Molex 0791098403 Equivalent & Substitute Parts

Part Overview

The Molex 0791098403 is an 8-position receptacle connector with 0.079" (2.00mm) pitch, designed for surface mount applications in board-to-board or cable interconnect configurations. This connector features gold-plated mating contacts, push-pull fastening, and operates across -55°C to 125°C. The part is active in production and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and environmental ratings can be maintained while accommodating different packaging formats, manufacturer availability, or connector style variations.

Key Parameters

Parameter	Value
Connector Type	Receptacle
Number of Positions	8
Pitch - Mating	0.079" (2.00mm)
Number of Rows	2
Row Spacing - Mating	0.079" (2.00mm)
Mounting Type	Surface Mount
Contact Type	Female Socket
Contact Finish - Mating	Gold
Fastening Type	Push-Pull
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
Current Rating	1A
Voltage Rating	125V

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0791098403 is determined by strict alignment of the following parameters:

8-position configuration with 0.079" (2.00mm) pitch and 2-row layout
Surface mount termination with solder connection
Female socket contact type with gold mating finish
Push-pull fastening mechanism
UL94 V-0 flammability rating
Operating temperature range of -55°C to 125°C minimum
Receptacle or header connector style (board-to-board compatible)

The substitute parts listed maintain these core electrical and mechanical parameters. Variations in packaging format (Tape & Reel versus Tube), current/voltage ratings above the minimum requirement, and connector series designation do not preclude substitution when the above criteria are met.

Parameter Comparison

Parameter	Molex 0791098403	Amphenol ICC 55510-108LF	Amphenol ICC 55510-108TRLF	Sullins NPPN042FFKP-RC	Sullins NPPN042FFKS-RC
Manufacturer	Molex	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Sullins Connector Solutions	Sullins Connector Solutions
Number of Positions	8	8	8	8	8
Pitch - Mating	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
Row Spacing - Mating	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
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 105°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
Current Rating (Amps)	1A	2A	2A	2A	2A
Voltage Rating	125V	200V	200V	Not specified	Not specified
Connector Type	Receptacle	Receptacle	Receptacle	Header	Header
Packaging	Tape & Reel (TR)	Tube	Tape & Reel (TR)	Tube	Tube
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts maintain active product status and meet or exceed the electrical and mechanical requirements of the Molex 0791098403. Selection among substitutes should be based on the following factors:

Amphenol ICC 55510-108TRLF is the preferred substitute when Tape & Reel packaging is required for automated assembly processes. This part matches the original packaging format and provides higher current (2A) and voltage (200V) ratings with RoHS compliance.

Amphenol ICC 55510-108LF is suitable for applications where Tube packaging is acceptable. It provides identical electrical performance to the 55510-108TRLF variant with equivalent compliance certifications.

Sullins NPPN042FFKP-RC and NPPN042FFKS-RC are header-style alternatives that maintain the same pitch, row configuration, and contact geometry. These parts are ROHS3 compliant and feature gold post finishes. Note that the operating temperature range is reduced to -40°C to 105°C, which may limit use in extreme cold environments. These options are suitable for general purpose and industrial applications where the narrower temperature range is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 55510-108TRLF directly replace the Molex 0791098403 in automated pick-and-place assembly?

A: Yes. Both parts feature identical 0.079" (2.00mm) pitch, 8-position, 2-row configuration, and surface mount termination. The 55510-108TRLF is supplied in Tape & Reel format with Pick and Place features, making it suitable for automated assembly lines.

Q: What is the difference between the Amphenol ICC 55510-108LF and 55510-108TRLF?

A: The primary difference is packaging format. The 55510-108LF is supplied in Tube packaging, while the 55510-108TRLF is supplied in Tape & Reel (TR) format. Electrical specifications, connector type, and performance characteristics are identical.

Q: Are the Sullins NPPN042FFKP-RC and NPPN042FFKS-RC suitable for automotive applications?

A: The Sullins parts are header-style connectors with an operating temperature range of -40°C to 105°C. The original Molex 0791098403 is rated for -55°C to 125°C and is specified for automotive applications. The Sullins alternatives may not meet automotive temperature extremes and should be evaluated against specific application requirements.

Q: What is the difference between a receptacle and header connector in this context?

A: The Molex 0791098403 and Amphenol ICC parts are receptacles (female sockets). The Sullins NPPN042FFKP-RC and NPPN042FFKS-RC are headers (male pins). Both connector styles are compatible for board-to-board mating when paired with appropriate complementary connectors. Mechanical footprint and PCB layout compatibility must be verified.

Q: Do all substitute parts meet RoHS compliance?

A: Yes. The Molex 0791098403 is ROHS3 compliant. The Amphenol ICC parts are RoHS compliant. The Sullins parts are ROHS3 compliant. All parts meet or exceed RoHS requirements.

Q: Can I use a substitute part with a higher current rating (2A) in place of the 1A-rated original?

A: Yes. The substitute parts with 2A current ratings are rated for higher current capacity than the original 1A specification. This provides additional design margin and does not create compatibility issues. The actual current draw of the application determines whether the higher rating is necessary.

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