Molex 0791077204 Equivalent & Substitute Parts

Part Overview

The Molex 0791077204 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 maintains full RoHS3 compliance with unlimited moisture sensitivity rating. Substitute parts are identified to address inventory availability, extended operating temperature ranges, or enhanced electrical ratings in specific application contexts.

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
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Insulation Color	Black
Contact Material	Phosphor Bronze
Current Rating	1A
Voltage Rating	125V
Operating Temperature	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0791077204 is determined by the following critical parameters:

Mandatory Matching Parameters:

Connector type: Receptacle
Contact type: Female Socket
Number of positions: 10
Pitch - mating: 0.079" (2.00mm)
Number of rows: 2
Row spacing - mating: 0.079" (2.00mm)
Mounting type: Through Hole
Termination: Solder
Fastening type: Push-Pull
Contact finish - mating: Gold
Contact finish - post: Tin
Insulation color: Black
Contact material: Phosphor Bronze

Allowable Parameter Variations: Substitute parts may differ in insulation height, contact length specifications, operating temperature range, current rating, voltage rating, insulation material composition, and material flammability rating, provided the mandatory parameters remain identical. These variations do not affect mechanical or electrical interchangeability in standard applications.

The Harwin Inc. M22-7140542 meets all mandatory matching criteria and qualifies as a direct substitute.

Parameter Comparison

Parameter	Molex 0791077204	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
Insulation Height	0.175" (4.45mm)	0.173" (4.40mm)
Contact Length - Post	0.075" (1.91mm)	0.094" (2.40mm)
Operating Temperature	-55°C ~ 125°C	-40°C ~ 105°C
Current Rating	1A	2A
Voltage Rating	125V	500VAC
Insulation Material	Thermoplastic, Glass Filled	Liquid Crystal Polymer (LCP)
Material Flammability Rating	Not specified	UL94 V-0
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Both the Molex 0791077204 and Harwin M22-7140542 are active products with full RoHS3 compliance and unlimited moisture sensitivity rating. Selection between these parts should be based on application-specific requirements:

The Molex 0791077204 is suitable for applications requiring the specified -55°C to 125°C operating temperature range and 1A current rating at 125V.

The Harwin M22-7140542 provides enhanced electrical performance with 2A current rating and 500VAC voltage rating, along with UL94 V-0 flammability certification. However, its operating temperature range is limited to -40°C to 105°C. The M22-7140542 features Liquid Crystal Polymer insulation material and slightly longer contact posts (0.094" versus 0.075"), which may affect PCB layout considerations.

Both connectors maintain identical mechanical interchangeability through matching pitch, row configuration, and mounting specifications. Component selection should account for thermal environment constraints and electrical load requirements specific to the end application.

Frequently Asked Questions (FAQ)

Q: Are the Molex 0791077204 and Harwin M22-7140542 mechanically interchangeable?

A: Yes. Both connectors share identical pitch (0.079"), row configuration (2 rows), number of positions (10), and mounting type (through hole). Mechanical interchangeability is confirmed.

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

A: The Harwin M22-7140542 provides higher current capacity (2A versus 1A) and voltage rating (500VAC versus 125V). The Molex 0791077204 supports a wider operating temperature range (-55°C to 125°C versus -40°C to 105°C).

Q: Does the difference in contact post length affect PCB design?

A: The Harwin M22-7140542 has longer contact posts (0.094" versus 0.075"). This difference may require PCB layout verification to ensure adequate solder joint formation and clearance to adjacent components.

Q: Are both parts RoHS compliant?

A: Yes. Both the Molex 0791077204 and Harwin M22-7140542 are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

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

A: The Molex 0791077204 supports operation up to 125°C, making it suitable for high-temperature environments. The Harwin M22-7140542 is rated to 105°C maximum.

Q: What is the difference in insulation material?

A: The Molex 0791077204 uses thermoplastic glass-filled insulation. The Harwin M22-7140542 uses Liquid Crystal Polymer (LCP) with UL94 V-0 flammability rating, providing enhanced flame resistance.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message