Molex 0791077211 Equivalent & Substitute Parts

Part Overview

The Molex 0791077211 is a 24-position receptacle connector with 0.079" (2.00mm) pitch, designed for through-hole PCB mounting with solder termination. This connector features gold-plated mating contacts and is part of the Milli-Grid 79107 series. The part is currently active in production with 1114 units in stock.

Equivalent and substitute parts are identified when design requirements change, original part availability becomes limited, or alternative sourcing strategies are needed. The substitutes listed maintain electrical and mechanical compatibility within the specified parameter tolerances for this connector category.

Substiute Parts

0791077211

MolexIn Stock: 11310791077211 Datasheet

Current PartRFQ

M22-7141242

Harwin Inc.In Stock: 2247M22-7141242 Datasheet

MFR RecommendedRFQ

MMS-112-01-F-DV

Samtec Inc.In Stock: 1045MMS-112-01-F-DV Datasheet

MFR RecommendedRFQ

MMS-112-01-S-DV

Samtec Inc.In Stock: 1138MMS-112-01-S-DV Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0791077211 is determined by the following critical parameters:

• Connector Type & Contact Type: All substitutes must be receptacles with female socket contacts
• Position Count & Pitch: All substitutes must maintain 24 positions with 0.079" (2.00mm) mating pitch
• Row Configuration: All substitutes must have 2 rows with 0.079" (2.00mm) row spacing
• Mounting & Termination: All substitutes must support through-hole PCB mounting with solder termination
• Fastening Type: All substitutes must use push-pull fastening
• Contact Finish: All substitutes must have gold-plated mating contacts
• Compliance: All substitutes must be ROHS3 compliant

The three substitute parts listed (M22-7141242, MMS-112-01-F-DV, MMS-112-01-S-DV) meet these core substitution criteria. Variations in secondary parameters such as insulation height, contact length, current rating, and operating temperature range are documented in the comparison table below.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with ROHS3 compliance and are suitable for direct substitution in applications where the Molex 0791077211 is specified.

Harwin M22-7141242: This substitute offers higher current capacity (2A) and voltage rating (500VAC) compared to the original part. The operating temperature range is narrower (-40°C to 105°C versus -55°C to 125°C). Contact post length is longer (0.094" versus 0.075"), which may require PCB layout verification. Insulation material is liquid crystal polymer (LCP) rather than glass-filled thermoplastic.

Samtec MMS-112-01-F-DV and MMS-112-01-S-DV: Both Samtec variants maintain the full operating temperature range (-55°C to 125°C) of the original part and provide significantly higher current capacity (3.9A per contact). Contact post length is substantially longer (0.115" versus 0.075"), requiring PCB design verification. Insulation material is liquid crystal polymer (LCP). The primary difference between the two Samtec options is the contact finish thickness on mating contacts (3.00µin for -F-DV variant versus 30.0µin for -S-DV variant).

All substitutes are available in production quantities and maintain mechanical and electrical compatibility within the specified connector category.

Frequently Asked Questions (FAQ)

Q: Can the Harwin M22-7141242 be used as a direct drop-in replacement for the Molex 0791077211?

A: The Harwin M22-7141242 maintains all critical substitution parameters including 24 positions, 0.079" pitch, 2-row configuration, through-hole solder termination, and push-pull fastening. However, the contact post length differs (0.094" versus 0.075"), which may affect PCB hole depth and solder joint geometry. PCB layout verification is required before implementation.

Q: What is the difference between the two Samtec MMS variants (MMS-112-01-F-DV and MMS-112-01-S-DV)?

A: Both Samtec variants are electrically and mechanically equivalent with identical position count, pitch, row configuration, and current rating (3.9A per contact). The primary difference is the contact finish thickness on mating contacts: MMS-112-01-F-DV has 3.00µin gold plating, while MMS-112-01-S-DV has 30.0µin gold plating. Selection depends on application-specific contact wear and durability requirements.

Q: Are there operating temperature limitations when substituting the Molex part with the Harwin M22-7141242?

A: The Harwin M22-7141242 has a narrower operating temperature range (-40°C to 105°C) compared to the Molex 0791077211 (-55°C to 125°C). Applications requiring operation below -40°C or above 105°C must use the Molex original or the Samtec alternatives, which maintain the full -55°C to 125°C range.

Q: Do the substitute parts require PCB design changes?

A: Contact post length varies among substitutes. The Molex original has 0.075" post length, while Harwin M22-7141242 has 0.094" and both Samtec variants have 0.115". Longer post lengths may require PCB hole depth adjustment and solder volume recalculation. Mechanical fit verification is necessary before production implementation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all three substitute parts (M22-7141242, MMS-112-01-F-DV, MMS-112-01-S-DV) are ROHS3 compliant and meet the same environmental and regulatory requirements as the Molex 0791077211.