M52-5103845 Equivalent & Substitute Parts

Part Overview

The M52-5103845 is a 76-position receptacle connector from Harwin Inc.'s Archer M52 series, designed for board-to-board applications with 0.050" (1.27mm) pitch spacing. This connector features gold-plated forked contacts, through-hole solder termination, and push-pull fastening. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

M52-5103845

Harwin Inc.In Stock: 1119M52-5103845 Datasheet

Current PartRFQ

M52-5104045

Harwin Inc.In Stock: 988M52-5104045 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The M52-5104045 is identified as a manufacturer-recommended substitute for the M52-5103845. Substitution compatibility is determined by the following critical parameters:

• Series Compatibility: Both connectors belong to the Harwin Archer M52 series, ensuring mechanical and electrical interchangeability within the product family.
• Connector Type & Style: Both are receptacle connectors with board-to-board configuration and identical contact geometry (forked contacts).
• Pitch & Spacing: Identical mating pitch of 0.050" (1.27mm) and row spacing of 0.100" (2.54mm) ensure physical compatibility with mating plugs.
• Mounting & Termination: Both use through-hole solder termination and push-pull fastening, maintaining identical PCB integration requirements.
• Electrical Characteristics: Matching contact material (phosphor bronze), gold plating, and 1A current rating preserve electrical performance.
• Environmental Specifications: Identical operating temperature range (-40°C ~ 105°C), UL94 V-0 flammability rating, and MSL 1 rating ensure equivalent reliability in target applications.
• Compliance: Both are ROHS3 compliant and REACH unaffected, meeting regulatory requirements.

The primary difference is position count: M52-5104045 provides 80 positions versus 76 positions in the original part. This substitution is valid only when the application can accommodate the increased position count or when fewer positions are utilized.

Parameter Comparison

Engineering Selection Recommendations

The M52-5104045 is the manufacturer-recommended substitute for the obsolete M52-5103845. Selection of this substitute is supported by:

• Product Status: The M52-5104045 is active and in production, ensuring long-term availability and supply chain continuity compared to the obsolete M52-5103845.
• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.
• Certification Equivalence: Identical UL94 V-0 flammability rating and MSL 1 classification ensure equivalent performance in regulated applications including medical and telecommunications sectors.
• Electrical & Mechanical Compatibility: Matching electrical characteristics, contact geometry, pitch specifications, and mounting requirements ensure direct functional substitution within the Archer M52 series.

The 4-position increase (80 vs. 76) in the substitute part does not compromise compatibility when the application design accommodates or does not require all available positions.

Frequently Asked Questions (FAQ)

Q: Can M52-5104045 directly replace M52-5103845 in existing designs?

A: Yes, the M52-5104045 is mechanically and electrically compatible with M52-5103845. Both connectors share identical pitch (0.050"), row spacing (0.100"), contact geometry, termination method, and electrical ratings. The substitute accommodates 80 positions versus 76 in the original part.

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

A: The M52-5104045 provides 80 contact positions compared to 76 positions in the M52-5103845. All other mechanical, electrical, and environmental specifications are identical.

Q: Are there packaging differences between the main part and substitute?

A: The M52-5103845 packaging is not specified in available data. The M52-5104045 is supplied in tube packaging. Confirm packaging requirements with your procurement specifications.

Q: Why is the M52-5103845 obsolete?

A: The M52-5103845 has reached end-of-life status. The M52-5104045 is the active production equivalent within the Archer M52 series.

Q: Do both connectors meet the same compliance standards?

A: Yes. Both M52-5103845 and M52-5104045 are ROHS3 compliant, REACH unaffected, and rated UL94 V-0 for flammability. Both maintain MSL 1 (unlimited) moisture sensitivity level.

Q: What applications are these connectors suitable for?

A: Both connectors are specified for general purpose, medical, and telecommunications applications, with operating temperature range of -40°C to 105°C and 1A current rating per contact.