Molex 0791098669 Equivalent & Substitute Parts

Part Overview

The Molex 0791098669 is a 40-position receptacle connector in the Milli-Grid 79109 series, designed for surface mount applications with 0.079" (2.00mm) pitch. This connector features gold-plated mating contacts, push-pull fastening, and is rated for 1A at 125V. The part is active and in stock with 1009 units available. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical compatibility, and packaging requirements for board-to-board or cable interconnect applications.

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	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
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

Substitute parts for the Molex 0791098669 are qualified based on the following critical parameters:

Mandatory Matching Parameters:

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: Surface Mount
Termination: Solder
Fastening Type: Push-Pull
Contact Finish - Mating: Gold

Acceptable Variation Parameters:

Current Rating: Equal to or greater than 1A
Voltage Rating: Equal to or greater than 125V
Operating Temperature Range: Must encompass or exceed -55°C ~ 125°C
Insulation Height: Minor variations acceptable within mechanical envelope constraints
Contact Material: Phosphor Bronze or Copper Alloy acceptable
Insulation Material: Thermoplastic, Glass Filled, or Liquid Crystal Polymer acceptable

All substitute parts listed maintain compatibility with the Molex 0791098669 in board-to-board and cable interconnect applications while meeting or exceeding the electrical and thermal performance specifications.

Parameter Comparison

Parameter	Molex 0791098669	3M 150240-2000-RB	3M 150240-2020-RB	Amphenol ICC 55510-140LF	Amphenol ICC 55510-140TRLF	TE Connectivity 9-1734516-0	Samtec MMS-120-02-F-DV	Samtec MMS-120-02-S-DV	Samtec TLE-120-01-G-DV-K-TR
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle, Pass Through
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	40	40	40	40	40	40	40	40	40
Pitch - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Number of Rows	2	2	2	2	2	2	2	2	2
Row Spacing - Mating	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)	0.079" (2.00mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	3.00µin (0.076µm)	30.0µin (0.76µm)	10.0µin (0.25µm)
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black
Insulation Height	0.175" (4.45mm)	0.183" (4.65mm)	0.183" (4.65mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.175" (4.45mm)	0.177" (4.50mm)	0.177" (4.50mm)	0.177" (4.50mm)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating	1A	1A	1A	2A	2A	1A	3.9A per Contact	3.9A per Contact	3.2A per Contact
Voltage Rating	125V	500VDC	500VDC	200V	200V	250VAC	Not Specified	Not Specified	Not Specified
Contact Material	Phosphor Bronze	Copper Alloy	Copper Alloy	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Thermoplastic, Glass Filled	Thermoplastic	Thermoplastic	Plastic	Plastic	Thermoplastic	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

The 3M 150240-2000-RB and 150240-2020-RB are direct functional equivalents with identical electrical specifications and mechanical dimensions. Both are RoHS compliant and available in high quantities. The 150240-2020-RB includes board guide features matching the original design. Selection between these two depends on packaging requirements: Tray for 150240-2000-RB or Bulk for 150240-2020-RB.

The Amphenol ICC 55510-140TRLF and 55510-140LF provide equivalent performance with enhanced current rating (2A) and are available in Tape & Reel and Tube packaging respectively. Both are RoHS compliant and suitable for automated assembly processes.

Secondary Substitutes (Extended Performance):

The TE Connectivity 9-1734516-0 and Samtec MMS-120-02-S-DV offer higher current capacity (1A and 3.9A per contact respectively) with ROHS3 compliance. The Samtec TLE-120-01-G-DV-K-TR provides pass-through functionality with 3.2A per contact rating and is available in Tape & Reel packaging for pick-and-place assembly.

Temperature Consideration:

The 3M 150240 series and TE Connectivity 9-1734516-0 operate to 105°C maximum, which is below the original 125°C specification. These parts are suitable for applications with maximum operating temperature of 105°C or lower.

Packaging Selection:

Tape & Reel packaging (55510-140TRLF, TLE-120-01-G-DV-K-TR) is recommended for high-volume automated assembly. Tube packaging (55510-140LF, MMS-120-02-F-DV, MMS-120-02-S-DV) is suitable for lower-volume or manual assembly operations. Tray and Bulk packaging options are available from 3M for alternative handling requirements.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher current rating than the original?

A: Yes. All listed substitutes with current ratings equal to or greater than 1A are electrically compatible. Higher current capacity provides design margin and does not affect circuit operation at the original 1A specification.

Q: What is the difference between the 3M 150240-2000-RB and 150240-2020-RB?

A: Both parts are electrically and mechanically identical. The primary difference is packaging: 150240-2000-RB is supplied in Tray, while 150240-2020-RB is supplied in Bulk. The 150240-2020-RB includes board guide features. Selection depends on assembly process requirements and handling preferences.

Q: Are the Samtec MMS and TLE series compatible with the Molex 0791098669?

A: Yes. Both Samtec series maintain the critical 40-position, 0.079" pitch, 2-row configuration with push-pull fastening and gold-plated contacts. The MMS series offers standard receptacle functionality, while the TLE series provides pass-through capability for applications requiring signal routing through the connector.

Q: What is the significance of the operating temperature range difference?

A: The Molex 0791098669 operates from -55°C to 125°C. Substitutes with lower maximum temperature ratings (such as 3M 150240 series at 105°C) are suitable only for applications where the maximum operating temperature does not exceed 105°C. For full temperature range compatibility, select Amphenol ICC, Samtec, or TE Connectivity alternatives rated to 125°C.

Q: Can I mix substitute parts in the same assembly?

A: Yes. All listed substitutes are mechanically and electrically compatible with each other and with the Molex 0791098669. Mixing different manufacturers or series is acceptable from a functional standpoint, though design documentation should reflect the specific part numbers used.

Q: What packaging format is best for automated pick-and-place assembly?

A: Tape & Reel (TR) packaging is optimized for automated assembly equipment. The Molex 0791098669, Amphenol ICC 55510-140TRLF, and Samtec TLE-120-01-G-DV-K-TR are all available in Tape & Reel format with pick-and-place features.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitutes are either RoHS Compliant or ROHS3 Compliant, meeting current environmental regulations. The Molex 0791098669 is ROHS3 compliant, as are the Samtec MMS and TLE series. The 3M and Amphenol ICC parts are RoHS compliant.

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