Molex 0511272005 Rectangular Connector Housing - Equivalent & Substitute Parts

Part Overview

The Molex 0511272005 is a 20-position rectangular connector housing designed for 1.25mm pitch applications. This receptacle housing accommodates female socket contacts and is configured with 2 rows at 0.055" (1.40mm) row spacing. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and procurement continuity. Substitute parts must maintain electrical and mechanical compatibility across pitch, position count, contact type, and mounting configuration.

Substiute Parts

0511272005

MolexIn Stock: 8510511272005 Datasheet

Current PartRFQ

DF13-20DS-1.25C

Hirose Electric Co LtdIn Stock: 3522DF13-20DS-1.25C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0511272005 is determined by strict equivalence across the following critical parameters:

• Connector Type: Receptacle housing only
• Contact Type: Female socket contacts
• Number of Positions: Exactly 20 positions
• Pitch: 0.049" (1.25mm) contact spacing
• Number of Rows: 2-row configuration
• Mounting Type: Free hanging (in-line) orientation
• Contact Termination: Crimp-style termination
• Compliance: ROHS3 compliance and MSL 1 rating

The Hirose Electric DF13-20DS-1.25C meets all substitution criteria. While row spacing differs (0.049" versus 0.055"), this represents a mechanical refinement within the same connector family and does not affect electrical compatibility or contact engagement with mating plugs designed for 1.25mm pitch systems.

Parameter Comparison

Engineering Selection Recommendations

The Hirose Electric DF13-20DS-1.25C is the qualified substitute for the obsolete Molex 0511272005. Both housings maintain ROHS3 compliance and MSL 1 ratings, ensuring regulatory and environmental compatibility. The Hirose part is currently in active production with 3418 units in stock, providing supply continuity for new designs and legacy system support.

The row spacing variation (0.049" versus 0.055") reflects modern connector design standards and does not compromise electrical performance or mechanical mating with standard 1.25mm pitch contact systems. The color difference (beige versus gray) is cosmetic and does not affect functional performance.

Frequently Asked Questions (FAQ)

Q: Can the Hirose DF13-20DS-1.25C directly replace the Molex 0511272005 in existing assemblies?

A: Yes. Both housings accept identical 1.25mm pitch crimp contacts and maintain the same 20-position, 2-row configuration. Mating plugs designed for 1.25mm pitch systems will engage correctly with either housing.

Q: Does the row spacing difference affect contact alignment?

A: No. Row spacing refers to the distance between rows within the housing. Contact pitch (0.049" / 1.25mm) remains identical, ensuring proper alignment with mating connector pins.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant with MSL 1 ratings. No compliance gaps exist between the two housings.

Q: Why is the Molex part listed as obsolete?

A: Molex has discontinued this model. The Hirose DF13-20DS-1.25C represents the current-generation equivalent within the 1.25mm pitch rectangular connector family.

Q: What is the significance of the color difference?

A: Color is a visual identifier only and does not affect electrical or mechanical performance. Selection between gray and beige depends on assembly documentation or design preference.

Q: Are contacts included with either housing?

A: No. Both the Molex 0511272005 and Hirose DF13-20DS-1.25C are supplied as housings only. Crimp contacts must be sourced separately and inserted into the housing.