M50-3123045 Equivalent & Substitute Parts

Part Overview

The M50-3123045 is a 60-position receptacle connector from Harwin Inc.'s Archer M50 series, designed for surface mount applications with 0.050" (1.27mm) pitch spacing. This connector features gold-plated female socket contacts, push-pull fastening, and is rated for -40°C to 105°C operation. The part is currently obsolete, making identification of compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

M50-3123045

Harwin Inc.In Stock: 1076M50-3123045 Datasheet

Current PartRFQ

M50-3125045

Harwin Inc.In Stock: 16871M50-3125045 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the M50-3123045 is based on the following critical parameters that must remain consistent:

• Manufacturer series (Archer M50)
• Connector type (Receptacle)
• Contact type (Female Socket)
• Pitch spacing (0.050" / 1.27mm)
• Row configuration (2 rows)
• Mounting method (Surface Mount)
• Fastening mechanism (Push-Pull)
• Contact finish (Gold)
• Operating temperature range (-40°C ~ 105°C)
• Current rating (1A)

The M50-3125045 qualifies as a substitute based on these parameters. The primary difference is the number of positions (100 vs. 60), which represents an expansion of the same connector family rather than a fundamental change in electrical or mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The M50-3125045 is the designated manufacturer substitute for the obsolete M50-3123045. Both parts maintain identical electrical and mechanical specifications across all critical parameters, including pitch, row spacing, contact finish, operating temperature, and current rating.

The M50-3125045 offers the advantage of active product status with current manufacturing support and higher inventory availability (16,812 units vs. 1,032 units). Both parts carry equivalent compliance certifications: ROHS3 compliance, UL94 V-0 flammability rating, and REACH unaffected status.

The primary design consideration is the increased position count (100 vs. 60). Applications requiring exactly 60 positions must account for the additional 40 positions in the M50-3125045, which may require circuit board layout modifications or selective population strategies.

Frequently Asked Questions (FAQ)

Q: Can the M50-3125045 directly replace the M50-3123045 in existing designs?

A: The M50-3125045 is electrically and mechanically compatible with the M50-3123045 across all critical parameters. However, the increased position count requires circuit board layout verification to ensure proper fit and clearance.

Q: What is the primary difference between these two connectors?

A: The M50-3123045 provides 60 positions while the M50-3125045 provides 100 positions. All other specifications—pitch, row spacing, contact type, fastening mechanism, and operating characteristics—remain identical.

Q: Are there compliance or certification differences between the parts?

A: No. Both parts carry identical compliance certifications: ROHS3 compliance, UL94 V-0 material flammability rating, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity level.

Q: What packaging is available for the substitute part?

A: The M50-3125045 is supplied in tube packaging.

Q: Does the operating temperature range differ between the parts?

A: No. Both parts operate across the identical temperature range of -40°C to 105°C.

Q: Are the contact materials and finishes the same?

A: Yes. Both connectors use phosphor bronze contacts with gold plating (flash thickness) on both mating and post surfaces.