M50-4303045 Equivalent & Substitute Parts

Part Overview

The M50-4303045 is a 60-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 is rated for -40°C to 105°C operation. The part is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

M50-4303045

Harwin Inc.In Stock: 1068M50-4303045 Datasheet

Current PartRFQ

M50-4301545

Harwin Inc.In Stock: 715M50-4301545 Datasheet

MFR RecommendedRFQ

87024-630LF

Amphenol ICC (FCI)In Stock: 271987024-630LF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M50-4303045 is determined by the following critical parameters:

Primary Matching Criteria:

• Connector type: Receptacle
• Number of positions: 60
• Pitch spacing: 0.050" (1.27mm)
• Number of rows: 2
• Row spacing: 0.050" (1.27mm)
• Mounting type: Surface Mount
• Fastening type: Push-Pull
• Contact finish: Gold
• Flammability rating: UL94 V-0

Secondary Compatibility Factors:

• Operating temperature range: -40°C ~ 105°C
• Current rating: 1A
• Insulation material and height
• Contact material and shape

The substitute parts listed below meet these core electrical and mechanical parameters, enabling direct functional replacement in board-to-board applications.

Parameter Comparison

Engineering Selection Recommendations

87024-630LF (Amphenol ICC - Rib-Cage™ Series)

This connector provides the closest functional match to the M50-4303045. Both are 60-position receptacles with identical pitch spacing (0.050"), row configuration, surface mount termination, and push-pull fastening. The 87024-630LF maintains UL94 V-0 flammability compliance and gold contact finish. The part is currently in active production with 2635 units in stock, ensuring long-term availability. The Rib-Cage™ series uses beryllium copper contacts and thermoplastic glass-filled insulation, which are standard alternatives to phosphor bronze and LCP materials in this connector class. This part is suitable for direct replacement in applications where the original M50-4303045 was specified.

M50-4301545 (Harwin Inc. - Archer M50 Series)

This connector maintains manufacturer continuity within the Harwin Archer M50 series and shares identical electrical and mechanical parameters with the M50-4303045, including pitch, row spacing, surface mount configuration, and push-pull fastening. However, the M50-4301545 is a 30-position connector, providing half the contact count. This part is appropriate only for applications where 30 positions satisfy the circuit requirements. The part is active and in stock (689 units), offering reliable supply. Use this substitute only when position count reduction is acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can the 87024-630LF directly replace the M50-4303045 in existing designs?

A: Yes. Both connectors share the same 60-position count, 0.050" pitch spacing, 2-row configuration, surface mount termination, and push-pull fastening. The 87024-630LF meets the same UL94 V-0 flammability requirement and gold contact finish specification. PCB footprints and mating interface dimensions are compatible. The primary difference is the insulation material (thermoplastic glass-filled versus LCP) and contact material (beryllium copper versus phosphor bronze), which are functionally equivalent for this connector class.

Q: Why is the M50-4301545 listed as a substitute if it has only 30 positions?

A: The M50-4301545 is listed because it shares all electrical and mechanical parameters with the M50-4303045 except position count. It is a valid substitute only for applications where 30 contact positions satisfy the circuit design. This connector is included for reference in cases where design flexibility allows position reduction or where partial connector utilization is acceptable.

Q: What are the key differences between the 87024-630LF and M50-4303045?

A: The primary differences are: (1) Manufacturer—Amphenol ICC versus Harwin; (2) Insulation material—thermoplastic glass-filled versus LCP; (3) Contact material—beryllium copper versus phosphor bronze; (4) Insulation height—0.187" versus 0.181"; (5) Contact finish post—tin versus gold. All other parameters, including position count, pitch, row spacing, mounting type, and fastening mechanism, are identical. These material differences do not affect functional compatibility in standard board-to-board applications.

Q: Is the 87024-630LF RoHS compliant?

A: Yes. The 87024-630LF is RoHS Compliant. The M50-4303045 is ROHS3 Compliant. Both meet RoHS requirements, though under different compliance standards. The 87024-630LF is REACH Affected, whereas the M50-4303045 is REACH Unaffected. Verify REACH compliance requirements for your specific application before selection.

Q: What is the current rating for the 87024-630LF?

A: The current rating for the 87024-630LF is not specified in the provided data. The M50-4303045 is rated for 1A per contact. When selecting the 87024-630LF, contact the manufacturer or distributor to confirm current rating specifications for your application requirements.

Q: Are there packaging differences between these connectors?

A: Yes. The M50-4303045 packaging is not specified. The M50-4301545 is supplied in Tube packaging. The 87024-630LF is supplied in Tube packaging. Verify packaging requirements for your procurement and assembly processes.