Molex 0740612521 VHDM 200-Position Backplane Connector Header

Part Overview

The Molex 0740612521 is a 200-position VHDM backplane connector header designed for through-hole PCB mounting applications. This component features male pins with shielded construction, gold-plated contacts, and a guide-left configuration. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations. Substitute parts must maintain identical electrical and mechanical specifications to ensure direct compatibility in existing and new applications.

Substiute Parts

0740612521

MolexIn Stock: 7650740612521 Datasheet

Current PartRFQ

0740612501

MolexIn Stock: 8530740612501 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Molex 0740612521 is determined by strict equivalence across all critical electrical and mechanical parameters. The following parameters must remain identical for a part to qualify as a direct substitute:

• Connector type and style (Header, Male Pins; VHDM, Guide Left)
• Position count and arrangement (200 positions; 8 rows × 25 columns)
• Pitch specification (0.079" / 2.00mm)
• Mounting and termination method (Through Hole; Press-Fit)
• Shielding configuration
• Contact material and finish specifications (Gold, 30.0µin thickness)
• Electrical ratings (3A current; 120V voltage)
• Compliance certifications (UL94 V-0; RoHS non-compliant status)

The Molex 0740612501 meets all these criteria and qualifies as a direct substitute. The primary distinction between these parts is product status and packaging configuration.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0740612501 is the direct substitute for the obsolete Molex 0740612521. Both parts are manufactured to identical electrical and mechanical specifications within the VHDM 74061 series. The 0740612501 maintains active product status, ensuring continued availability and supply chain reliability. Both parts carry identical compliance certifications: UL94 V-0 flammability rating and RoHS non-compliant status. The 0740612501 is supplied in tube packaging, which may differ from the original part's packaging configuration but does not affect functional compatibility. Selection of the 0740612501 is appropriate for replacement applications, new designs, and inventory replenishment where the VHDM 200-position header specification is required.

Frequently Asked Questions (FAQ)

Q: Are the 0740612521 and 0740612501 electrically and mechanically interchangeable?

A: Yes. Both parts are identical in connector type, position count, pitch, mounting method, contact specifications, and electrical ratings. They are direct substitutes within the VHDM 74061 series.

Q: Why is the 0740612521 classified as obsolete?

A: The 0740612521 has been superseded by the 0740612501. The newer part number maintains all functional specifications while offering active product status and improved supply availability.

Q: Does packaging differ between these parts?

A: The 0740612501 is supplied in tube packaging. The original 0740612521 packaging specification was not provided. Packaging differences do not affect connector functionality or PCB compatibility.

Q: Are both parts RoHS compliant?

A: No. Both the 0740612521 and 0740612501 are RoHS non-compliant. If RoHS compliance is required for your application, alternative connector solutions must be evaluated.

Q: What is the moisture sensitivity level for these connectors?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Can the 0740612501 be used as a direct replacement in existing assemblies designed for the 0740612521?

A: Yes. The 0740612501 is a direct functional replacement. No design modifications or PCB layout changes are required.