Molex 0740611021 VHDM 80-Position Backplane Connector Header

Part Overview

The Molex 0740611021 is an 80-position VHDM backplane connector header designed for through-hole PCB mounting applications. This component features male pins with shielding, gold-plated contacts, and a guide-left configuration. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The primary substitute maintains identical electrical and mechanical specifications while offering active product status and improved compliance certifications.

Substiute Parts

0740611021

MolexIn Stock: 9930740611021 Datasheet

Current PartRFQ

0740611004

MolexIn Stock: 15820740611004 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Molex 0740611004 qualifies as a direct substitute for the 0740611021 based on the following critical parameters:

• Connector Configuration: Identical 80-position VHDM header with guide-left orientation
• Electrical Specifications: Matching 3A current rating and 120V voltage rating
• Mechanical Specifications: Identical pitch (0.079"/2.00mm), row/column configuration (8×10), and through-hole mounting
• Contact Properties: Gold plating with identical thickness (30.0µin/0.76µm)
• Physical Characteristics: Same shielded design, black color, and UL94 V-0 flammability rating
• Termination Method: Press-fit termination identical to the main part

The substitution is based strictly on electrical and mechanical parameter equivalence. The primary distinction is product lifecycle status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0740611004 is the appropriate selection for applications currently using or specifying the 0740611021. The substitute part maintains complete electrical and mechanical equivalence across all critical parameters. The 0740611004 offers the additional advantage of active product status, ensuring long-term availability and supply chain continuity. The part also meets ROHS3 compliance requirements, addressing regulatory requirements for new designs and manufacturing environments with stricter environmental standards. The 0740611021, classified as obsolete, presents supply and support limitations that make the 0740611004 the preferred choice for both new designs and legacy system updates.

Frequently Asked Questions (FAQ)

Q: Are the 0740611021 and 0740611004 mechanically interchangeable?

A: Yes. Both parts feature identical connector geometry, pitch (0.079"/2.00mm), position count (80), row/column configuration (8×10), and through-hole mounting specifications. Direct PCB footprint compatibility is confirmed.

Q: What are the electrical differences between these parts?

A: There are no electrical differences. Both parts carry identical current ratings (3A), voltage ratings (120V), contact finish specifications (gold, 30.0µin/0.76µm), and shielding characteristics.

Q: Why should I use the 0740611004 instead of the 0740611021?

A: The 0740611021 is classified as obsolete, which creates supply chain risk and limits manufacturer support. The 0740611004 maintains identical specifications while offering active product status, ROHS3 compliance, and confirmed availability.

Q: Does the packaging difference affect compatibility?

A: No. The packaging difference (tube for 0740611004 versus unspecified for 0740611021) affects only logistics and storage. The connector itself is identical. Packaging selection depends on procurement volume and handling requirements.

Q: Are there any compliance differences I should consider?

A: The 0740611004 is ROHS3 compliant, while the 0740611021 is RoHS non-compliant. For applications subject to environmental regulations or customer requirements mandating RoHS compliance, the 0740611004 is the required choice.

Q: Can I use the 0740611004 in existing designs specified for the 0740611021?

A: Yes. The electrical, mechanical, and physical specifications are identical. The 0740611004 is a direct substitute requiring no design modifications.