Molex 0791077258 Equivalent & Substitute Parts

Part Overview

The Molex 0791077258 is an 18-position receptacle connector with 0.079" (2.00mm) pitch, designed for through-hole PCB mounting with gold-plated mating contacts. This connector is part of the Milli-Grid 79107 series and is actively manufactured. Equivalent and substitute parts are identified based on matching electrical and mechanical specifications to ensure functional compatibility in board-to-board and cable applications.

Substiute Parts

0791077258

MolexIn Stock: 10810791077258 Datasheet

Current PartRFQ

63453-118LF

Amphenol ICC (FCI)In Stock: 359563453-118LF Datasheet

MFR RecommendedRFQ

MMS-109-01-F-DV

Samtec Inc.In Stock: 895MMS-109-01-F-DV Datasheet

MFR RecommendedRFQ

MMS-109-01-S-DV

Samtec Inc.In Stock: 987MMS-109-01-S-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 0791077258 are qualified based on the following critical parameters:

• 18-position receptacle configuration with female socket contacts
• 0.079" (2.00mm) mating pitch and row spacing
• Through-hole solder termination with push-pull fastening
• Gold-plated mating contacts
• Operating temperature range of -55°C to 125°C
• Two-row connector layout

The three substitute parts listed below meet these core mechanical and electrical requirements. Variations in current rating, voltage rating, insulation material, and contact post length are within acceptable ranges for equivalent functionality in standard applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are actively manufactured and meet core mechanical and electrical compatibility requirements with the Molex 0791077258. Selection among these alternatives depends on application-specific requirements:

Amphenol ICC 63453-118LF is suitable for applications requiring higher current capacity (2A) and voltage rating (200V). This part carries UL94 V-0 flammability certification and uses glass-filled polycyclohexylenedimethylene terephthalate (PCT) insulation material. It is RoHS compliant and REACH affected.

Samtec MMS-109-01-F-DV and Samtec MMS-109-01-S-DV both support significantly higher current ratings (3.9A per contact) and use liquid crystal polymer (LCP) insulation material. These parts are ROHS3 compliant with not applicable moisture sensitivity levels. The primary difference between these two Samtec variants is the contact finish thickness on mating surfaces (MMS-109-01-F-DV: 3.00µin; MMS-109-01-S-DV: 30.0µin).

All substitute parts maintain the same operating temperature range (-55°C to 125°C) and push-pull fastening mechanism as the original Molex connector.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 63453-118LF be used as a direct replacement for the Molex 0791077258?

A: Yes, the Amphenol ICC 63453-118LF is mechanically and electrically compatible. Both connectors feature 18 positions, 0.079" (2.00mm) pitch, two-row configuration, through-hole solder termination, and push-pull fastening. The Amphenol part offers higher current (2A vs. 1A) and voltage (200V vs. 125V) ratings, making it suitable for applications with greater electrical demands.

Q: What is the difference between the two Samtec MMS variants?

A: Both Samtec MMS-109-01-F-DV and MMS-109-01-S-DV share identical mechanical specifications and current ratings (3.9A per contact). The primary difference is the gold plating thickness on mating contacts: MMS-109-01-F-DV has 3.00µin thickness, while MMS-109-01-S-DV has 30.0µin thickness, matching the Molex original specification.

Q: Are there any insulation material differences between these connectors?

A: Yes. The Molex 0791077258 uses thermoplastic glass-filled insulation, the Amphenol ICC 63453-118LF uses glass-filled polycyclohexylenedimethylene terephthalate (PCT), and both Samtec MMS variants use liquid crystal polymer (LCP). All three materials are suitable for the specified operating temperature range.

Q: Do all substitute parts meet RoHS compliance requirements?

A: Yes. The Molex 0791077258 and both Samtec parts are ROHS3 compliant. The Amphenol ICC 63453-118LF is RoHS compliant. All parts meet environmental compliance standards for electronic component manufacturing.

Q: What is the significance of contact post length differences?

A: Contact post length affects PCB hole engagement depth. The Molex original has 0.075" (1.91mm) post length, while the Amphenol part has 0.098" (2.50mm) and both Samtec parts have 0.115" (2.92mm). These variations are within acceptable ranges for standard through-hole PCB assembly processes and do not affect electrical performance.