Molex 0761550108 Equivalent & Substitute Parts

Part Overview

The Molex 0761550108 is a 120-position backplane connector header with male pins for through-hole PCB mounting. This component features press-fit termination, gold-plated contacts, and is designed for high-density interconnect applications with 40 differential pairs. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

0761550108

MolexIn Stock: 7400761550108 Datasheet

Current PartRFQ

0761551108

MolexIn Stock: 12250761551108 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 0761550108 are identified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Number of positions: 120
• Connector type: Header, Male Pins
• Mounting type: Through Hole
• Termination method: Press-Fit
• Contact finish: Gold
• Material flammability: UL94 V-0
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

Secondary Considerations:

• Pitch tolerance (0.053" primary, with allowance for compatible alternatives)
• Row and column configuration (12 rows × 10 columns)
• Operating temperature range compatibility
• Voltage rating adequacy

The substitute parts listed maintain compatibility with the original design specifications while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

Molex 0761551108 (Recommended Direct Substitute)

The Molex 0761551108 is the primary equivalent for the obsolete 0761550108. This part maintains identical electrical and mechanical specifications, including pitch (0.053"), position count (120), row/column configuration (12×10), and all contact characteristics. Both parts share the same series designation (Impact 76155) and are manufactured by Molex. The 0761551108 is currently in active production status with higher inventory availability (1132 pcs vs. 694 pcs). Packaging differs (Tray vs. unspecified), but this does not affect functional compatibility. ROHS3 compliance and MSL rating are identical.

TE Connectivity 1934311-1 (Alternative Substitute)

The TE Connectivity 1934311-1 serves as an alternative substitute when Molex parts are unavailable. This part maintains the same 120-position count, 12×10 configuration, and through-hole press-fit mounting. Key differences include a larger pitch (0.075" vs. 0.053"), which requires PCB layout verification for compatibility. The TE part offers enhanced electrical specifications (250V rating vs. 30V, 0.5A current rating) and extended operating temperature range (-65°C to 90°C vs. -55°C to 85°C). Both parts are ROHS3 compliant with MSL 1 rating. The TE part is actively produced and available in higher quantities (1581 pcs).

Selection between these substitutes depends on PCB layout constraints. The Molex 0761551108 is preferred for direct replacement in existing designs. The TE Connectivity 1934311-1 requires PCB redesign due to pitch differences but provides superior electrical performance and temperature range.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0761551108 be used as a direct replacement for the 0761550108?

A: Yes. The 0761551108 is functionally equivalent with identical electrical and mechanical specifications. Both parts feature 120 positions, 0.053" pitch, 12×10 configuration, gold-plated press-fit contacts, and UL94 V-0 flammability rating. The primary difference is product status (active vs. obsolete) and packaging format (Tray vs. unspecified). No design modifications are required.

Q: What are the key differences between the Molex and TE Connectivity alternatives?

A: The primary difference is connector pitch: Molex 0761551108 uses 0.053" (1.35mm) pitch, while TE Connectivity 1934311-1 uses 0.075" (1.90mm) pitch. This pitch difference requires PCB layout verification and potential redesign. The TE part offers higher voltage rating (250V vs. 30V), specified current rating (0.5A), and extended temperature range (-65°C to 90°C vs. -55°C to 85°C). Both maintain identical position count, mounting type, and compliance certifications.

Q: Are there packaging considerations when selecting a substitute?

A: Yes. The Molex 0761551108 is supplied in Tray packaging, while the TE Connectivity 1934311-1 is supplied in Tube packaging. Packaging affects handling, storage, and integration into assembly processes. Verify packaging compatibility with your procurement and manufacturing workflows before finalizing part selection.

Q: Do all substitute parts meet the same compliance requirements?

A: Yes. All listed parts are ROHS3 compliant with UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity level. Voltage and current ratings differ between manufacturers, but all parts meet or exceed the original 30V specification. Verify electrical specifications against your application requirements before implementation.

Q: What should be verified before implementing the TE Connectivity 1934311-1 as a substitute?

A: PCB layout compatibility is critical due to the pitch difference (0.075" vs. 0.053"). Verify that the larger pitch accommodates your existing PCB trace routing and via placement. Confirm that the higher voltage rating (250V) and current rating (0.5A) are compatible with your application. Extended operating temperature range (-65°C to 90°C) may provide additional design margin but should be validated against system thermal requirements.