Molex 0791077023 Equivalent & Substitute Parts

Part Overview

The Molex 0791077023 is a 48-position receptacle connector from the Milli-Grid 79107 series, designed for board-to-board or cable applications. This through-hole mounted connector features 0.079" (2.00mm) pitch spacing, gold-plated mating contacts, and tin-plated posts for solder termination. The connector operates across -55°C to 125°C and carries a 1A current rating at 125V. As an active product with ROHS3 compliance and MSL 1 rating, equivalent alternatives may be required for specific procurement, inventory, or application-specific requirements.

Substiute Parts

0791077023

MolexIn Stock: 8860791077023 Datasheet

Current PartRFQ

MMS-124-01-S-DV

Samtec Inc.In Stock: 893MMS-124-01-S-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0791077023 is determined by the following critical parameters:

• Connector Type & Contact Configuration: Must be a receptacle with female socket contacts
• Position Count & Pitch: Must maintain 48 positions at 0.079" (2.00mm) mating pitch with 2-row configuration
• Mounting & Termination: Must support through-hole mounting with solder termination
• Electrical Ratings: Must meet or exceed 1A current capacity and 125V voltage rating
• Environmental Compliance: Must maintain ROHS3 compliance and appropriate MSL rating
• Fastening & Mating Interface: Must feature push-pull fastening type compatible with standard mating connectors

The Samtec MMS-124-01-S-DV satisfies these core substitution criteria while offering enhanced current capacity (3.9A per contact) and alternative insulation material (Liquid Crystal Polymer).

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0791077023 and Samtec MMS-124-01-S-DV are active products with ROHS3 compliance and identical export classifications (EAR99, HTSUS 8536.69.4040). Selection between these parts is based on the following factors:

Molex 0791077023 is appropriate for applications requiring the original specified design with 1A current rating and standard thermoplastic glass-filled insulation material.

Samtec MMS-124-01-S-DV is appropriate for applications requiring higher current capacity (3.9A per contact) or where Liquid Crystal Polymer insulation material is preferred for enhanced thermal or mechanical performance. The Samtec part offers increased design margin for current-sensitive applications while maintaining identical pitch, position count, and mating interface geometry.

Both parts maintain identical operating temperature ranges (-55°C to 125°C) and fastening mechanisms, ensuring mechanical and thermal compatibility in board-to-board or cable interconnect applications.

Frequently Asked Questions (FAQ)

Q: Can the Samtec MMS-124-01-S-DV directly replace the Molex 0791077023 in existing designs?

A: Yes. Both connectors share identical mating pitch (0.079"), position count (48), row configuration (2 rows), mounting type (through-hole), and fastening mechanism (push-pull). The mating interface and PCB footprint are compatible. The Samtec part provides higher current capacity per contact (3.9A vs. 1A), making it suitable for applications with increased power requirements.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Insulation material—Molex uses thermoplastic glass-filled material while Samtec uses Liquid Crystal Polymer; (2) Current rating—Samtec supports 3.9A per contact versus Molex's 1A; (3) Contact finish thickness at mating surface—Molex specifies 15.0µin (0.38µm) while Samtec specifies 30.0µin (0.76µm); (4) Contact length post—Molex is 0.118" (3.00mm) versus Samtec's 0.115" (2.92mm).

Q: Are there packaging differences between these parts?

A: Yes. The Molex 0791077023 is supplied in tube packaging, while the Samtec MMS-124-01-S-DV is supplied in bulk packaging. This affects handling, storage, and procurement workflows but does not impact electrical or mechanical performance.

Q: Do both parts meet the same compliance standards?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes. Both carry identical HTSUS codes (8536.69.4040). The Molex part has MSL 1 (unlimited moisture sensitivity level), while the Samtec part is not applicable for MSL rating.

Q: Which part should be selected for high-current applications?

A: The Samtec MMS-124-01-S-DV is appropriate for applications requiring higher current capacity, as it supports 3.9A per contact compared to the Molex part's 1A rating. Both parts maintain identical voltage rating (125V for Molex; not specified for Samtec) and operating temperature range.