Molex 0879142004 Equivalent & Substitute Parts

Part Overview

The Molex 0879142004 is a rectangular connector header designed for through-hole mounting applications. This vertical 20-position connector operates at a 0.100" (2.54mm) pitch and features a 2-row configuration with unshrouded design. The part is classified as Active status and is widely used in automotive, general purpose, lighting, medical, and telecommunications applications. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in board-level designs.

Substiute Parts

0879142004

MolexIn Stock: 8080879142004 Datasheet

Current PartRFQ

MTLW-110-05-F-D-175

Samtec Inc.In Stock: 1294MTLW-110-05-F-D-175 Datasheet

MFR RecommendedRFQ

MTLW-110-05-G-D-170

Samtec Inc.In Stock: 1110MTLW-110-05-G-D-170 Datasheet

MFR RecommendedRFQ

MTLW-110-07-G-D-170

Samtec Inc.In Stock: 1702MTLW-110-07-G-D-170 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 0879142004 are qualified based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

• Pitch - Mating: 0.100" (2.54mm)
• Number of Positions: 20
• Number of Rows: 2
• Row Spacing - Mating: 0.100" (2.54mm)
• Contact Type: Male Pin
• Mounting Type: Through Hole
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Shape: Square
• Insulation Material: Liquid Crystal Polymer (LCP)
• Material Flammability Rating: UL94 V-0

All three substitute parts from Samtec Inc. (MTLW series) meet these core electrical and mechanical parameters. Variations in contact length, insulation height, and contact finish thickness are secondary parameters that do not prevent substitution when the primary criteria align.

Parameter Comparison

Engineering Selection Recommendations

All three Samtec MTLW series connectors are qualified substitutes for the Molex 0879142004 based on matching primary electrical and mechanical parameters. Selection among the three substitute options depends on specific application requirements:

MTLW-110-05-F-D-175: This variant features a contact length of 0.175" (4.45mm) for mating and 0.100" (2.54mm) for post termination. The post contact finish is tin, matching the original Molex specification. This option is suitable for applications requiring shorter overall contact engagement.

MTLW-110-05-G-D-170: This variant provides a contact length of 0.170" (4.32mm) for mating and 0.105" (2.67mm) for post termination. Both mating and post contacts feature gold finish. This configuration offers enhanced corrosion resistance compared to tin-finished posts.

MTLW-110-07-G-D-170: This variant extends the post contact length to 0.200" (5.08mm) while maintaining a 0.170" (4.32mm) mating contact length. Both mating and post contacts are gold-finished. This option accommodates applications requiring deeper board penetration or thicker PCB assemblies.

All substitute parts maintain Active product status, ROHS3 compliance, and UL94 V-0 flammability rating. Operating temperature range (-55°C ~ 125°C) and current rating (5.2A per Contact) are specified for the Samtec parts and support the intended applications.

Frequently Asked Questions (FAQ)

Q: Can the Samtec MTLW series connectors directly replace the Molex 0879142004 in existing designs?

A: Yes, all three Samtec MTLW variants are direct substitutes when the primary parameters match: 0.100" (2.54mm) pitch, 20 positions, 2 rows, through-hole mounting, solder termination, and push-pull fastening. The connectors are mechanically and electrically compatible for board-level applications.

Q: What is the difference between the three Samtec substitute options?

A: The primary differences are contact length specifications and contact finish materials. MTLW-110-05-F-D-175 uses tin-finished posts with shorter overall contact length. MTLW-110-05-G-D-170 and MTLW-110-07-G-D-170 both feature gold-finished posts, with the latter providing extended post length for deeper PCB penetration.

Q: Does the contact finish difference affect substitution compatibility?

A: Contact finish variations (tin versus gold) do not prevent substitution. Both finishes are compatible with standard solder termination processes. Gold-finished contacts provide enhanced corrosion resistance in high-reliability applications, while tin-finished contacts are suitable for general-purpose use.

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

A: Yes. The Molex 0879142004 is supplied in Tray packaging, while all three Samtec MTLW variants are supplied in Bulk packaging. This affects handling and storage procedures but does not impact electrical or mechanical compatibility.

Q: What is the significance of the insulation material difference?

A: The Molex part specifies Liquid Crystal Polymer (LCP) with glass filling, while Samtec parts specify LCP without glass filling notation. Both materials meet UL94 V-0 flammability requirements and are suitable for the specified applications. The glass-filled variant in the original part may provide marginally enhanced mechanical properties, but this does not prevent substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes, all three Samtec MTLW variants are ROHS3 compliant, matching the compliance status of the original Molex 0879142004. All parts are also REACH unaffected and classified under ECCN EAR99.