3M 158220-0120 Equivalent & Substitute Parts

Part Overview

The 3M 158220-0120 is a 20-position rectangular socket connector with IDC (Insulation Displacement Contact) termination, designed for ribbon cable applications at 28 AWG wire gauge. This connector features gold-plated contacts and a 2.00mm pitch configuration with feed-through capability in a gray housing.

The 158220-0120 is classified as obsolete. Identifying qualified substitute parts is necessary to maintain design compatibility and ensure continued availability for applications requiring this connector specification.

Substiute Parts

158220-0120

3MIn Stock: 938158220-0120 Datasheet

Current PartRFQ

0875682043

MolexIn Stock: 41500875682043 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3M 158220-0120 is determined by the following critical parameters:

• Connector Configuration: 20 positions, 2 rows, 0.079" (2.00mm) pitch and row spacing
• Termination Method: IDC cable termination for ribbon cable
• Wire Specification: 28 AWG wire gauge compatibility
• Contact Material: Gold plating for electrical performance
• Mounting Style: Free hanging in-line configuration
• Functional Features: Feed-through contact design

The Molex 0875682043 satisfies all these parameters and is identified as a manufacturer-recommended substitute. Both connectors maintain identical electrical and mechanical interfaces for ribbon cable IDC applications.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0875682043 is the qualified substitute for the obsolete 3M 158220-0120. Selection is based on the following factors:

Product Status: The 3M 158220-0120 is obsolete, while the Molex 0875682043 maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance: Both connectors are RoHS compliant. The Molex part carries ROHS3 certification, meeting current regulatory requirements.

Electrical and Mechanical Compatibility: Both connectors share identical contact configuration, pitch, row spacing, wire gauge, and IDC termination method, ensuring direct functional equivalence in ribbon cable applications.

Additional Features: The Molex substitute includes a polarizing key feature, which provides enhanced connector orientation control without compromising compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0875682043 directly replace the 3M 158220-0120 in existing designs?

A: Yes. Both connectors maintain identical electrical and mechanical specifications for 20-position IDC ribbon cable termination at 28 AWG, including pitch, row spacing, and contact configuration.

Q: What is the difference between "Socket" and "Receptacle" terminology for these connectors?

A: Both terms describe female contact connectors in this product category. The terminology reflects different manufacturer naming conventions but indicates the same functional contact type.

Q: Does the polarizing key on the Molex part affect compatibility?

A: No. The polarizing key is an additional feature that enhances connector orientation control. It does not prevent mating with standard IDC ribbon cables or affect electrical performance.

Q: Are there packaging differences between these parts?

A: The 3M part is supplied without specified packaging, while the Molex part is supplied in trays. This affects handling and storage but does not impact electrical or mechanical function.

Q: What is the significance of contact finish thickness differences?

A: Both parts use gold plating for corrosion resistance and electrical conductivity. The thickness variation (30.0µin vs. 15.0µin) remains within acceptable ranges for IDC connector applications and does not affect functional compatibility.