This part is suitable for applications requiring higher current capacity or extended temperature operation. Active product status ensures supply continuity.

Both substitutes maintain compliance with ROHS3 and UL94 V-0 flammability requirements. Selection between M50-4302545 and SFM-124-02-S-D-A depends on position count requirements and electrical performance needs of the target application.

Frequently Asked Questions (FAQ)

Q: Can M50-4302545 directly replace M50-4302445 in existing designs?

A: M50-4302545 is mechanically and electrically compatible with M50-4302445 across all critical parameters including pitch, row spacing, mounting type, and fastening mechanism. The primary difference is the 50-position versus 48-position configuration. Direct replacement is possible if the additional two contact positions do not conflict with board layout or connector footprint constraints.

Q: What are the key differences between the Harwin and Samtec substitutes?

A: Both maintain 48-position, 0.050" pitch configuration. M50-4302545 (Harwin) provides identical electrical specifications. SFM-124-02-S-D-A (Samtec) offers extended operating temperature range (-55°C to 125°C) and higher current rating (3.2A per contact). Contact finish on the post side differs between manufacturers. Selection depends on application thermal and current requirements.

Q: Are all three connectors surface mount compatible?

A: Yes. M50-4302445, M50-4302545, and SFM-124-02-S-D-A are all surface mount receptacle connectors with solder termination and identical 0.050" pitch spacing, suitable for PCB assembly processes.

Q: What is the significance of the obsolete status for M50-4302445?

A: Obsolete status indicates the M50-4302445 is no longer manufactured by Harwin Inc. Both substitute parts (M50-4302545 and SFM-124-02-S-D-A) maintain active product status, ensuring continued availability, manufacturing support, and supply chain reliability for new designs and ongoing system support.

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

A: Yes. M50-4302445, M50-4302545, and SFM-124-02-S-D-A are all ROHS3 compliant and rated UL94 V-0 for material flammability. All three connectors have moisture sensitivity level (MSL) of 1 (unlimited).

Q: Can SFM-124-02-S-D-A be used in applications requiring 1A current rating?

A: Yes. SFM-124-02-S-D-A supports 3.2A per contact, which exceeds the 1A requirement of M50-4302445. This provides design margin for current-sensitive applications.