Equivalent & Substitute Parts for Molex 0791077269

Part Overview

The Molex 0791077269 is a 40-position receptacle connector with 0.079" (2.00mm) pitch, designed for through-hole PCB mounting with solder termination. This connector is part of the Milli-Grid 79107 series and is actively manufactured. Alternative equivalent parts may be required due to supply constraints, design revisions, or application-specific performance requirements such as higher current ratings or extended operating temperature ranges.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	40
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
Operating Temperature	-55°C ~ 125°C
Current Rating	1A
Voltage Rating	125V
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Equivalent parts for the Molex 0791077269 are qualified based on the following critical parameters:

Connector geometry: 40-position receptacle with 0.079" (2.00mm) pitch and 2-row configuration
Electrical compatibility: Female socket contacts with gold mating finish and solder termination
Mechanical interface: Through-hole mounting with push-pull fastening
Environmental compliance: RoHS compliance and MSL 1 rating

The substitute parts listed below maintain these core specifications while offering variations in current rating, voltage rating, operating temperature range, and insulation material composition. These variations allow for application-specific selection based on performance requirements.

Parameter Comparison

Parameter	Molex 0791077269	Amphenol ICC 63453-140LF	Harwin M22-7142042
Manufacturer	Molex	Amphenol ICC (FCI)	Harwin Inc.
Series	Milli-Grid 79107	Minitek® 2.00mm	M22
Number of Positions	40	40	40
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold
Insulation Color	Black	Black	Black
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C
Current Rating	1A	2A	2A
Voltage Rating	125V	200V	500VAC
Insulation Material	Thermoplastic, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Glass Filled	Liquid Crystal Polymer (LCP)
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Molex 0791077269 is suitable for applications requiring a 1A current rating at 125V with an operating temperature range of -55°C to 125°C. This part is ROHS3 compliant and actively manufactured.

Amphenol ICC 63453-140LF provides increased current capacity (2A) and voltage rating (200V) while maintaining the same pitch and row configuration. The Minitek® 2.00mm series uses PCT insulation material with UL94 V-0 flammability rating. This substitute is appropriate for applications requiring higher electrical performance within the same mechanical envelope.

Harwin M22-7142042 offers the highest voltage rating (500VAC) and 2A current capacity with LCP insulation material and UL94 V-0 flammability rating. The operating temperature range is -40°C to 105°C, which is narrower than the main part. This substitute is suitable for industrial and telecommunications applications requiring enhanced voltage performance. Mated stacking heights are specified at 5.8mm, 6.55mm, and 6.8mm.

All three parts maintain RoHS compliance, MSL 1 rating, and identical mechanical pitch specifications, ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 63453-140LF be used as a direct replacement for the Molex 0791077269?

A: Yes, from a mechanical and electrical interface perspective. Both connectors share identical pitch (0.079"), row configuration (2 rows), position count (40), and mounting method (through-hole solder). The Amphenol part offers higher current (2A vs 1A) and voltage (200V vs 125V) ratings, making it suitable for applications requiring greater electrical capacity.

Q: What are the key differences between the Harwin M22-7142042 and the Molex 0791077269?

A: The Harwin part provides 500VAC voltage rating and 2A current capacity compared to the Molex part's 125V and 1A. The operating temperature range differs: Harwin supports -40°C to 105°C versus Molex's -55°C to 125°C. Insulation material also differs: Harwin uses LCP while Molex uses thermoplastic glass-filled material. Mechanical pitch and row spacing remain identical.

Q: Are there any compatibility concerns when substituting these parts on existing PCBs?

A: No compatibility concerns exist regarding PCB layout, as all three connectors maintain the same 0.079" (2.00mm) pitch and 2-row spacing. Insulation height variations are minor (0.173" to 0.177") and do not affect board-level assembly. Contact length differences are internal to the connector and do not impact mating performance.

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

A: The Molex 0791077269 supports the widest operating temperature range (-55°C to 125°C). The Amphenol ICC 63453-140LF matches this range. The Harwin M22-7142042 operates from -40°C to 105°C, making it less suitable for applications requiring the full -55°C lower temperature limit.

Q: Do all three connectors have the same moisture sensitivity level?

A: Yes. All three parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

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