Molex 0791077274 Equivalent & Substitute Parts

Part Overview

The Molex 0791077274 is a 50-position receptacle connector from the Milli-Grid 79107 series, designed for board-to-board and cable applications. This through-hole mounted connector features 0.079" (2.00mm) pitch mating contacts with gold plating and is rated for 1A at 125V operation across -55°C to 125°C. The part is Active status and ROHS3 compliant, making it suitable for automotive, general purpose, and telecommunications applications. Equivalent parts are identified when they maintain the same electrical and mechanical interface specifications while meeting current application requirements.

Substiute Parts

0791077274

MolexIn Stock: 12690791077274 Datasheet

Current PartRFQ

M22-7142542

Harwin Inc.In Stock: 958M22-7142542 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0791077274 is determined by the following critical parameters that must remain consistent:

• Connector type: Receptacle with female socket contacts
• Position count: 50 positions
• Pitch specification: 0.079" (2.00mm) mating pitch with 2-row configuration
• Mounting interface: Through-hole solder termination with push-pull fastening
• Contact finish: Gold-plated mating surface
• Electrical ratings: Minimum 1A current capacity and 125V voltage rating
• Compliance: ROHS3 and REACH requirements

The Harwin M22-7142542 meets these core substitution criteria while providing enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the Molex 0791077274 and Harwin M22-7142542 are Active status products with ROHS3 compliance and REACH unaffected status, qualifying them for equivalent use in applications requiring 50-position rectangular connectors with 0.079" pitch.

The Harwin M22-7142542 provides enhanced electrical performance with 2A current rating and 500VAC voltage rating, exceeding the base specifications of the Molex part. The operating temperature range of the Molex part (-55°C to 125°C) extends beyond the Harwin specification (-40°C to 105°C), which may be a limiting factor in extreme cold environments.

Selection between these parts should be based on specific application requirements regarding temperature extremes and electrical load conditions, with both parts meeting core mechanical and compliance requirements for direct substitution in standard board-to-board and cable connector applications.

Frequently Asked Questions (FAQ)

Q: Can the Harwin M22-7142542 directly replace the Molex 0791077274 in existing designs?

A: Yes, for applications operating within -40°C to 105°C and requiring up to 2A at 500VAC. Both connectors share identical pitch (0.079"), position count (50), row configuration (2), mounting type (through-hole), and fastening mechanism (push-pull). Physical and electrical interfaces are compatible.

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

A: The primary differences are electrical ratings and temperature range. The Harwin part provides higher current capacity (2A vs 1A) and voltage rating (500VAC vs 125V), while the Molex part supports a wider operating temperature range (-55°C to 125°C vs -40°C to 105°C). Insulation material also differs: Molex uses thermoplastic glass-filled material, while Harwin uses liquid crystal polymer (LCP).

Q: Are both parts compliant with industry standards?

A: Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use in regulated industries.

Q: What packaging formats are available?

A: The Molex 0791077274 is supplied in tube packaging, while the Harwin M22-7142542 is supplied in bulk packaging. Packaging format should be confirmed with procurement requirements.

Q: How do the contact finishes compare?

A: Both connectors feature gold-plated mating contacts for reliable signal transmission. The Molex part specifies 30.0µin (0.76µm) gold thickness on mating contacts, while the Harwin part does not specify mating contact finish thickness in available documentation.