Molex 0760551623 240-Position Backplane Connector Header Equivalent & Substitute Parts

Part Overview

The Molex 0760551623 is a 240-position backplane connector header designed for through-hole PCB mounting applications. This Impact series connector features male pins with press-fit termination, gold-plated contacts, and is rated for -55°C to 85°C operation at 30V. The part is currently active in production with 619 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit component interchange based on electrical and mechanical compatibility.

Substiute Parts

0760551623

MolexIn Stock: 7000760551623 Datasheet

Current PartRFQ

1934331-1

TE Connectivity AMP ConnectorsIn Stock: 18851934331-1 Datasheet

MFR RecommendedRFQ

1934332-1

TE Connectivity AMP ConnectorsIn Stock: 9311934332-1 Datasheet

MFR RecommendedRFQ

1934334-1

TE Connectivity AMP ConnectorsIn Stock: 11031934334-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute parts identified for the Molex 0760551623 are TE Connectivity AMP Connectors models 1934331-1, 1934332-1, and 1934334-1. These parts share the following critical parameters that establish substitution eligibility:

Matching Parameters:

• Connector Type: Header, Male Pins
• Number of Positions: 240
• Number of Rows: 15
• Number of Columns: 16
• Mounting Type: Through Hole
• Termination: Press-Fit
• Contact Finish: Gold, 30.0µin (0.76µm)
• Color: Black
• Material Flammability: UL94 V-0
• RoHS Status: RoHS Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Differing Parameters:

• Pitch: Substitute parts use 0.075" (1.90mm) versus 0.053" (1.35mm) on the main part
• Operating Temperature: Substitute parts rated -65°C to 90°C versus -55°C to 85°C
• Voltage Rating: Substitute parts rated 250V versus 30V
• Current Rating: Substitute parts rated 0.5A (main part not specified)
• Connector Style: Substitute parts are High Speed versus Impact style

Parameter Comparison

Engineering Selection Recommendations

Substitution of the Molex 0760551623 with TE Connectivity parts 1934331-1, 1934332-1, or 1934334-1 is permissible only when the following conditions are satisfied:

1. PCB layout accommodates the larger 0.075" (1.90mm) pitch of substitute parts, as this differs from the original 0.053" (1.35mm) pitch. This is a critical mechanical constraint that requires PCB redesign or verification.

2. The application voltage requirement does not exceed 30V. Substitute parts are rated for 250V, providing margin above the original specification.

3. The application temperature range falls within -55°C to 85°C. Substitute parts extend the upper limit to 90°C and lower limit to -65°C, both acceptable for the original specification range.

4. All parts maintain UL94 V-0 flammability rating and RoHS compliance, satisfying regulatory requirements.

5. TE Connectivity parts 1934331-1, 1934332-1, and 1934334-1 are functionally equivalent in terms of connector type, position count, row/column configuration, mounting method, termination style, contact finish, and color.

Frequently Asked Questions (FAQ)

Q: Can the TE Connectivity substitute parts be used as direct drop-in replacements?

A: No. The substitute parts use a 0.075" (1.90mm) pitch compared to the original 0.053" (1.35mm) pitch. This dimensional difference requires PCB layout verification or redesign. The connector footprint and hole spacing will not align with designs created for the Molex 0760551623.

Q: What are the key electrical differences between the main part and substitutes?

A: The substitute parts are rated for 250V and 0.5A per contact, while the Molex part is rated for 30V with unspecified current. Both operate within acceptable voltage margins for applications designed for 30V. The higher voltage rating of substitutes provides additional safety margin.

Q: Are there compliance or certification differences?

A: All parts maintain UL94 V-0 flammability rating and RoHS compliance. The Molex part specifies ROHS3 compliance, while TE parts specify RoHS compliance. Both satisfy regulatory requirements for the stated application categories.

Q: How do the operating temperature ranges compare?

A: The Molex part operates from -55°C to 85°C. TE Connectivity substitutes operate from -65°C to 90°C, extending both the lower and upper temperature limits. Applications within the original -55°C to 85°C range are fully supported by substitute parts.

Q: What is the difference between the three TE Connectivity substitute models?

A: Parts 1934331-1, 1934332-1, and 1934334-1 are electrically and mechanically identical. They differ only in base product number designation and inventory availability (1854, 859, and 1004 units respectively). Selection among these three should be based on procurement lead time and inventory requirements.

Q: Does packaging differ between the main part and substitutes?

A: Yes. The Molex 0760551623 is supplied in Tray packaging, while all TE Connectivity substitutes are supplied in Tube packaging. This affects handling, storage, and integration into assembly processes but does not impact electrical or mechanical performance.