Molex 0791098419 Equivalent & Substitute Parts

Part Overview

The Molex 0791098419 is a 40-position receptacle connector with 0.079" (2.00mm) pitch, designed for surface mount applications in board-to-board and 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 with 1055 units in current inventory. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where electrical and mechanical parameters align with the original specification.

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
Operating Temperature	-55°C ~ 125°C
Current Rating	1A
Voltage Rating	125V
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment of the following critical parameters:

Connector geometry: 40 positions, 0.079" (2.00mm) pitch, 2-row configuration, 0.079" row spacing
Electrical interface: Receptacle with female socket contacts, solder termination, push-pull fastening
Physical mounting: Surface mount configuration
Environmental compliance: UL94 V-0 flammability rating, MSL 1 (Unlimited), RoHS compliance

Substitute parts are grouped into two categories:

Category A - Direct Functional Equivalents: Parts meeting all core parameters with minor variations in contact finish thickness, insulation material, or operating temperature range within acceptable limits.

Category B - Conditional Substitutes: Parts with equivalent mechanical and electrical interfaces but differing in connector subtype (pass-through receptacle), contact material composition, or packaging format. These require design verification for specific applications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Connector Type	Positions	Pitch (mm)	Rows	Mounting	Contact Finish - Mating	Operating Temp (°C)	Current Rating	Voltage Rating	Packaging	RoHS Status
0791098419	Molex	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 125	1A	125V	Tape & Reel	ROHS3
150240-2000-RB	3M	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 105	1A	500VDC	Tray	RoHS
150240-2020-RB	3M	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 105	1A	500VDC	Bulk	RoHS
55510-140LF	Amphenol ICC (FCI)	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 125	2A	200V	Tube	RoHS
55510-140TRLF	Amphenol ICC (FCI)	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 125	2A	200V	Tape & Reel	RoHS
9-1734516-0	TE Connectivity AMP Connectors	Receptacle	40	2.00	2	Surface Mount	Gold	-40 ~ 105	1A	250VAC	Cut Tape	RoHS
MMS-120-02-F-DV	Samtec Inc.	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 125	3.9A per Contact	—	Tube	ROHS3
MMS-120-02-S-DV	Samtec Inc.	Receptacle	40	2.00	2	Surface Mount	Gold	-55 ~ 125	3.9A per Contact	—	Tube	ROHS3
NPPN202FFKS-RC	Sullins Connector Solutions	Header	40	2.00	2	Surface Mount	Gold	-40 ~ 105	2A	—	Tube	ROHS3
TLE-120-01-G-DV-A-P	Samtec Inc.	Receptacle, Pass Through	40	2.00	2	Surface Mount	Gold	-55 ~ 125	3.2A per Contact	—	Tube	ROHS3
TLE-120-01-G-DV-K-TR	Samtec Inc.	Receptacle, Pass Through	40	2.00	2	Surface Mount	Gold	-55 ~ 125	3.2A per Contact	—	Tape & Reel	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Category A)

The 55510-140TRLF (Amphenol ICC) and 55510-140LF (Amphenol ICC) are functionally equivalent to the Molex 0791098419 across all core mechanical and electrical parameters. Both maintain the 40-position, 2.00mm pitch receptacle configuration with surface mount solder termination and push-pull fastening. The 55510-140TRLF is packaged in Tape & Reel format, matching the original part's packaging preference for automated assembly. Both parts are RoHS compliant and rated for -55°C to 125°C operation. The Amphenol ICC parts support higher current ratings (2A versus 1A) and are suitable for applications requiring equivalent or reduced electrical stress.

The MMS-120-02-F-DV and MMS-120-02-S-DV (Samtec Inc.) provide equivalent mechanical interfaces with enhanced current capacity (3.9A per contact) and maintain ROHS3 compliance and -55°C to 125°C operating range. These parts are suitable for designs requiring higher current density or future design margin.

Conditional Substitutes (Category B)

The TLE-120-01-G-DV-K-TR and TLE-120-01-G-DV-A-P (Samtec Inc.) are pass-through receptacle variants with identical pitch, position count, and row configuration. These parts support higher current ratings (3.2A per contact) and are ROHS3 compliant with -55°C to 125°C operation. Pass-through design enables signal routing on both sides of the connector, requiring design verification for mechanical clearance and signal integrity in the target application.

The 9-1734516-0 (TE Connectivity) maintains core geometric and electrical compatibility but operates within a narrower temperature range (-40°C to 105°C) and supports 250VAC rating. This part is suitable for applications not requiring the full -55°C lower temperature limit.

The 150240-2000-RB and 150240-2020-RB (3M) are receptacle equivalents with identical position and pitch specifications but operate within -55°C to 105°C range. These parts support higher voltage ratings (500VDC) and are suitable for applications requiring elevated voltage performance.

The NPPN202FFKS-RC (Sullins Connector Solutions) is a header connector variant with identical pitch and position count. Header configuration requires design verification for mating interface compatibility, as headers are typically paired with receptacle connectors rather than serving as direct receptacle substitutes.

Compliance and Certification

All substitute parts maintain UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity level, ensuring compatibility with standard PCB assembly and storage protocols. RoHS and ROHS3 compliance is confirmed across all alternatives, supporting regulatory requirements for restricted substance elimination.

Frequently Asked Questions (FAQ)

Q: Can the 55510-140TRLF directly replace the Molex 0791098419 in production?

A: Yes. The 55510-140TRLF maintains identical mechanical pitch (2.00mm), position count (40), row configuration (2), and surface mount solder termination. Both parts feature gold-plated mating contacts, push-pull fastening, and UL94 V-0 flammability rating. The Amphenol ICC part is packaged in Tape & Reel format, matching the original specification for automated assembly. Electrical ratings are compatible, with the Amphenol part supporting higher current capacity (2A versus 1A).

Q: What is the difference between receptacle and pass-through connector variants?

A: Receptacle connectors (0791098419, 55510-140TRLF, MMS-120-02-S-DV) provide a single-sided mating interface for board-to-board or cable connections. Pass-through receptacles (TLE-120-01-G-DV-K-TR, TLE-120-01-G-DV-A-P) enable signal routing through the connector body, allowing simultaneous mating on both sides. Pass-through variants require design verification for mechanical clearance and signal path routing in the target application.

Q: Are the 3M 150240 series parts suitable substitutes?

A: The 150240-2000-RB and 150240-2020-RB maintain identical pitch, position count, and row spacing. Both are RoHS compliant receptacles with gold-plated contacts and push-pull fastening. The primary difference is operating temperature range (-55°C to 105°C versus -55°C to 125°C for the Molex part). These 3M parts are suitable for applications not requiring operation above 105°C. Voltage rating is higher (500VDC), providing additional design margin for high-voltage applications.

Q: What packaging options are available for equivalent parts?

A: Substitute parts are available in multiple packaging formats: Tape & Reel (55510-140TRLF, TLE-120-01-G-DV-K-TR) for automated pick-and-place assembly; Tube (55510-140LF, MMS-120-02-F-DV, MMS-120-02-S-DV, TLE-120-01-G-DV-A-P, NPPN202FFKS-RC) for manual or semi-automated handling; Tray (150240-2000-RB) and Bulk (150240-2020-RB) for high-volume applications. Packaging selection depends on assembly process requirements and inventory management protocols.

Q: Do all substitute parts meet the same compliance standards?

A: All substitute parts are RoHS or ROHS3 compliant and maintain UL94 V-0 flammability rating. Moisture sensitivity level is MSL 1 (Unlimited) across all alternatives, ensuring compatibility with standard PCB assembly and storage conditions. REACH compliance status varies by manufacturer; specific REACH documentation should be obtained from the supplier for applications requiring full regulatory traceability.

Q: Can the Samtec MMS and TLE series parts support higher current applications?

A: Yes. The MMS-120-02-F-DV and MMS-120-02-S-DV support 3.9A per contact, while the TLE-120-01-G-DV-K-TR and TLE-120-01-G-DV-A-P support 3.2A per contact, compared to 1A for the Molex 0791098419. These higher current ratings provide design margin for applications requiring increased power delivery or future design scaling. Both series maintain -55°C to 125°C operating range and ROHS3 compliance.

Q: Is the Sullins NPPN202FFKS-RC header connector a direct substitute?

A: The NPPN202FFKS-RC is a header connector with identical pitch and position count but different connector type. Headers are designed to mate with receptacle connectors, not to serve as receptacle substitutes. This part is suitable only for applications where a header interface is required in place of a receptacle. Design verification is necessary to confirm mating interface compatibility.

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