Molex 0761550638 192-Position Impact Backplane Connector Header

Part Overview

The Molex 0761550638 is a 192-position connector header with male pins designed for through-hole PCB mounting in the Impact 76155 series. This component features a 12×16 matrix configuration with 0.053" (1.35mm) pitch and gold-plated contacts rated for 30V operation across -55°C to 85°C. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain design continuity and ensure supply chain availability.

Substiute Parts

0761550638

MolexIn Stock: 11930761550638 Datasheet

Current PartRFQ

0761551638

MolexIn Stock: 10340761551638 Datasheet

DirectRFQ

1934315-1

TE Connectivity AMP ConnectorsIn Stock: 10701934315-1 Datasheet

MFR RecommendedRFQ

1934316-1

TE Connectivity AMP ConnectorsIn Stock: 11281934316-1 Datasheet

MFR RecommendedRFQ

1934317-1

TE Connectivity AMP ConnectorsIn Stock: 11891934317-1 Datasheet

MFR RecommendedRFQ

1934318-1

TE Connectivity AMP ConnectorsIn Stock: 23051934318-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of Positions: 192 (fixed requirement)
• Matrix Configuration: 12 Rows × 16 Columns (fixed requirement)
• Connector Type: Header, Male Pins (fixed requirement)
• Mounting Type: Through Hole (fixed requirement)
• Termination: Press-Fit (fixed requirement)
• Contact Finish: Gold (fixed requirement)
• Material Flammability: UL94 V-0 (fixed requirement)
• RoHS Compliance: ROHS3 or equivalent (fixed requirement)

Variable Parameters Affecting Substitution:

• Pitch: 0.053" (1.35mm) for Molex Impact series; 0.075" (1.90mm) for TE Connectivity Z-PACK TinMan series
• Voltage Rating: 30V (Molex); 250V (TE Connectivity)
• Operating Temperature: -55°C to 85°C (Molex); -65°C to 90°C (TE Connectivity)
• Current Rating: Not specified (Molex); 0.5A (TE Connectivity)
• Connector Style: Impact (Molex); High Speed (TE Connectivity)

Substitutes are grouped into two categories: direct series equivalents (same pitch and electrical characteristics) and cross-manufacturer alternatives (different pitch and enhanced electrical ratings).

Parameter Comparison

Engineering Selection Recommendations

Direct Series Equivalent (Recommended for Pin-Compatible Replacement):

The Molex 0761551638 is the primary substitute for the obsolete 0761550638. Both components share identical electrical and mechanical specifications within the Impact 76155 series, including pitch (0.053"), voltage rating (30V), and operating temperature range (-55°C to 85°C). The 0761551638 maintains active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. This part requires no PCB redesign and provides direct functional equivalence.

Cross-Manufacturer Alternatives (TE Connectivity Z-PACK TinMan Series):

The TE Connectivity parts 1934315-1, 1934316-1, 1934317-1, and 1934318-1 are functionally equivalent but operate at a larger pitch (0.075" vs. 0.053"), higher voltage rating (250V vs. 30V), and extended temperature range (-65°C to 90°C vs. -55°C to 85°C). These substitutes are suitable only when PCB layout can accommodate the increased pitch spacing. All four TE Connectivity variants maintain active product status and RoHS compliance. Selection among these four parts is determined by packaging requirements: 1934315-1 and 1934317-1 are supplied in Tube packaging, while 1934316-1 is supplied in Bulk packaging, and 1934318-1 is supplied in Tube packaging with the highest inventory availability (2240 units).

Frequently Asked Questions (FAQ)

Q: Can I use the TE Connectivity 1934315-1 as a direct replacement for the Molex 0761550638 without PCB modification?

A: No. The TE Connectivity part operates at 0.075" (1.90mm) pitch compared to the Molex 0.053" (1.35mm) pitch. PCB footprint redesign is required. The Molex 0761551638 is the recommended direct replacement requiring no PCB changes.

Q: What is the primary difference between the Molex 0761550638 and 0761551638?

A: Both parts are electrically and mechanically identical within the Impact 76155 series. The primary difference is product status: 0761550638 is obsolete, while 0761551638 is active. Packaging differs (0761551638 is supplied in Tray format).

Q: Are all TE Connectivity Z-PACK TinMan substitutes (1934315-1, 1934316-1, 1934317-1, 1934318-1) interchangeable?

A: These four parts are electrically and mechanically identical. Differences exist only in packaging format and inventory availability. Selection is based on procurement and logistics requirements, not functional compatibility.

Q: Does the higher voltage rating (250V) of TE Connectivity parts provide any advantage over the Molex 30V rating?

A: The higher voltage rating provides additional design margin for applications operating below 30V. However, this advantage is only realized if the larger pitch (0.075") is compatible with the PCB layout. For applications requiring the original 0.053" pitch, the Molex 0761551638 is the appropriate selection.

Q: What is the impact of the extended operating temperature range (-65°C to 90°C) offered by TE Connectivity parts?

A: The TE Connectivity range extends 10°C lower at the minimum and 5°C higher at the maximum compared to the Molex specification (-55°C to 85°C). This extended range is beneficial only for applications requiring operation outside the original Molex temperature envelope and only when pitch compatibility permits substitution.

Q: Are there any compliance or certification differences between the substitute parts?

A: All substitute parts maintain UL94 V-0 flammability rating and RoHS compliance. The Molex 0761551638 and TE Connectivity 1934315-1 and 1934318-1 are ROHS3 compliant. The TE Connectivity 1934316-1 and 1934317-1 are RoHS compliant. All parts are suitable for regulated applications requiring environmental compliance.