Molex 0791091211 Equivalent & Substitute Parts

Part Overview

The Molex 0791091211 is a 24-position receptacle connector with 0.079" (2.00mm) pitch, designed for surface mount applications in board-to-board and cable interconnect scenarios. 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, making it suitable for automotive, general purpose, and telecommunications applications. Equivalent and substitute parts are identified when design requirements, supply constraints, or application-specific needs necessitate alternative connector solutions that maintain electrical and mechanical compatibility.

Substiute Parts

0791091211

MolexIn Stock: 11140791091211 Datasheet

Current PartRFQ

55510-124LF

Amphenol ICC (FCI)In Stock: 158855510-124LF Datasheet

MFR RecommendedRFQ

TLE-112-01-G-DV-A-K-TR

Samtec Inc.In Stock: 3492TLE-112-01-G-DV-A-K-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 0791091211 are qualified based on the following critical parameters that determine functional and mechanical compatibility:

• Connector Type & Contact Configuration: Receptacle with female socket contacts
• Position Count & Pitch: 24 positions at 0.079" (2.00mm) mating pitch
• Row Configuration: 2 rows with 0.079" (2.00mm) row spacing
• Mounting & Termination: Surface mount with solder termination
• Fastening Mechanism: Push-pull fastening system
• Contact Finish: Gold-plated mating surface
• Operating Temperature Range: -55°C to 125°C minimum
• Electrical Performance: Minimum 1A current rating and 125V voltage rating

The two substitute parts listed below meet these core compatibility criteria while offering variations in series design, contact current capacity, and material specifications.

Parameter Comparison

Engineering Selection Recommendations

Amphenol ICC 55510-124LF (Minitek® 2.00mm Series)

This substitute provides enhanced electrical performance with 2A current rating and 200V voltage rating, exceeding the original part specifications. The connector maintains identical mechanical pitch, row configuration, and surface mount termination. RoHS compliance is confirmed. The Minitek series offers increased design margin for applications requiring higher current capacity or voltage tolerance. Insulation material differs (plastic vs. glass-filled thermoplastic), which may affect mechanical robustness in high-vibration environments.

Samtec TLE-112-01-G-DV-A-K-TR (TLE Series)

This substitute features the highest current rating at 3.2A per contact and includes pass-through connector capability, enabling daisy-chain or multi-stage interconnect configurations. ROHS3 compliance matches the original part. The TLE series uses Liquid Crystal Polymer (LCP) insulation, providing superior thermal and mechanical performance. Packaging in tape and reel format supports automated assembly. This option is suitable for applications requiring enhanced current distribution or modular connector stacking.

Both substitutes maintain active production status and meet the core mechanical and electrical compatibility requirements of the Molex 0791091211.

Frequently Asked Questions (FAQ)

Q: Can the Amphenol ICC 55510-124LF be used as a direct replacement for the Molex 0791091211?

A: Yes, within the constraints of your application's electrical requirements. Both connectors share identical 24-position, 0.079" pitch, 2-row configuration with push-pull fastening and surface mount solder termination. The Amphenol part provides higher current (2A vs. 1A) and voltage (200V vs. 125V) ratings. Verify that your PCB layout accommodates the Minitek series insulation height of 0.177" (4.50mm) versus the original 0.175" (4.45mm).

Q: What is the difference between the Samtec TLE-112-01-G-DV-A-K-TR and the original Molex connector?

A: The Samtec TLE series offers pass-through connector functionality, allowing multiple connectors to be stacked or daisy-chained. Current rating is significantly higher at 3.2A per contact. The TLE uses Liquid Crystal Polymer insulation instead of glass-filled thermoplastic. Packaging is tape and reel format, optimized for pick-and-place assembly. Mechanical pitch and row spacing remain identical.

Q: Are all three connectors RoHS compliant?

A: Yes. The Molex 0791091211 and Samtec TLE-112-01-G-DV-A-K-TR are ROHS3 compliant. The Amphenol ICC 55510-124LF is RoHS compliant. All three meet regulatory requirements for lead-free solder applications.

Q: What is the impact of different insulation materials on connector performance?

A: Insulation material affects mechanical durability, thermal stability, and environmental resistance. Glass-filled thermoplastic (Molex) provides good mechanical strength. Plastic (Amphenol) offers standard performance. Liquid Crystal Polymer (Samtec) provides superior thermal performance and dimensional stability, particularly in high-temperature or high-vibration applications.

Q: Can I use these connectors interchangeably on the same PCB?

A: No. While all three connectors share identical pitch and row spacing, insulation heights vary slightly (0.175" to 0.177"), and mating contact geometry may differ between series. PCB footprints must be validated for each specific connector series before substitution.

Q: Which substitute offers the best performance for high-current applications?

A: The Samtec TLE-112-01-G-DV-A-K-TR provides the highest current capacity at 3.2A per contact, combined with superior insulation material (LCP) for thermal management. Select this option for applications requiring maximum current distribution or operating in elevated temperature environments.