Molex 0791091219 Equivalent & Substitute Parts

Part Overview

The Molex 0791091219 is a 40-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 the -55°C to 125°C temperature range. 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 based on matching electrical specifications, mechanical compatibility, and connector topology to ensure direct functional replacement in circuit designs.

Substiute Parts

0791091219

MolexIn Stock: 6750791091219 Datasheet

Current PartRFQ

MMS-120-02-F-DV

Samtec Inc.In Stock: 1052MMS-120-02-F-DV Datasheet

MFR RecommendedRFQ

MMS-120-02-S-DV

Samtec Inc.In Stock: 1031MMS-120-02-S-DV Datasheet

MFR RecommendedRFQ

TLE-120-01-G-DV-A-P

Samtec Inc.In Stock: 1061TLE-120-01-G-DV-A-P Datasheet

MFR RecommendedRFQ

TLE-120-01-G-DV-K-TR

Samtec Inc.In Stock: 1595TLE-120-01-G-DV-K-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 0791091219 are qualified based on the following critical parameters that determine functional interchangeability:

Primary Matching Criteria:

• 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
• Contact material: Phosphor bronze
• Insulation color: Black

Substitute Parts Identified:

1. Samtec MMS-120-02-F-DV and MMS-120-02-S-DV (MMS Series) — Standard board-to-board receptacles with enhanced current rating (3.9A per contact) and liquid crystal polymer insulation material.

2. Samtec TLE-120-01-G-DV-A-P and TLE-120-01-G-DV-K-TR (TLE Series) — Pass-through receptacles with higher current rating (3.2A per contact), gold post finish, and pick-and-place features. Available in tube (A-P) and tape & reel (K-TR) packaging.

All substitute parts maintain the same mating pitch, row configuration, contact geometry, and operating temperature range as the primary part, ensuring mechanical and electrical compatibility in equivalent applications.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are active production components with ROHS3 compliance and MSL 1 rating, meeting the same environmental and regulatory requirements as the primary Molex 0791091219 part.

Samtec MMS Series (MMS-120-02-F-DV, MMS-120-02-S-DV): These connectors provide higher current capacity (3.9A per contact) compared to the Molex part (1A) and utilize liquid crystal polymer insulation for improved mechanical and thermal stability. Both parts are available in tube packaging and are suitable for applications requiring enhanced current handling without pass-through functionality.

Samtec TLE Series (TLE-120-01-G-DV-A-P, TLE-120-01-G-DV-K-TR): These pass-through receptacles offer current rating of 3.2A per contact and include pick-and-place features for automated assembly. The TLE-120-01-G-DV-K-TR variant is supplied in tape & reel packaging, optimizing high-volume production workflows. The TLE-120-01-G-DV-A-P is available in tube packaging. Both variants feature gold post finish and are suitable for applications requiring signal pass-through capability.

Selection between MMS and TLE series depends on application requirements: MMS series for standard board-to-board interconnect, TLE series for pass-through applications or automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Are these substitute parts mechanically compatible with the Molex 0791091219?

A: Yes. All substitute parts maintain identical mating pitch (0.079" / 2.00mm), row configuration (2 rows with 0.079" spacing), and push-pull fastening mechanism. Insulation height varies slightly (0.177" vs. 0.175"), but this difference does not affect mechanical fit or board-level compatibility.

Q: What is the primary difference between MMS and TLE series substitutes?

A: The MMS series provides standard receptacle functionality with higher current capacity (3.9A per contact). The TLE series offers pass-through receptacle design, allowing signal routing through the connector, with slightly lower current rating (3.2A per contact) and includes pick-and-place features for automated assembly.

Q: Can I use these substitutes in high-current applications?

A: The Samtec MMS and TLE series substitutes support higher current ratings (3.2A to 3.9A per contact) compared to the Molex part (1A per contact). Application suitability depends on specific circuit requirements and thermal management considerations.

Q: What packaging options are available?

A: Molex 0791091219 and Samtec MMS series are supplied in tube packaging. Samtec TLE series is available in both tube (TLE-120-01-G-DV-A-P) and tape & reel (TLE-120-01-G-DV-K-TR) packaging for high-volume production.

Q: Are all parts ROHS3 compliant?

A: Yes. The Molex 0791091219 and all listed substitute parts are ROHS3 compliant with MSL 1 (unlimited) moisture sensitivity rating, meeting current environmental and regulatory standards.

Q: What is the difference in insulation material?

A: The Molex part uses thermoplastic glass-filled insulation. Samtec substitutes use liquid crystal polymer (LCP) insulation, which provides superior mechanical strength, thermal stability, and dimensional consistency in high-precision applications.