Molex 0791090004 Equivalent & Substitute Parts

Part Overview

The Molex 0791090004 is a 10-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 operates across -55°C to 125°C. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Active alternatives from both Molex and Samtec Inc. provide functional equivalence with improved compliance status and availability.

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	Surface Mount
Termination	Solder
Fastening Type	Push-Pull
Contact Finish - Mating	Gold
Operating Temperature	-55°C ~ 125°C
Current Rating	1A
Voltage Rating	125V
Insulation Material	Liquid Crystal Polymer (LCP), Glass Filled
Contact Material	Phosphor Bronze

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: connector type (receptacle), contact type (female socket), number of positions (10), mating pitch (0.079" / 2.00mm), row configuration (2 rows with 0.079" spacing), mounting type (surface mount), termination method (solder), fastening mechanism (push-pull), contact material (phosphor bronze), and operating temperature range (-55°C to 125°C).

The Molex 0791091004 serves as a direct manufacturer equivalent, differing only in product status (active versus obsolete) and post-contact finish (tin versus tin-lead). The Samtec Inc. MMS series connectors (MMS-105-02-F-DV variants) meet all core electrical and mechanical parameters while offering enhanced current rating capability (3.9A per contact versus 1A) and active product status. Packaging and feature variations (board lock, pick and place, board guide) do not affect core substitution eligibility but address specific assembly and application requirements.

Parameter Comparison

Parameter	Molex 0791090004	Molex 0791091004	Samtec MMS-105-02-F-DV	Samtec MMS-105-02-F-DV-A	Samtec MMS-105-02-F-DV-K	Samtec MMS-105-02-F-DV-K-TR	Samtec MMS-105-02-F-DV-LC-P	Samtec MMS-105-02-F-DV-LC-P-TR	Samtec MMS-105-02-F-DV-TR
Connector Type	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle	Receptacle
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	10	10	10	10	10	10	10	10	10
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
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	LCP, Glass Filled	LCP, Glass Filled	LCP	LCP	LCP	LCP	LCP	LCP	LCP
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The Molex 0791091004 is the primary direct substitute, offering identical electrical and mechanical specifications with active product status and ROHS3 compliance. This part is recommended for applications requiring minimal design validation and maximum compatibility assurance.

The Samtec MMS-105-02-F-DV series provides functionally equivalent alternatives with enhanced current rating (3.9A per contact) and active availability. Selection within this series depends on packaging and assembly requirements:

MMS-105-02-F-DV: Standard tube packaging for general applications.

MMS-105-02-F-DV-A: Includes board guide feature for improved alignment during assembly.

MMS-105-02-F-DV-K: Incorporates pick-and-place feature for automated assembly processes.

MMS-105-02-F-DV-K-TR: Pick-and-place variant in tape and reel packaging for high-volume production.

MMS-105-02-F-DV-LC-P: Board lock feature with pick-and-place capability in tube packaging.

MMS-105-02-F-DV-LC-P-TR: Board lock and pick-and-place features in tape and reel packaging for automated high-volume applications.

MMS-105-02-F-DV-TR: Standard configuration in tape and reel packaging for production environments.

All Samtec variants maintain ROHS3 compliance and REACH unaffected status. Selection should account for assembly methodology, volume requirements, and specific mechanical feature needs.

Frequently Asked Questions (FAQ)

Q: Can Samtec MMS-105-02-F-DV series connectors directly replace the Molex 0791090004?

A: Yes. All MMS-105-02-F-DV variants meet the core electrical and mechanical substitution criteria: 10-position receptacle configuration, 0.079" (2.00mm) pitch, 2-row layout with identical row spacing, surface mount solder termination, push-pull fastening, gold-plated mating contacts, phosphor bronze contact material, and -55°C to 125°C operating temperature range. Packaging and feature variations do not affect core compatibility.

Q: What is the difference between Molex 0791091004 and the Samtec MMS series?

A: The Molex 0791091004 is a direct Molex equivalent with identical specifications to the obsolete 0791090004, differing only in post-contact finish (tin versus tin-lead) and active product status. Samtec MMS-105-02-F-DV variants offer the same core functionality with higher current rating per contact (3.9A versus 1A) and optional mechanical features (board lock, pick-and-place, board guide). Both are ROHS3 compliant and actively produced.

Q: How do packaging options affect substitution?

A: Packaging (tube, tape and reel, bulk) affects supply chain logistics and assembly automation compatibility but does not alter electrical or mechanical substitution eligibility. Tape and reel packaging (TR designation) is required for automated pick-and-place assembly. Tube packaging suits manual or semi-automated processes. Bulk packaging is used for specific inventory management scenarios. Select packaging based on production volume and assembly methodology, not connector functionality.

Q: Are there current rating differences between the main part and substitutes?

A: Yes. The Molex 0791090004 and 0791091004 are rated at 1A per contact. Samtec MMS-105-02-F-DV variants are rated at 3.9A per contact. This higher rating in Samtec parts provides additional design margin and is not a limitation for applications designed for 1A operation. Applications requiring higher current density benefit from the Samtec specification.

Q: What compliance certifications apply to these connectors?

A: The Molex 0791090004 is RoHS non-compliant. The Molex 0791091004 and all Samtec MMS-105-02-F-DV variants are ROHS3 compliant. All parts are REACH unaffected and carry EAR99 ECCN classification. Moisture sensitivity level is 1 (unlimited) for all variants.

Q: Which substitute part should be selected for high-volume automated assembly?

A: MMS-105-02-F-DV-K-TR or MMS-105-02-F-DV-LC-P-TR are optimized for high-volume automated production. Both include pick-and-place features and tape and reel packaging. The LC-P variant adds board lock functionality for enhanced mechanical retention during assembly and operation.

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