Molex 0761556103 Equivalent & Substitute Parts

Part Overview

The Molex 0761556103 is a 120-position backplane connector header with male pins for through-hole PCB mounting. This connector is part of the Impact 76155 series and features press-fit termination with gold-plated contacts. The part is currently obsolete, making identification of equivalent and substitute components essential for ongoing system support and new design implementations.

Substiute Parts

0761556103

MolexIn Stock: 9570761556103 Datasheet

Current PartRFQ

0761557103

MolexIn Stock: 9500761557103 Datasheet

DirectRFQ

1934311-1

TE Connectivity AMP ConnectorsIn Stock: 16301934311-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Molex 0761556103 is determined by the following critical parameters:

Primary Substitution 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
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant

Direct Equivalent: The Molex 0761557103 is a direct equivalent, differing only in packaging (Tray vs. standard packaging) and product status (Active vs. Obsolete). All electrical and mechanical parameters are identical.

Cross-Manufacturer Substitute: The TE Connectivity 1934311-1 is a manufacturer-recommended substitute from a different supplier. While it maintains the same 120-position configuration, 12x10 row/column layout, through-hole mounting, and press-fit termination, it operates under different electrical specifications (0.075" pitch vs. 0.053", 250V vs. 30V rating, 0.5A current rating) and an extended temperature range (-65°C ~ 90°C vs. -55°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Option): The Molex 0761557103 is the preferred substitute for the obsolete 0761556103. Both parts are functionally identical with matching electrical and mechanical specifications. The 0761557103 is currently in active production status with 843 units in stock, ensuring supply chain continuity. The only difference is packaging format (Tray), which does not affect connector performance or PCB integration.

For Cross-Manufacturer Substitution: The TE Connectivity 1934311-1 is suitable only when the design can accommodate the following parameter differences: increased pitch spacing (0.075" vs. 0.053"), higher voltage rating (250V vs. 30V), and extended operating temperature range (-65°C ~ 90°C vs. -55°C ~ 85°C). This part is recommended when higher electrical performance margins or broader temperature operation is required. Both parts maintain ROHS3 compliance and UL94 V-0 flammability rating.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0761557103 be used as a direct replacement for the 0761556103? A: Yes. The 0761557103 is a direct equivalent with identical electrical and mechanical specifications. The only difference is packaging (Tray format). No design modifications are required.

Q: What are the key differences between the Molex 0761556103 and the TE Connectivity 1934311-1? A: The primary differences are pitch spacing (0.053" vs. 0.075"), voltage rating (30V vs. 250V), current rating (not specified vs. 0.5A), and operating temperature range (-55°C ~ 85°C vs. -65°C ~ 90°C). The TE part is suitable only if the PCB layout can accommodate the larger pitch and the application does not require the original specifications.

Q: Are all substitute parts ROHS3 compliant? A: Yes. Both the Molex 0761557103 and TE Connectivity 1934311-1 are ROHS3 compliant with UL94 V-0 flammability rating, matching the original part.

Q: What is the inventory status for substitute parts? A: The Molex 0761557103 has 843 units in stock (Active status). The TE Connectivity 1934311-1 has 1581 units in stock (Active status). Both are available for immediate procurement.

Q: Does packaging format affect connector performance? A: No. Packaging format (standard, Tray, or Tube) does not affect electrical or mechanical performance. It is a logistics consideration only.

Q: Can the TE Connectivity 1934311-1 be used in applications requiring the original 30V specification? A: Yes. The TE part has a 250V rating, which exceeds the 30V requirement. However, the larger pitch (0.075" vs. 0.053") requires PCB layout verification to ensure compatibility with existing footprints.