Molex 0552010278 Equivalent & Substitute Parts

Part Overview

The Molex 0552010278 is a 20-position rectangular connector plug with outer shroud contacts, designed for surface mount applications. This component features gold-plated contacts and is part of the SlimStack 55201 series. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

0552010278

MolexIn Stock: 11350552010278 Datasheet

Current PartRFQ

0538850208

MolexIn Stock: 422170538850208 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0552010278 is determined by strict equivalence across the following critical parameters:

• Connector Type & Configuration: Plug with outer shroud contacts
• Electrical Interface: 20 positions, 2-row arrangement
• Contact Pitch: 0.020" (0.50mm) spacing
• Mounting Technology: Surface mount (SMD)
• Contact Material & Finish: Gold plating at 10.0µin (0.25µm) thickness
• Environmental Compliance: ROHS3 and REACH compliance
• Moisture Sensitivity: MSL 1 rating

The Molex 0538850208 meets all these criteria and is classified as an active product, providing direct functional equivalence for the obsolete 0552010278.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0538850208 is the direct substitute for the obsolete 0552010278. Both components maintain identical electrical and mechanical specifications across all critical parameters: 20-position configuration, 0.50mm pitch, gold contact finish, and surface mount technology.

The 0538850208 is an active product with substantial inventory availability (42,155 units), ensuring supply chain continuity. Both parts carry equivalent compliance certifications (ROHS3, REACH Unaffected) and identical moisture sensitivity ratings (MSL 1).

Minor dimensional variations exist in mated stacking height (2.5mm vs. 2mm) and height above board (0.058" vs. 0.063"), which fall within typical connector design tolerances and do not affect functional compatibility in standard applications.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0538850208 directly replace the 0552010278 in existing designs?

A: Yes. Both components share identical electrical specifications (20 positions, 0.50mm pitch, gold contacts) and mounting technology (surface mount). The minor dimensional differences in stacking height and board height are within standard connector tolerances and do not compromise functional compatibility.

Q: What is the primary reason for substitution?

A: The 0552010278 is classified as obsolete. The 0538850208 is an active product from the same manufacturer, providing equivalent functionality with assured long-term availability.

Q: Are there packaging differences between these parts?

A: The 0552010278 packaging information is not specified in the technical data. The 0538850208 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount production.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 0552010278 and 0538850208 are ROHS3 compliant and REACH unaffected, with identical moisture sensitivity levels (MSL 1, unlimited shelf life).

Q: What are the dimensional differences, and do they matter?

A: The 0538850208 has a mated stacking height of 2.5mm (vs. 2mm) and a height above board of 0.058" (vs. 0.063"). These variations are typical in connector evolution and do not affect standard PCB layout or mating interface compatibility.