Molex 0878314029 Equivalent & Substitute Parts

Part Overview

The Molex 0878314029 is an active rectangular connector header designed for through-hole mounting applications. This vertical 40-position connector operates at 2.00mm pitch and is classified as a shrouded 4-wall header with male pins. The part is manufactured in the Milli-Grid 87831 series and is actively produced. Equivalent and substitute parts are identified based on matching electrical and mechanical parameters to ensure functional compatibility in board-to-board or cable interconnect applications.

Substiute Parts

0878314029

MolexIn Stock: 7950878314029 Datasheet

Current PartRFQ

10075025-G01-40ULF

Amphenol ICC (FCI)In Stock: 166110075025-G01-40ULF Datasheet

MFR RecommendedRFQ

LTMM-120-02-F-D

Samtec Inc.In Stock: 1301LTMM-120-02-F-D Datasheet

MFR RecommendedRFQ

LTMM-120-02-G-D

Samtec Inc.In Stock: 808LTMM-120-02-G-D Datasheet

MFR RecommendedRFQ

LTMM-120-02-S-D

Samtec Inc.In Stock: 1023LTMM-120-02-S-D Datasheet

MFR RecommendedRFQ

TMMH-120-01-S-D-ES

Samtec Inc.In Stock: 1290TMMH-120-01-S-D-ES Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Pitch and Position Count: All substitute parts maintain 0.079" (2.00mm) mating pitch with 40 positions in 2 rows
• Connector Type and Contact Type: All parts are headers with male pins for through-hole mounting
• Shrouding Configuration: All parts feature shrouded 4-wall design
• Termination Method: All parts use solder termination
• Electrical Ratings: Current and voltage ratings must support the application requirements
• Operating Temperature Range: Substitute parts must operate within or exceed the specified temperature range
• Compliance Status: All parts maintain RoHS3 compliance and MSL 1 rating

The identified substitute parts are grouped by manufacturer and series while maintaining functional equivalence across these core parameters.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts maintain active product status and comply with RoHS3 requirements, ensuring regulatory compliance and supply chain continuity. The Amphenol ICC 10075025-G01-40ULF offers the highest inventory availability at 1560 units and provides a direct functional equivalent with identical pitch, position count, and shrouding configuration. The Samtec Flex Stack series (LTMM-120-02-F-D, LTMM-120-02-G-D, LTMM-120-02-S-D) provides extended operating temperature ranges up to 125°C, suitable for applications requiring enhanced thermal performance. The Samtec TMMH-120-01-S-D-ES offers a cuttable header option with unshrouded design, applicable to custom configuration requirements where individual position extraction is necessary.

Selection should prioritize parts matching the original operating temperature specification unless application requirements justify thermal performance upgrades. Shrouding configuration differences between the TMMH series and other options must be evaluated against mechanical clearance and EMI shielding requirements.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 10075025-G01-40ULF directly replace the Molex 0878314029?

A: Yes. Both parts share identical mating pitch (0.079"), position count (40), row configuration (2 rows), shrouding (4-wall), and termination method (solder). Electrical ratings are compatible for standard applications. Physical dimensions may vary slightly; PCB layout verification is necessary.

Q: What is the primary difference between the Samtec LTMM series and the original Molex part?

A: The Samtec LTMM series uses Liquid Crystal Polymer (LCP) insulation material versus the Molex polyamide (PA) nylon construction. Both materials are UL94 V-0 rated. The LTMM series offers push-pull fastening versus the Molex latch holder design. Operating temperature ranges extend to 125°C on select LTMM variants.

Q: Why is the Samtec TMMH-120-01-S-D-ES listed as unshrouded?

A: The TMMH series is designed as a cuttable header strip with end shrouds only, allowing individual position extraction. This configuration differs from the fully shrouded 4-wall design of other listed parts. Selection depends on whether custom position configurations are required.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance status, ensuring regulatory alignment with the original Molex 0878314029 for applications subject to RoHS directives.

Q: What packaging differences exist among the substitute parts?

A: The Molex original and most Samtec/Amphenol substitutes are supplied in tube packaging. The Samtec TMMH-120-01-S-D-ES is supplied in bulk packaging. Packaging selection may affect handling, storage, and automated assembly compatibility.

Q: Can substitute parts with higher operating temperature ratings be used in place of the original?

A: Yes. Parts rated for -55°C ~ 125°C (Samtec LTMM-120-02-G-D and TMMH-120-01-S-D-ES) are functionally compatible with applications specified for -55°C ~ 105°C. No derating or performance degradation occurs at lower temperature ranges.