M50-4900945 Equivalent & Substitute Parts

Part Overview

The M50-4900945 is a surface mount rectangular connector header manufactured by Harwin Inc., part of the Archer M50 series. This 18-position, dual-row connector features 0.050" (1.27mm) pitch spacing, gold-plated copper alloy contacts, and is designed for board-to-board applications with push-pull fastening. The part is currently listed as obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement planning.

Substiute Parts

M50-4900945

Harwin Inc.In Stock: 866M50-4900945 Datasheet

Current PartRFQ

M50-4901045

Harwin Inc.In Stock: 956M50-4901045 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The M50-4901045 is identified as a manufacturer-recommended substitute for the M50-4900945. Substitution eligibility is determined by the following critical parameters that must remain consistent:

• Manufacturer: Harwin Inc. (same manufacturer ensures design compatibility)
• Series: Archer M50 (same connector family and interface standard)
• Pitch - Mating: 0.050" (1.27mm) (identical contact spacing)
• Row Spacing - Mating: 0.050" (1.27mm) (identical row separation)
• Mounting Type: Surface Mount (same PCB assembly process)
• Shrouding: Shrouded - 4 Wall (identical mechanical envelope and keying)
• Contact Type: Male Pin (same mating interface)
• Insulation Material: Liquid Crystal Polymer (LCP) (same material properties)
• Operating Temperature: -40°C ~ 105°C (identical thermal range)
• Current Rating: 1A per Contact (same electrical capacity)
• RoHS Status: ROHS3 Compliant (same environmental compliance)
• Moisture Sensitivity Level: 1 (Unlimited) (same handling requirements)

The primary difference is the number of positions: the substitute part M50-4901045 provides 20 positions versus the original 18 positions. This represents a functional expansion within the same connector family, allowing the substitute to accommodate additional signal or power connections while maintaining full backward compatibility in all other electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The M50-4901045 is the appropriate substitute for the obsolete M50-4900945 based on the following factors:

• The substitute part maintains active product status with Harwin Inc., ensuring continued availability and manufacturing support.
• All critical electrical parameters remain identical: pitch spacing, contact type, current rating, and operating temperature range.
• All mechanical parameters remain identical: mounting type, shrouding configuration, and insulation material.
• Both parts maintain identical compliance certifications: ROHS3 compliance and MSL 1 rating.
• The increase from 18 to 20 positions represents a functional expansion that does not compromise compatibility with existing mating connectors or PCB layouts designed for the original part.

Frequently Asked Questions (FAQ)

Q: Can the M50-4901045 be used as a direct replacement for the M50-4900945?

A: The M50-4901045 is electrically and mechanically compatible with the M50-4900945 in all critical parameters. The primary difference is the increased position count (20 versus 18). Existing mating connectors and PCB layouts designed for the 18-position part will interface correctly with the 20-position substitute, with two additional contact positions available for future use or signal expansion.

Q: What is the significance of the obsolete status of the M50-4900945?

A: Obsolete status indicates that Harwin Inc. has discontinued manufacturing of this part. The M50-4901045 is the manufacturer-recommended active alternative, ensuring continued access to compatible connector technology within the Archer M50 series.

Q: Are the pitch and row spacing identical between these parts?

A: Yes. Both parts maintain 0.050" (1.27mm) pitch spacing for mating contacts and 0.050" (1.27mm) row spacing. This ensures mechanical and electrical compatibility with all mating connectors designed for the Archer M50 series.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both the M50-4900945 and M50-4901045 are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Both operate across the identical temperature range of -40°C to 105°C.

Q: What is the packaging difference between these parts?

A: The M50-4900945 packaging information is not specified in the available data. The M50-4901045 is supplied in tube packaging. Confirm packaging requirements with your procurement specification.