Molex 0761450128 Equivalent & Substitute Parts

Part Overview

The Molex 0761450128 is a 180-position backplane connector header with male pins designed for through-hole PCB mounting. This component features press-fit termination, gold-plated contacts, and is part of the Impact 76145 series. The part is currently classified as obsolete, making identification of compatible substitutes essential for ongoing system support and procurement planning. The primary substitute maintains identical electrical and mechanical specifications while offering active product status and improved availability.

Substiute Parts

0761450128

MolexIn Stock: 12130761450128 Datasheet

Current PartRFQ

0761451128

MolexIn Stock: 7950761451128 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0761451128 qualifies as a direct substitute for the 0761450128 based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Connector type, style, and gender remain unchanged (Header, Male Pins, Impact)
• Number of positions and contact layout are identical (180 positions, 60 differential pairs)
• Pitch and row/column configuration match exactly (0.053" / 1.35mm, 18 rows × 10 columns)
• Mounting method and termination type are the same (Through Hole, Press-Fit)
• Contact finish specification is identical (Gold, 30.0µin)
• Electrical ratings are equivalent (30V, -55°C ~ 85°C)
• Compliance certifications are maintained (UL94 V-0, ROHS3, MSL 1)

The primary difference between these parts is product status and packaging: the 0761450128 is obsolete, while the 0761451128 maintains active status with tray packaging.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0761451128 is the appropriate substitute for the obsolete 0761450128. Both parts are manufactured by Molex within the same Impact 76145 series and maintain identical electrical and mechanical specifications across all critical parameters.

Selection of the 0761451128 is supported by:

• Active product status ensuring continued availability and supply chain stability
• Identical compliance certifications (ROHS3, UL94 V-0, MSL 1)
• Matching electrical ratings and operating temperature range
• Identical connector geometry, pitch, and contact configuration
• Equivalent contact finish specification and durability characteristics

The packaging difference (tray for the substitute) does not affect functional compatibility and is a procurement consideration only.

Frequently Asked Questions (FAQ)

Q: Can the 0761451128 be used as a direct replacement for the 0761450128 in existing designs?

A: Yes. The 0761451128 is electrically and mechanically identical to the 0761450128. All connector specifications, electrical ratings, and compliance certifications match exactly. The parts are interchangeable at the component level.

Q: What is the primary reason for substitution?

A: The 0761450128 is classified as obsolete. The 0761451128 maintains active product status within the same series, ensuring long-term availability and supply chain continuity.

Q: Are there differences in contact finish or durability?

A: No. Both parts feature gold-plated contacts with identical finish thickness (30.0µin / 0.76µm) and the same UL94 V-0 flammability rating.

Q: Does the packaging difference affect compatibility?

A: No. The packaging difference (tray for the substitute) is a logistics consideration only and does not affect electrical or mechanical performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0761450128 and 0761451128 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the operating temperature range for both parts?

A: Both parts operate across the identical temperature range of -55°C to 85°C.