Molex 0761552103 Equivalent & Substitute Parts

Part Overview

The Molex 0761552103 is a 120-position backplane connector header with male pins for through-hole PCB mounting. This connector features an Impact style design with guide left orientation, 12 rows by 10 columns configuration, and 0.053" (1.35mm) pitch spacing. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

0761552103

MolexIn Stock: 8000761552103 Datasheet

Current PartRFQ

0761553103

MolexIn Stock: 7880761553103 Datasheet

DirectRFQ

1934311-1

TE Connectivity AMP ConnectorsIn Stock: 16301934311-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Molex 0761552103 are identified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Number of Positions: 120
• Connector Type: Header, Male Pins
• Mounting Type: Through Hole
• Termination: Press-Fit
• Number of Rows: 12
• Number of Columns: 10
• Contact Finish: Gold
• Color: Black
• RoHS Status: ROHS3 Compliant

Substitute Categories:

1. Direct Equivalent (Molex 0761553103): Identical electrical and mechanical specifications with active product status and improved packaging (Tray).

2. Cross-Manufacturer Substitute (TE Connectivity 1934311-1): Functionally compatible with 120 positions, through-hole mounting, and press-fit termination. Differences in pitch (0.075" vs 0.053"), connector style (High Speed vs Impact), operating temperature range, and voltage rating require PCB layout and electrical circuit verification before implementation.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended): Select Molex 0761553103 when sourcing replacements for the obsolete 0761552103. This part maintains identical electrical and mechanical specifications while offering active product status and established supply chain availability. Both parts are ROHS3 compliant with MSL 1 rating.

For Cross-Manufacturer Substitution: TE Connectivity 1934311-1 is functionally compatible for 120-position through-hole applications with press-fit termination. This substitute introduces the following parameter differences that require design verification:

• Pitch spacing increases from 0.053" to 0.075", requiring PCB layout modification
• Connector style changes from Impact to High Speed, affecting mechanical interface
• Voltage rating increases from 30V to 250V (compatible with lower voltage applications)
• Operating temperature range expands to -65°C ~ 90°C (compatible with -55°C ~ 85°C requirement)
• Current rating of 0.5A is specified (main part rating not provided)

Both substitute parts maintain ROHS3 compliance and are actively manufactured.

Frequently Asked Questions (FAQ)

Q: Can Molex 0761553103 be used as a direct drop-in replacement for the obsolete 0761552103?

A: Yes. The 0761553103 maintains identical specifications for number of positions (120), pitch (0.053"), row/column configuration (12x10), mounting type (through-hole), termination (press-fit), contact finish (gold), and operating temperature range (-55°C ~ 85°C). The only difference is packaging format (Tray vs. unspecified) and active product status.

Q: What design changes are required to use TE Connectivity 1934311-1 instead of the Molex connector?

A: The primary design change involves PCB layout modification due to pitch spacing difference (0.075" vs. 0.053"). The connector footprint, via placement, and trace routing must be redesigned to accommodate the larger pitch. Mechanical interface verification is required due to the High Speed connector style versus Impact style. Electrical circuit operation remains compatible within the specified voltage and temperature ranges.

Q: Are all three connectors RoHS compliant?

A: Yes. The Molex 0761552103, Molex 0761553103, and TE Connectivity 1934311-1 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level.

Q: What is the difference between Impact and High Speed connector styles?

A: The connector style designation reflects mechanical design and performance characteristics. Impact style (Molex) and High Speed style (TE Connectivity) are different mechanical implementations. The High Speed connector offers expanded voltage rating (250V vs. 30V) and current rating (0.5A specified). Mechanical compatibility requires design verification before substitution.

Q: Which substitute part should be selected for new designs?

A: For new designs requiring 120-position through-hole connectors with 0.053" pitch, select Molex 0761553103 to maintain the original design specifications. For applications where pitch spacing can be modified to 0.075", TE Connectivity 1934311-1 offers expanded electrical ratings and active manufacturing status.