Molex 0740621021 VHDM 80-Position Backplane Connector Header

Part Overview

The Molex 0740621021 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 is rated for 3A current at 120V across an operating temperature range of -55°C to 105°C. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system support and procurement planning.

Substiute Parts

0740621021

MolexIn Stock: 8420740621021 Datasheet

Current PartRFQ

0740621001

MolexIn Stock: 10190740621001 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Molex 0740621021 is determined by strict equivalence across the following critical parameters:

• Connector type and style: Header, Male Pins with VHDM, Guide Right configuration
• Position count and arrangement: 80 positions in 8 rows × 10 columns
• Pitch specification: 0.079" (2.00mm)
• Mounting and termination: Through-hole with press-fit termination
• Electrical ratings: 3A current, 120V voltage
• Contact material and finish: Gold plating at 30.0µin thickness
• Mechanical features: Shielded design with black color
• Temperature range: -55°C to 105°C operation

The substitute part Molex 0740621001 meets all these criteria, maintaining identical electrical, mechanical, and dimensional specifications while offering improved product status and regulatory compliance.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0740621001 is the direct substitute for the obsolete Molex 0740621021. Both components are functionally and mechanically equivalent across all critical parameters. The 0740621001 offers the following advantages:

• Active product status ensures ongoing availability and manufacturer support
• ROHS3 compliance meets current regulatory requirements for new designs and procurement
• REACH Unaffected status confirms compliance with chemical substance regulations
• Tube packaging provides standardized handling and storage

Selection of the 0740621001 is appropriate for applications requiring the electrical and mechanical specifications of the original 0740621021 while maintaining compliance with current environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Are the 0740621021 and 0740621001 mechanically interchangeable?

A: Yes. Both parts share identical connector type, style, position count, pitch, mounting method, and termination. They are direct mechanical substitutes with no PCB layout or assembly modifications required.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and regulatory compliance. The 0740621021 is obsolete and RoHS non-compliant, while the 0740621001 is active and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Can the 0740621001 be used in applications originally designed for the 0740621021?

A: Yes. The 0740621001 meets all electrical ratings (3A, 120V), temperature specifications (-55°C to 105°C), and mechanical requirements of the original design. No circuit or assembly changes are necessary.

Q: Does packaging differ between these parts?

A: The 0740621021 packaging is not specified in available documentation. The 0740621001 is supplied in tube packaging, which is standard for this connector type and provides protection during handling and storage.

Q: Are there any compliance considerations when switching from 0740621021 to 0740621001?

A: The 0740621001 provides improved compliance status. It is ROHS3 compliant and REACH unaffected, making it suitable for applications subject to current environmental regulations. The original 0740621021 is RoHS non-compliant and should not be used in new designs requiring RoHS certification.

Q: What is the current availability of these parts?

A: The 0740621021 is obsolete with 744 pieces in stock. The 0740621001 is active with 951 pieces in stock, ensuring reliable procurement for ongoing production and support.