Molex 0791077054 Equivalent & Substitute Parts

Part Overview

The Molex 0791077054 is a 10-position receptacle connector from the Milli-Grid 79107 series, designed for board-to-board or cable applications. This through-hole mounted connector features a 0.079" (2.00mm) pitch with gold-plated mating contacts and tin-plated posts. The component is actively produced and widely used in automotive, general purpose, and telecommunications applications. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, inventory management, or supply chain optimization.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	10
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature Range	-55°C ~ 125°C
Current Rating	1A
Voltage Rating	125V
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

The Harwin Inc. M22-7140542 is identified as a manufacturer-recommended substitute for the Molex 0791077054 based on the following critical parameters:

Matching Parameters:

Connector type: Receptacle with female socket contacts
Position count: 10 positions
Mating pitch: 0.079" (2.00mm)
Row configuration: 2 rows with 0.079" (2.00mm) row spacing
Mounting method: Through hole with solder termination
Fastening mechanism: Push-Pull
Mating contact finish: Gold
Contact material: Phosphor bronze
Post contact finish: Tin
Insulation color: Black
Style: Board to board or cable
RoHS compliance: ROHS3 Compliant
MSL rating: 1 (Unlimited)

Allowable Variations: The M22-7140542 exhibits differences in operating temperature range, current rating, and voltage rating. These variations remain within acceptable substitution parameters for applications where the substitute part's higher electrical ratings and narrower temperature range do not conflict with circuit requirements.

Parameter Comparison

Parameter	Molex 0791077054	Harwin M22-7140542
Manufacturer	Molex	Harwin Inc.
Series	Milli-Grid 79107	M22
Connector Type	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket
Number of Positions	10	10
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole
Termination	Solder	Solder
Fastening Type	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold
Contact Finish - Post	Tin	Tin
Insulation Color	Black	Black
Contact Material	Phosphor Bronze	Phosphor Bronze
Operating Temperature	-55°C ~ 125°C	-40°C ~ 105°C
Current Rating (Amps)	1A	2A
Voltage Rating	125V	500VAC
Insulation Material	Thermoplastic, Glass Filled	Liquid Crystal Polymer (LCP)
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the Molex 0791077054 and Harwin M22-7140542 maintain active product status and ROHS3 compliance, confirming ongoing manufacturer support and regulatory alignment. The M22-7140542 provides higher current capacity (2A versus 1A) and elevated voltage rating (500VAC versus 125V), making it suitable for applications requiring greater electrical headroom. The Molex part maintains a wider operating temperature range (-55°C to 125°C), which is critical for automotive and extreme-environment applications. The Harwin substitute employs liquid crystal polymer insulation versus glass-filled thermoplastic, offering enhanced material properties in specific industrial contexts. Selection between these parts depends on circuit voltage and current requirements, operating temperature constraints, and application-specific environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the Harwin M22-7140542 be used as a direct replacement for the Molex 0791077054 in all applications?

A: The M22-7140542 is electrically and mechanically compatible for applications operating within its specified temperature range (-40°C to 105°C) and electrical limits (2A, 500VAC). Applications requiring the full -55°C to 125°C temperature range of the Molex part require verification that the substitute meets thermal requirements.

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

A: Both connectors share identical mating pitch (0.079" / 2.00mm) and row spacing. The Molex part has an insulation height of 0.175" (4.45mm) with a contact post length of 0.118" (3.00mm), while the Harwin part measures 0.173" (4.40mm) in insulation height with a 0.094" (2.40mm) contact post length. These variations may affect PCB layout and mating depth considerations.

Q: Are both parts available in equivalent packaging quantities?

A: Both parts are supplied in tube packaging. Inventory levels differ, with the Molex part showing 892 pieces and the Harwin part showing 10,214 pieces in stock, which may influence procurement timelines and lead times.

Q: Do both connectors support the same mating stacking heights?

A: The Molex 0791077054 does not specify mated stacking heights. The Harwin M22-7140542 supports three stacking heights: 5.8mm, 6.55mm, and 6.8mm, providing design flexibility for applications requiring specific connector stack configurations.

Q: What insulation material differences exist between these parts?

A: The Molex part uses thermoplastic with glass filler, while the Harwin part employs liquid crystal polymer (LCP). LCP offers superior dimensional stability and chemical resistance in industrial environments, though both materials meet ROHS3 compliance requirements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message